Clecotech.com

Why should we use Frontend with backend language?

2019-09-16T16:04:00.002+05:30

If you have a plan to make a web application having rich in functionality.
Then, Instead of using single language i.e. Ruby on Rails, Python Or Node. I would rather suggest you to make backend in any language i.e. Ruby on Rails, Python or Node.

and for the front you can use any reliable front-end language i.e. React (developed by Facebook) or Angular.js (developed by Google)

Using front-end we will get advantages as below.

Fast: The application will be faster as backend will provide the JSON to the front-end. and for any updates certain part of the UI will be reloaded with limited data fetch only. As front-end will not request un-necessary data from Backend.

Smooth: Any front-end provides multiple animation effects. Where developer don't have to much care about that. When whole code don't reload it seems website is running much faster and smooth too.

Handling is Good: From developers prospective, Code handling is far better we write moduler code and provide only JSON response to the Front end.

Easy to make Mobile application: When a Front-end language is used. Backend has API ready as JSON Response, so Half work of the Mobile API is already done. Now, if the same API is used for the Mobile version of the Application, It will work flawlessly.

In short, Using front-end is very good if you have medium to big software application to be developed. But, for very small softwares i.e. One page SPA, It is not relevant to use front-end.

In ClecoTech International, We develop Small, medium and large level applications too. If you want to get the guidance regarding your application which language(s) you should prefer or which will be best technology stack for your application, feel free to write about that in comment section. Or feel free to send a mail on mail(at)manishshrivastava.com or manish(at)clecotech.com.

Cheers,
Happy Coding!

Make Social Network Site in Diaspora

2019-05-09T17:57:00.003+05:30

Today, My partner Ashish informed about diaspora this is a great tool to make a social networking website.

So many things should have already done over here for basic social networking application i.e.
Post #Hashtags, 🔄Reshare, @Mentions, Love.

It is in Ruby on Rails and extremely useful.

Please check this out: https://github.com/diaspora/diaspora.

Let us know if anything.

Turn Your Invention Ideas Into a Product in Simple Steps

2019-05-09T14:30:00.000+05:30

Whether you want to produce and market your invention yourself or license it to another company, the only way to make money from your invention and to guarantee that no one will steal your idea is to file a patent with the U.S. Patent and Trademark Office.

Step 1: Document It

Simply having an "idea" is worthless--you need to have proof of when you came up with the invention ideas. Write down everything you can think of that relates to your invention, from what it is and how it works to how you'll make and market it. This is the first step to patenting your idea and keeping it from being stolen. You've probably heard about the "poor man's patent"--writing your idea down and mailing it to yourself in a sealed envelope so you have dated proof of your invention's conception. This is unreliable and unlikely to hold up in court. Write your idea down in an inventor's journal and have it signed by a witness. This journal will become your bible throughout the patent process. An inventor's journal can by any bound notebook whose pages are numbered consecutively and can't be removed or reinserted. You can find specially designed inventor's journals at bookstores (try Nolo Pressor the Book Factoryto start), or you can save money and purchase a generic notebook anywhere they're sold, such as the grocery store, office supply store, stationary store, etc. Just make sure it meets the requirements above.

Step 2: Research It

You will need to research your idea from a legal and business standpoint. Before you file a patent, you should:

Complete an initial patent search. Just because you haven't seen your invention doesn't mean it doesn't already exist. Before you hire a patent attorney or agent, complete a rudimentary search for free at www.uspto.gov to make sure no one else has patented your idea. You should also complete a non-patent "prior art" search. If you find any sort of artwork or design related to your idea, you cannot patent it--regardless of whether a prior patent has been filed.
Research your market. Sure, your brother thinks your idea for a new lawn sprinkler is a great idea, but that doesn't mean your neighbor would buy one. More than 95 percent of all patents never make money for the inventor. Before you invest too much time and money into patenting your invention, do some preliminary research of your target market. Is this something people will actually buy? Once you know there's a market, make sure your product can be manufactured and distributed at a low enough cost so that your retail price is reasonable. You can determine these costs by comparing those of similar products currently on the market. This will also help you size up your competition--which you will have, no matter how unique you think your invention is.

Step 3: Make a Prototype

A prototype is a model of your invention that puts into practice all of the things you have written in your inventor's journal. This will demonstrate the design of your invention when you present it to potential lenders and licensees. Do not file a patent before you have made a prototype. You will almost always discover a flaw in your original design or think of a new feature you would like to add. If you patent your idea before you work out these kinks, it will be too late to include them in the patent and you will risk losing the patent rights of the new design to someone else.

Here are some general rules of thumb when prototyping your invention:

1. Begin with a drawing. Before you begin the prototyping phase, sketch out all of your ideas into your inventor's journal.

2. Create a concept mockup out of any material that will allow you to create a 3-D model of your design.

3. Once you're satisfied with the mockup, create a full-working model of your idea. There are many books and kits that can help you create prototypes. If your invention is something that will cost a lot of money or is unreasonable to prototype (like an oil refinery process or a new pharmaceutical drug), consider using a computer-animated virtual prototype.

Step 4: File a Patent

Now that you have all of the kinks worked out of your design, it's finally time to file a patent. There are two main patents you will have to choose from: a utility patent (for new processes or machines) or a design patent (for manufacturing new, nonobvious ornamental designs). You can write the patent and fill out the application yourself, but do not file it yourself until you have had a skilled patent professional look it over first. If the invention is really valuable, someone will infringe on it. If you do not have a strong patent written by a patent attorney or agent, you will be pulling your hair out later when a competitor finds a loophole that allows them to copy your idea. It's best to get the legal help now to avoid any legal problems in the future.

When searching for a patent attorney or agent, remember one thing: If you see them advertised on TV, run away! Once you are far, far away, follow these steps to choosing the best patent professional:

1. Do your homework. Have your inventor's journal, prototype and notes with you. This will save them time, and you money. This will also help persuade them to work with you.

2. Make sure they are registered with the U.S. Patent and Trademark Office.

3. Ask them what their technical background is. If your invention is electronic, find a patent professional who is also an electrical engineer.

4. Discuss fees. Keep your focus on smaller patent firms. They are less expensive and will work more closely with you. Agree to the estimated total cost before hiring your patent professional.

Step 5: Market Your Invention

Now it's time to figure out how you're going to bring your product to market. Create a business plan: How will you get money? Where will you manufacture the product? How will you sell it? Now is a good time to decide if you will manufacture and sell the product yourself, or license it for sale through another company. When you license your product you will probably only receive two percent to five percent in royalty fees. This often scares away inventors who feel they deserve more. But consider the upside: You will not have the financial burden associated with maintaining a business. This could end up making you more money in the long run.

Following these five steps will ensure an easy road to patenting your invention. Just remember that an easy road doesn't necessarily mean a short one. From the time you conceive your idea to the time you see your product on the shelf is a very long process. Most inventions take years to come to fruition. Have patience and follow due diligence in your steps to patenting your invention and your years of hard work will finally pay off.

Reference : https://www.entrepreneur.com/article/77962

How to Speed Up Your Ruby on Rails App.

2019-05-09T11:07:00.000+05:30

Ruby on rails is extremely popular as it speeds up development. This framework provides developers with a great collection of libraries. But just choosing Ruby on Rails doesn't means your project will succeed. To meet your users expectations, your Ruby on Rails should be fast.

What does it mean?
It means that over half of internet users expect that a page of website should be loads within seconds of time so they can use website efficiently and also it makes interests in them towards website or application. And around three quarters of web users won't return to a website if it takes longer than four seconds to load.

So here are some tips by which you can optimize your Application performance and can increase it as much as possible :-

* Eliminate the N+1 query problem

One of the most frequent causes of slow performance is the N+1 query problem which is faced by many Ruby on Rails application. This is because of using unusual queries which is not needed most of the times. As the project becomes bigger, this problem only compounds. You may find out that your project is running lots of queries to achieve one result rather than running one query with many results.
You need to cut down the independent queries to speedup the performance, So you can use eager loading associated relations. That means you should collect data with one query using eager loading.

You can also use Bullet gem which identifies and reports N+1 queries.

* Use Gems and Plugins

Some gems and plugins solve common problems in Ruby on rails applications so developers don't have to create solutions from scratch. Gems and plugins handle issues connected with APIs, security, Active Record, authentication etc.
But don't forget that lavish using of gems and plugin also degrades the performance of your Ruby on Rails application. So be careful and use gems and plugins wisely in your application.

* Use Background Processing

  Background processes can calculate statistics, process video, send emails, run reports, and do lots of other things. These scheduled tasks run periodically during the day. Optimize these processes so that they are handled automatically. Using Background processes you can increase your application performance.
There are tools created specially for Ruby on Rails framework that helps to manage background jobs e.g. Clockwork, Sidekiq etc.

* Use a content delivery network(CDN)

  Use a content delivery network(CDN) no matter which network or framework you use. CDNs are services that provide edge nodes around the world so that files are closer to a user's location. With CDNs, website content like JavaScript, CSS, HTML, images and videos load equally fast in different locations.

* Use indexing to database

A lack of indexes on columns is one of the reasons why some queries take way longer to execute than they should. When creating a database column without indexes the database engine will check every record in the table until it finds a match. With indexes, the lookup will be a lot faster, as the engine will check only specific records.
Indexes speedup the searches but degrades the update process so keep in mind while using indexes to your database table.

* Choose your web hosting provider wisely

  Web hosts offer important services like server management and backups. Choosing the right web hosting provider isn't only important for Ruby on Rails apps, as your web host influences the speed of any application. Different hosting packages provide different features.

  That's all for today!, Happy coding :)

Prepend in Ruby: How is it useful ?

2019-05-08T16:53:00.000+05:30

Modules are one of the most interesting features of Ruby. It is useful to avoid clashes with existing class, methods, etc. So that You can add(mix in) the functionality of modules into your classes. You can use them to attach specific behaviour on your classes, and organise your code using composition rather than inheritance.

Many Ruby developer are familiar with "extend" or "include", to understand how prepend works, it's important to know that how include/extend works in Ruby.

module Xyz
  def test_method
    puts "Hello from module."
  end 
end

Include

class Abc
    include Xyz

It mixes in specified module methods as instance methods in the target class e.g. It adds the methods in Xyz to the Abc class as instance methods.

Extend

class Abc
    extend Xyz

It mixes in specified module methods as class methods in the target class e.g. It adds the methods in Xyz to the Abc class as class methods.

When you call a method on an object, the Ruby interpreter tries to find that method definition in its class, if it doesn't find it, it checks the class it inherits from (superclass), and so on till it does. So when you use Include in a module, Ruby interpreter does is to inserts the included module right above the current class. This means that Xyz module is the superclass or parent class of Abc class.

Prepend

But prepend is slightly different different from Include/Extend, it is just opposite of Include/Extend means it puts the prepended module below the current class. It means that Abc class is the superclass or parent class of Xyz module.

class Abc
    prepend Xyz

How is it useful ?

Suppose you stuck in a situation that you have a number of classes which contain method name "test_method" which contain code and some lines of code are similar in all "test_methods" of all classes which you want to execute first and after you want to execute your code then you can do something like below. Here we define module name "Xyz" which have method "test_method" which print statement "Hello from module" and then it call super. Now prepend this module in any class where you want to use this feature. It means when you prepend "Xyz" module in your classes then firstly it will print the statement "Hello from module" and then by super it will invoke the same method name "test_method" in his superclass or parent class and will execute your line of codes e.g. "Hello from classes" after "Hello from module".

module Xyz
  def test_method
    puts "Hello from module"
    super
  end 
end

class Abc
  prepend Xyz  

  def test_method
    puts "Hello from classes"
    
    OR

    //your code

  end 
end

That's all for today!, Happy coding :)

Start a project in Rails 6

2019-04-04T15:55:00.000+05:30

Rails 6 (beta 3) is out and many clients are asking to upgrade to the latest version. Remember, Rails 6 is still in it's beta version. If you start a project, I would recommend to use stable version of rails i.e. Rails 5.2.x.

But If you want to start with Rails 6 then Rails 6 require Ruby version 2.5+.

If you are using RVM check your ruby version is greater than or equals to 2.5.0 then you can install rails 6 by creating a folder (say folder name is clecotech), then go to that folder and create a Gemfile with writing source and gem rails using below command.

$ mkdir clecotech
$ cd clecotech
$ echo "source 'https://rubygems.org'" >> Gemfile
$ echo "gem 'rails', git: 'https://github.com/rails/rails.git'" >> Gemfile
$ bundle install

You will see below lines after running bundle install command:

Fetching https://github.com/rails/rails.git
Fetching gem metadata from https://rubygems.org/.........
Resolving dependencies...
Using rake 12.3

After running bundle command run below command to create project files and folders


$ bundle exec rails new . --dev --force


       exist
      create  README.md
      create  Rakefile
      create  .ruby-version
      create  config.ru
      create  .gitignore
       force  Gemfile
         run  git init from "."

After creating folders structures and configuration file you just have to start the rails server from the command below:


$ bundle exec rails server -d
=> Booting Puma
=> Rails 6.0.0.alpha application starting in development
=> Run `rails server --help` for more startup options

That's it.

Your rails 6 project is started and running.

Let us know if you got any problem setting up rails 6 project or anything.

Here in ClecoTech we are the team of expert rails developers who can work on any version of Ruby on Rails. and we will love to help if you find any problem running the application.

Happy Coding :).

More References:
Rails 6 release notes
Rails Upgrading Guide

What is Active Storage? and How to use Active Storage?

2019-03-04T17:44:00.002+05:30

As per the Rails guide documentations:

Active Storage facilitates uploading files to a cloud storage service like Amazon S3, Google Cloud Storage, or Microsoft Azure Storage and attaching those files to Active Record objects. It comes with a local disk-based service for development and testing and supports mirroring files to subordinate services for backups and migrations.

So, Active Storage basically allow user to upload attachments (i.e. Images) to the remote storage clouds and and save object of the file into Active Record.

Earlier with Rails 3 and Rails 4, We had to upload the files using carrierwave gem. and With Rails 5.2 and after versions Rails has inbuilt feature for file uploading to cloud and save it's object in Active Record using Active Storage module.

Which gem should be used for remote storage?

For Amazone web services (S3), you should use below gem:

gem "aws-sdk-s3", require: false

For Azure Cloud storage, you should use below gem:

gem "azure-storage", require: false

For Google Cloud Storage, you should use below gem:

gem "google-cloud-storage", "~> 1.11", require: false

Configuration:

To Store files locally

config.active_storage.service = :local

To Store files locally

config.active_storage.service = :amazon

Use it as:

Upload file:

Using gems and configure that, You should use below lines to attache the avatar.

user.avatar.attach(params[:avatar])

Delete file:

user.avatar.purge

`Using has_many_attached macros`

The has_many_attached macro sets up a one-to-many relationship between records and files. Each record can have many files attached to it.

For example, suppose your application has a Product model. If you want each message to have many images, define the Product model like this:

class Product < ApplicationRecord
  has_many_attached :images
end

You can create a product with images:

class ProductsController < ApplicationController
  def create
    product = Product.create!(product_params)
    redirect_to product
  end
  private
    def product_params
      params.require(:product).permit(:title, :content, images: [])
    end
end

Call images.attach to add new images to an existing message:

@product.images.attach(params[:images])

Call images.attached? to determine whether a particular message has any images:

@product.images.attached?

Ref: Rails Guide

There are many other features included in it. Please go through the rails guide documentation.

Overall, It's a great feature included in rails and was most awaited since Rails 3.

For more information, Please visit: https://edgeguides.rubyonrails.org/active_storage_overview.html

Will India and Pakistan war affect IT Sector in India?

2019-02-27T20:06:00.002+05:30

Currently, India plays a very crucial role in Software development industry around the World. Most of the Software are outsourced to India directly or indirectly.

It is because because of the good quality of the work in lower cost. and advance timezone as compare to US and Europe.

IT works are mostly done online via Internet. and IT engineers mostly connected with all related news. If we talk about the war situation against Pakistan, Tension of the border also flow throughout the country indirectly. So small affect in the work is already seen due to online active media news etc.

But if the real war will happen:

In case of LOC war, If that is a ground level war or the war in the LOC border, then It will not have much impact on Software industry much.

In case of Nuclear war, If the level increase to the and the area of the violence spread to the Metro cities of the India i.e. Bangalore, Pune, Delhi, Noida, Mumbai or Kolkota then we are not sure how bad it will impact to India and the world. But it will be worst for the world for next 20 years or more.

InShort, Neither India Nor Pakistan want the War to show their army power to the world in cost of the loss for number of innocent people and going down in the growth of the country. Both country understand this and know their limits for sure.

Wishing, The Non-destructive sanguine thoughts.

Template Integration In Rails Application

2016-12-16T15:47:00.002+05:30

Hello Guys,

New Template Integration:

Steps:

1. Sylesheets

=> application.css

*= require 'css1'

*= require_tree .

Note: It will include all the sytlesheets directory css files

2. Javascripts

=> application.js

//= require '/newfolder/js1'

//= require 'js2'

//= require 'js3'

//= require 'js4'

//= require_tree .

Note: It will include all the javascripts directory js files

3. Images

Include all the Images in Directory of assets folder

4. Font

Include all you in Fonts Directory of assets folder

5. Layout

<!DOCTYPE html>

<html>

<head>

<title>Healthdax</title>

<%= stylesheet_link_tag "application" %>

<%= javascript_include_tag "application" %>

<%= csrf_meta_tags %>

</head>

<body>

<% if notice %>

<% end %>

<% if alert %>

<% end %>

<%= yield %>

</body>

</html>

6. Create Controller

Filename: welcome_controller.rb

class WelcomeController < ApplicationController

def index;end

end

7. Define Routes

resources :welcome

8. Views => welcome folder => create => index.html.erb

Here you paste all html content

9. Start you browser and then see your template

Basic Rails application with React.js

2016-10-10T19:50:00.000+05:30

Initializing our React.js on Rails project

By specifying database
rails new task_app -d mysql

With default database
rails new task_app

Install all the gems using bundle install

bundle install

Add a gem 'react-rails' with in the Gemfile

gem 'react-rails

Then, please install the new gems

bundle install

react-rails comes with an installation script, which will create a components.js file and a components directory under app/assets/javascripts where our React components will live.

rails g react:install

ashish@ashish:~/Desktop/projects/task_app$ rails g react:install

Running via Spring preloader in process 15471

create app/assets/javascripts/components

create app/assets/javascripts/components/.gitkeep

insert app/assets/javascripts/application.js

create app/assets/javascripts/components.js

If you take a look at your application.js file after running the installer, you will notice three new lines:

//= require react

//= require react_ujs

//= require components

Basically, it includes the actual react library, the components manifest file and a kind of familiar file ended in ujs. As you might have guessed for the file's name, react-rails includes an unobtrusive JavaScript driver which will help us to mount our React components and will also handle Turbolinks events.

Creating the Resource

We are going to create a Task resource which includes title, description, date and status. Instead of using the scaffold generator, we are going to use the resource generator, as we are not going to be using all of the files and methods created by the scaffold generator. Another option might be running the scaffold generator and then proceed to delete the unused files/methods, but our project can turn a little messy after this. Inside your project, run the following command:

rails g resource Task title description:text date:date status:string

ashish@ashish:~/Desktop/projects/task_app$ rails g resource Task title description:text date:date status:string

Running via Spring preloader in process 15699

invoke active_record

create db/migrate/20161010133903_create_tasks.rb

create app/models/task.rb

invoke test_unit

create test/models/task_test.rb

create test/fixtures/tasks.yml

invoke controller

create app/controllers/tasks_controller.rb

invoke erb

create app/views/tasks

invoke test_unit

create test/controllers/tasks_controller_test.rb

invoke helper

create app/helpers/tasks_helper.rb

invoke test_unit

invoke assets

invoke coffee

create app/assets/javascripts/tasks.coffee

invoke scss

create app/assets/stylesheets/tasks.scss

invoke resource_route

route resources :tasks

For some dump data, you can create a couple of tasks through rails console:

Please run these lines in rails console:

(1..4).to_a.collect{|i| Task.create(title:"Task #{i}",description:"Description about task #{i}",date:Date.today,status:"todo")}

(5..7).to_a.collect{|i| Task.create(title:"Task #{i}",description:"Description about task #{i}",date:Date.today,status:"pending")}

(8..10).to_a.collect{|i| Task.create(title:"Task #{i}",description:"Description about task #{i}",date:Date.today,status:"completed")}

Don't forget to start your server with rails s. Done!

We're ready to write some code.

Nesting Components: Listing Tasks

For our first task, we need to render any existing task inside a table. First of all, we need to create an index action inside of our TasksController:

# app/controllers/tasks_controller.rb

class TasksController < ApplicationController

def index

@tasks = Task.all

end

Next, we need to create a new file index.html.erb under apps/views/tasks/, this file will act as a bridge between our Rails app and our React Components. To achieve this task, we will use the helper method react_component, which receives the name of the React component we want to render along with the data we want to pass into it.

<%# app/views/tasks/index.html.erb %>

<%= react_component 'Tasks', { data: @tasks } %>

# app/config/routes.rb

Add a default route as "tasks#index"

Rails.application.routes.draw do

resources :tasks

root "tasks#index"

# For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html

end

The time has come for us to build our First React component, inside the javascripts/components directory, create a new file called tasks.js.coffee, this file will contain our Tasks component.

# app/assets/javascripts/components/tasks.js.coffee

@Tasks = React.createClass

render: ->

React.DOM.div

className: 'tasks'

React.DOM.h2

className: 'title'

'Tasks'

Now restart the application and it should look like that

The Task component will display a table row containing table cells for each task attribute. Don't worry about those nulls in the React.DOM.* calls, it means we are not sending attributes to the components. Now update the render method inside the Tasks component with the following code:

These are some new changes for tasks.js.coffee

# app/assets/javascripts/components/tasks.js.coffee

@Tasks = React.createClass

getInitialState: ->

tasks: @props.data

getDefaultProps: ->

tasks: []

render: ->

React.DOM.div

className: 'tasks'

React.DOM.h2

className: 'title'

'Tasks'

React.DOM.table

className: 'table table-bordered'

React.DOM.thead null,

React.DOM.tr null,

React.DOM.th null, 'Title'

React.DOM.th null, 'Description'

React.DOM.th null, 'Date'

React.DOM.th null, 'Todo'

React.DOM.th null, 'Pending'

React.DOM.th null, 'Completed'

React.DOM.tbody null,

for task in @state.tasks

React.createElement Task, key: task.id, task: task

The method getDefaultProps will initialize our component's properties in case we forget to send any data when instantiating it, and the getInitialState method will generate the initial state of our component. Now we need to actually display the tasks provided by our Rails view.

We need to create a new Task component to display each individual task, create a new file task.js.coffee under the javascripts/components directory and insert the following contents:

# app/assets/javascripts/components/task.js.coffee

@Task = React.createClass
render: ->
React.DOM.tr null,
React.DOM.td null, @props.task.title
React.DOM.td null, @props.task.description
React.DOM.td null, @props.task.date
React.DOM.td null, statusFormat("todo", @props.task.status)
React.DOM.td null, statusFormat("pending", @props.task.status)
React.DOM.td null, statusFormat("completed", @props.task.status)

It looks like we are going to need a helper method to format the status. Create a new utils.js.coffee file under javascripts/ with the following contents:

# app/assets/javascripts/utils.js.coffee

@statusFormat = (manual_status, automatic_status) ->

if manual_status==automatic_status

"Yes"

Now restart the rails application and it should look like that

Now we will add some designing stuff. We will use twitter bootstrap.

Add gem "twitter-bootstrap-rails" gem with in the Gemfile

gem "twitter-bootstrap-rails"

Then, please install the new gems

bundle install

After running bundle install, run the generator:

rails generate bootstrap:install static

ashish@ashish:~/Desktop/projects/task_app$ rails generate bootstrap:install static

Running via Spring preloader in process 18039

insert app/assets/javascripts/application.js

create app/assets/javascripts/bootstrap.js.coffee

create app/assets/stylesheets/bootstrap_and_overrides.css

create config/locales/en.bootstrap.yml

gsub app/assets/stylesheets/application

You can run following generators to get started with Bootstrap quickly.

rails g bootstrap:layout [LAYOUT_NAME]

rails g bootstrap:layout application

ashish@ashish:~/Desktop/projects/task_app$ rails g bootstrap:layout application

Running via Spring preloader in process 18093

conflict app/views/layouts/application.html.erb

Overwrite /home/ashish/Desktop/projects/task_app/app/views/layouts/application.html.erb? (enter "h" for help) [Ynaqdh] y

force app/views/layouts/application.html.erb

We have to override application.html.erb forcefully after running the rails g bootstrap:layout application

Now restart the rails application and it should look like that

Uploading the Images While Pick Image From FilePicker With Filestack Services

2016-03-19T13:55:00.002+05:30

Hey Guys,

we can pick the image while uploading from different sources like dropbox,computer,google pic,goole search image,facebook etc.. by using filepicker with filestack services

here is my steps

Step1: Add Gem

gem 'filepicker-rails'(do bunlde install)

Step 2: Need to add the key in application.rb

config.filepicker_rails.api_key = "XXXXXXXXXXXX"

Step 3: Create Form

<%= f.filepicker_field :filepicker_url,dragdrop: true,services: "COMPUTER" %>
we can restrict the different sources while providing service: "Computer" its only picking images from only computer rest of all sources its restricting.

Step 4: Show Image

<%= filepicker_image_tag @campaign.filepicker_url, w: 160, h: 160, fit: 'clip'%>

here is my reference link:

https://github.com/Ink/filepicker-rails

https://rubygems.org/gems/filepicker-rails/versions/2.1.0

Thank You !!!!!!

Send Text Message and Voice Message Using Twilio with Rails 4

2016-03-19T13:14:00.000+05:30

Hello Guys,

Send text message and voice message with call using twilio with rails 4

here my steps:

Step1: Need to add this into you gem file

gem 'twilio-ruby', '~> 4.1.0' (do bundle install)

Step 2: set your twilio application and secret key in your secret.yml file and create method

twilio_account_sid: XXXXXXXXXXX
twilio_auth_token: XXXXXXXXXXX

Step 3: creating Method for sending the Text Message

# Method for giving the twillo credential to send message to phone number def send_otp
def send_otp Twilio::REST::Client.new(Rails.application.secrets.twilio_account_sid,Rails.application.secrets.twilio_auth_token)
end

# Method for generating random otp number
def generated_otp
otp_number = rand(0000..9999).to_s.rjust(4, "0")
end

# Method for checking the onfirmation of the particular mobiler number otp
def confirm_verify_number
# make it session nil and send otp request to phone number
send_request = send_otp_request
end

# Method for send otp request to the phone number
def send_otp_request
# generating the otp number
otp_number = generated_otp
send_otp.account.messages.create(to: "+1"<<#{Your Phone Number},from: "#{Twilio Number}",body: otp_number.to_i)
end

it will send message to your phone

Step 4: creating the method for creating the voice message(need follow same step last method need to replace with below method)

def send_otp_request
# generating the otp number
otp_number = generated_otp
# create call
send_otp.account.calls.create(
:from => '+16467367408',:to => "+1"+#{Phone Number}r,:url => "http://twimlets.com/echoTwiml=%3CResponse%3E%3CSay%3EThank+you+to+be+part+of+adsonrides.com+your+number+is+#{otp_number[0]}+#{otp_number[1]}+#{otp_number[2]}+#{otp_number[3]}+once+again+#{otp_number[0]}+#{otp_number[1]}+#{otp_number[2]}+#{otp_number[3]}+Please+Do+Not+Share+Number+With+Any+One+Thank+You+Enjoy+Our+Services+Good+Bye.%3C%2FSay%3E%3C%2FResponse%3E")

end

enjoy this blog without using any twilio setting

Thank You !!!!!

Address Search Using Google Search Autocomplete With Restricted Countries

2016-03-16T13:54:00.001+05:30

We can easily search the particular address with Street No,Street,City,State and Country using google search autocomplete, below my code is implement in ruby on rails

Address Search

Here my java script

<script src="http://maps.googleapis.com/maps/api/js?sensor=false&libraries=places"></script>

Receive emails from gmail or any other email provider ( IMAP Ruby On Rails )

2016-03-07T17:40:00.000+05:30

Configure your gmail for sending emails to other mail clients

You can retrieve your Gmail messages with a client or device that supports IMAP, like Microsoft Outlook or Apple Mail.

Enable IMAP in your Gmail settings

1. Sign in to Gmail.
2. Click the gear in the top right .
3. Select Settings.
4. Click Forwarding and POP/IMAP.
5. Select Enable IMAP.
6. Click Save Changes.

If you're using a client that's not listed above, you can also use the following information to configure your IMAP. If you have problems, contact your mail client's customer support department for further instructions.

Incoming Mail (IMAP) Server - Requires SSL
imap.gmail.com
Port: 993
Requires SSL:Yes

For more information about imap you can refer that link
https://support.google.com/mail/troubleshooter/1668960?hl=en#ts=1665018%2C1665144

After that go to this url and you will find lots of information for allowing access by device or any mail client:
https://support.google.com/mail/accounts/answer/78754
=> You can find out the screenshot of same thing below that I have followed to get access for my ruby on rails application

1. Allow access to your Google account:
https://accounts.google.com/b/0/DisplayUnlockCaptcha

2. Access for less secure apps:
https://www.google.com/settings/security/lesssecureapps

After doing all these configurations and setting, we can access the gmail emails using IMAP :

We are using ruby libraries to fetching emails from gmail using :
An IMAP client connects to a server, and then authenticates itself using either authenticate() or login().

List sender and subject of all recent messages in the default mailbox

require "net/imap.rb"
imap = Net::IMAP.new('imap.gmail.com',993,true)
# We are using gmail as a mail provider so below mentioned method can be differ as per mail provider
imap.login('test@gmail.com', 'password')
imap.examine('INBOX')
imap.search(["All"]) // Shows all ids of inbox message
imap.search(["All"]) /
imap.search(["RECENT"]).each do |message_id|
envelope = imap.fetch(message_id, "ENVELOPE")[0].attr["ENVELOPE"]
body = imap.fetch(message_id,'BODY[TEXT]')[0].attr['BODY[TEXT]']
puts "#{envelope.from[0].name}: \t#{envelope.subject}"
end

For more information about using imap with ruby you can refer below mentioned link
http://ruby-doc.org/stdlib-1.9.3/libdoc/net/imap/rdoc/Net/IMAP.html

Example: Imap service that fetch the new updated emails from gmail. We are saving id of last gmail mail in database


    
class ImapService
  require "net/imap.rb"

  def initialize(params={})
    @email = params[:email] || 'example@gmail.com'
    @password = params[:password] ||  'testpassword'
    @imap_server = params[:imap_server] ||  'imap.gmail.com'
    @port = params[:port] || 993
    @ssl = params[:ssl] || true
  end

  def save_emails_in_database
    imap = select_inbox
    latest_email = LatestEmail.last
    ## Check that in database we have stored an id of last fetched email or not
    last_email_id = latest_email.email_id rescue nil
    if last_email_id
      ## We will fetch all emails greater than the saved id in database
      new_email_ids = fetch_latest_emails(imap, last_email_id)
      fetch_body_and_save(imap, new_email_ids)
      last_email_id = new_email_ids.last
    else
      last_email_id = fetch_last_email(imap)
    end
    true
    ## Save last_email_id in database 
    if latest_email.blank?
     latest_email = LatestEmail.new(email_id: last_email_id)
    else
     latest_email.email_id=last_email_id
    end
    latest_email.save
  end

  def save_latest_emails_in_database
    begin
     save_emails_in_database
    rescue
      false
    end
  end

  private
    attr_reader :email, :password, :imap_server, :password, :port, :ssl

  # attr_reader :address

  def external_imap_service
    Net::IMAP
  end

  def fetch_latest_emails(imap, last_email_id)
    imap.search("#{last_email_id}:*")
  end

  def fetch_all_emails(imap)
    imap.search("all").last
  end

  def connect_to_imap
    external_imap_service.new(imap_server,port,ssl)
  end

  def select_inbox
    imap = connect_to_imap
    imap.login(email, password)
    imap.examine('INBOX')
    return imap
  end

  def fetch_body_and_save(imap, new_email_ids)
    new_email_ids.each do |email_id|
      body_text = fetch_email_body(imap, email_id)
      ## Save your emails from here :-)
    end
  end

  def fetch_email_body(imap, email_id)
     imap.fetch(email_id,'BODY[TEXT]')[0].attr['BODY[TEXT]']
  end

end

Permtting the Multiple Params Without Using Mutiple Condition

2016-03-05T14:01:00.001+05:30

We can permit different type of model attributes without using the multiple condition

we normally using below code to permit attributes with multiple condition


  if params[:model]=="user"
  User.create(user_params)
 elsif params[:model]=="test"
  Test.create(test_params)
 elsif params[:model]=="post"
  Post.create(post_params)
 elsif params[:model]=="comment"
  Comment.create(comment_params) 
 elsif params[:model]=="reply"
  Reply.create(reply_params)
 end

here my code customize the mutiple condition in one line


class HomeController < ApplicationController

 def save_data
   params[:model].camelcase.constantize.create(send("#{params[:model]}_params"))
   # if params[:model]=="user"
   #  User.create(user_params)
   # elsif params[:model]=="test"
   #  Test.create(test_params)
   # elsif params[:model]=="post"
   #  Post.create(post_params)
   # elsif params[:model]=="comment"
   #  Comment.create(comment_params)
   # elsif params[:model]=="reply"
   #  Reply.create(reply_params)
   # end
 end

 private 
 def user_params
 end


 def test_params
 end


 def post_params
 end


 def comment_params
 end

 def reply_params
 end

end

Sunspot Solr Search example with all important features

2016-03-03T15:18:00.001+05:30

Below you will find all the practical information about that sunspot solr search:

Points those are covered below :

1. Solr search for same model
2. Solr search in relationships
a. has_many ( Using Join )
b. has_one ( Using Join and without join )
3. Search products by price ranges
a. Follow that for more specific information http://www.clecotech.in/2016/02/multiple-range-filter-with-float-or.html
4. Order all the products by location ( lat lng ) as per end user location
a. In model
latlon(:location) { Sunspot::Util::Coordinates.new(store.lat, store.lng) }
b. In controller
order_by_geodist(:location, params[:latitude], params[:longitude])
5. Find nearest products in some distance as per my location ( lat, long )
with(:location).in_radius(params[:latitude], params[:longitude], params[:distance]) if !params[:distance].blank? && params[:distance].to_i > 0
6. Search by tags as per acts-as-taggable-on gem or normal array of tags
a. In Model
string :tags, :multiple => true do
tags.collect(&:name)
end
b. In Controller
with(:tags, params[:tags].split(",")) if !params[:tags].blank?

We are setting up the objects inside the model like that :

  # Setting Up Objects  
  searchable do
    integer :id
    integer :store_id
    text :title
    join(:city, :target => Store, :type => :text, :join => { :from => :id, :to => :store_id })
    join(:state, :target => Store, :type => :text, :join => { :from => :id, :to => :store_id })
    join(:landmark, :target => Store, :type => :text, :join => { :from => :id, :to => :store_id })
    join(:address, :target => Store, :type => :text, :join => { :from => :id, :to => :store_id })
    join(:pin_code, :target => Store, :type => :text, :join => { :from => :id, :to => :store_id })
    latlon(:location) { 
      Sunspot::Util::Coordinates.new(store.lat, store.lng)
    }
    string :tags, :multiple => true do
      tags.collect(&:name)
    end
    float :pricing do
      pricing.mrp_per_unit
    end
    # join(:mrp_per_unit, :target => Pricing, :type => :float, :join => { :from => :product_id, :to => :id })
    text :category do
      category.title
    end
    text :sub_category do
      sub_category.title
    end
    text :child_sub_category do
      child_sub_category.title
    end
  end

It is the code that we can write in controller for performing the search based on the added objects in model:

  Product.search do 
    fulltext params[:q] if !params[:q].blank?
    order_by_geodist(:location, params[:latitude], params[:longitude])
    fulltext params[:pin_code], {fields: :pin_code} if !params[:pin_code].blank?
    with(:tags, params[:tags].split(",")) if !params[:tags].blank?
    with(:location).in_radius(params[:latitude], params[:longitude], params[:distance]) if !params[:distance].blank? && params[:distance].to_i > 0
    fulltext params[:location], {
      fields: [:city, :landmark, :address, :state]
    } if !params[:location].blank?
    any_of do 
      params[:pricing].collect{|range| 
        eval(range).is_a?(Range) ? with(:pricing).between(eval(range)) : with(:pricing).greater_than(eval(range))  
      }
    end if !params[:pricing].blank?
    paginate :page => params[:page], per_page: 15
  end.results

For more simple example please visit that

http://www.clecotech.in/2016/02/sunspot-solr-search-in-ruby-on-rails.html
http://www.clecotech.in/2016/02/multiple-range-filter-with-float-or.html
https://github.com/sunspot/sunspot

Solr Search, Multiple range filter with float or integer columns for joins with sunspot

2016-02-29T15:57:00.001+05:30

I have struggled too much for finding out the appropriate solution but still looking for the best one. Below you can find out an alternative to make that work for at least one column that belongs to other model.

Product Model :

class Product < ActiveRecord::Base
searchable do
    integer :id
    # we are indexing mrp_per_unit column of pricings table
    float :pricing do
      pricing.mrp_per_unit
    end
    # I was trying to make multiple range filter work with join but not succeed so I have raised an issue on github sunspot repo https://github.com/sunspot/sunspot/issues/770
    # join(:mrp_per_unit, :target => Pricing, :type => :float, :join => { :from => :product_id, :to => :id })
  end
end

Pricing Model :

class Pricing < ActiveRecord::Base
  belongs_to :product
  searchable do
    integer :product_id
    float :mrp_per_unit
  end
end

Search Controller :

@search = Product.search do      
    any_of do
        # You can write more or can make it dynamic as per your requirement
        # It is only for example that will help you in understanding that
        # In that way you will see the whole data filtered as per the specified ranges
        with(:pricing, 1..100)
        with(:pricing, 101..200) 
        with(:pricing, 201..300) 
        with(:pricing, 301..400) 
        with(:pricing, 401..500)  
    end
end
@search.results

You can find out the case in brief here at my github issue

https://github.com/sunspot/sunspot/issues/770

Chance to get featured at clecotech.in

2016-02-29T02:50:00.001+05:30

All the facebook  members, here is a chance for you to get featured in our website background cover. Upload your one of the favorite holi pic at facebook page and selected pic will be featured at clecotech.in hurry up!

Click here...

https://www.facebook.com/Clecotech

Know more about Aadhaar Card ( UID )

2016-02-28T17:47:00.001+05:30

The actual UIDAI-Aadhaar number is 11 digits and not 12 digits. Well, do not be surprised.

The first 11 digits of the 12 digit Aadhaar number displayed on your Aadhaar card is the actual UID Number and the 12th digit is the checksum associated with Verhoeff Algorithm scheme.

What is Checksum?

The checksum is the last digit in the number series of a number, through which data-entry errors can be eliminated to a large extent.

The purpose of check digits is simple. Any time identifiers (typically number +/- letters) are being manually entered via keyboard, there will be errors. Inadvertent keystrokes or fatigue can cause digits to be rearranged, dropped, or inserted. The most common example is of misdialing phone numbers.

Check digits help to reduce the likelihood of errors by introducing a final digit that is calculated from the prior digits. Using the proper algorithm, the final digit can always be calculated. Therefore, when a number is entered into the system (manually or otherwise), the computer can instantly verify that the final digit matches the digit predicted by the check digit algorithm. If the two do not match, the number is refused. The end result is fewer data entry errors.

In today’s world, two checksum algorithms are widely used. There are

01) Luhn algorithm.

02) Verhoeff algorithm.

The Luhn Algorithm’s most common usage is in the generation of credit card numbers.

The Verhoeff algorithm’s most common usage is in the UIDAI-Aadhaar number generation program.

The Verhoeff algorithm is a complicated one, and cannot be calculated manually. This is suitable for computer-era.

The Verhoeff algorithm, a checksum formula for error detection first published in 1969, was developed by Dutch mathematician Jacobus Verhoeff (born 1927). Like the more widely known Luhn algorithm, it works with strings of decimal digits of any length. It detects all single-digit errors and all transposition errors involving two adjacent digits.

As 100 crores+ Aadhaar numbers will be generated, the Verhoeff Algorithm was the chosen one. And, it is not expected that any one will try to manually validate the Aadhaar number.

Aadhaar number is a random generated number, with no preset formula like the other Indian numbers, be it Pin code, IT PAN, Passport Number or Bank Account number.

So if you wants to create your function to validate the Aadhaar number than you can follow Verhoeff algorithm. Below you can find out the javascript way of making it possible to validate Aadhaar number

// verhoeff check is the string method that is validating the aadhaar card number
// In alert it will return true or false as per the validations
alert("222233334444".verhoeffCheck())

Verhoeff algorithm js required to use aadhaar number validation

// Verhoeff algorithm
var Verhoeff = {
 "d":[[0,1,2,3,4,5,6,7,8,9],
  [1,2,3,4,0,6,7,8,9,5],
  [2,3,4,0,1,7,8,9,5,6],
  [3,4,0,1,2,8,9,5,6,7],
  [4,0,1,2,3,9,5,6,7,8],
  [5,9,8,7,6,0,4,3,2,1],
  [6,5,9,8,7,1,0,4,3,2],
  [7,6,5,9,8,2,1,0,4,3],
  [8,7,6,5,9,3,2,1,0,4],
  [9,8,7,6,5,4,3,2,1,0]],
 "p":[[0,1,2,3,4,5,6,7,8,9],
  [1,5,7,6,2,8,3,0,9,4],
  [5,8,0,3,7,9,6,1,4,2],
  [8,9,1,6,0,4,3,5,2,7],
  [9,4,5,3,1,2,6,8,7,0],
  [4,2,8,6,5,7,3,9,0,1],
  [2,7,9,3,8,0,6,4,1,5],
  [7,0,4,6,9,1,3,2,5,8]],
 "j":[0,4,3,2,1,5,6,7,8,9],
 "check":function(str)
 {
  var c = 0;
  str.replace(/\D+/g,"").split("").reverse().join("").replace(/[\d]/g, function(u, i, o){
   c = Verhoeff.d[c][Verhoeff.p[i&7][parseInt(u,10)]];
  });
  return (c === 0);
  
 },
 "get":function(str){
  var c = 0;
  str.replace(/\D+/g,"").split("").reverse().join("").replace(/[\d]/g, function(u, i, o){
   c = Verhoeff.d[ c ][ Verhoeff.p[(i+1)&7][parseInt(u,10)] ];
  });
  return Verhoeff.j[c];
 }
};



// Verhoeff algorithm validator, by Avraham Plotnitzky. (aviplot at gmail)
String.prototype.verhoeffCheck = (function()
{
 var d = [[0,1,2,3,4,5,6,7,8,9],
   [1,2,3,4,0,6,7,8,9,5],
   [2,3,4,0,1,7,8,9,5,6],
   [3,4,0,1,2,8,9,5,6,7],
   [4,0,1,2,3,9,5,6,7,8],
   [5,9,8,7,6,0,4,3,2,1],
   [6,5,9,8,7,1,0,4,3,2],
   [7,6,5,9,8,2,1,0,4,3],
   [8,7,6,5,9,3,2,1,0,4],
   [9,8,7,6,5,4,3,2,1,0]];
 var p = [[0,1,2,3,4,5,6,7,8,9],
   [1,5,7,6,2,8,3,0,9,4],
   [5,8,0,3,7,9,6,1,4,2],
   [8,9,1,6,0,4,3,5,2,7],
   [9,4,5,3,1,2,6,8,7,0],
   [4,2,8,6,5,7,3,9,0,1],
   [2,7,9,3,8,0,6,4,1,5],
   [7,0,4,6,9,1,3,2,5,8]];
 var j = [0,4,3,2,1,5,6,7,8,9];

 return function()
 {
  var c = 0;
  this.replace(/\D+/g,"").split("").reverse().join("").replace(/[\d]/g, function(u, i, o){
   c = d[c][p[i&7][parseInt(u,10)]];
  });
  return (c === 0);
 };
})();

// Verhoeff algorithm producer, by Avraham Plotnitzky. (aviplot at gmail)
String.prototype.verhoeffGet = (function()
{
 var d = [[0,1,2,3,4,5,6,7,8,9],
   [1,2,3,4,0,6,7,8,9,5],
   [2,3,4,0,1,7,8,9,5,6],
   [3,4,0,1,2,8,9,5,6,7],
   [4,0,1,2,3,9,5,6,7,8],
   [5,9,8,7,6,0,4,3,2,1],
   [6,5,9,8,7,1,0,4,3,2],
   [7,6,5,9,8,2,1,0,4,3],
   [8,7,6,5,9,3,2,1,0,4],
   [9,8,7,6,5,4,3,2,1,0]];
 var p = [[0,1,2,3,4,5,6,7,8,9],
   [1,5,7,6,2,8,3,0,9,4],
   [5,8,0,3,7,9,6,1,4,2],
   [8,9,1,6,0,4,3,5,2,7],
   [9,4,5,3,1,2,6,8,7,0],
   [4,2,8,6,5,7,3,9,0,1],
   [2,7,9,3,8,0,6,4,1,5],
   [7,0,4,6,9,1,3,2,5,8]];
 var j = [0,4,3,2,1,5,6,7,8,9];

 return function()
 {
  var c = 0;
  this.replace(/\D+/g,"").split("").reverse().join("").replace(/[\d]/g, function(u, i, o){
   c = d[c][p[(i+1)&7][parseInt(u,10)]];
  });
  return j[c];
 };
})();

Sync : Real-time partials with Rails

2016-02-25T16:56:00.000+05:30

Add Gem:

Faye:

gem 'faye'
gem 'thin', require: false
gem 'sync'

OR

Pusher:

gem 'pusher'
gem 'sync'

Install Sync:

bundle
rails g sync:install

Include:

Application.js:

//= require sync

Application.html.rb:

Ruby > 2.0.0 ::  <%= include_sync_config %>

Ruby <= 2.0.0 ::  <%#= javascript_include_tag Sync.adapter_javascript_url %>

Model:

sync :all

Controller:

To apply on all action : enable_sync

Add on individual action : sync_new / sync_update / sync_destroy

Html page:

For Post model show/index page:

Show/Update :: <%= sync partial: 'post', collection: Post.all %>

New :: <%= sync_new partial: 'post', resource: Post.new %>

Sync Server:

rackup sync.ru -E production

Reference: Realtime render partials in Rails with Sync

Bind bootstrap tooltip on dynamic elements

2016-02-24T13:05:00.000+05:30

It is pretty simple to bind a tooltip with elements. Generally, it happends when we works with dynamic elements than it creates problem for some js functions. Tooltip is on of them that never works with dynamic element. So for overcoming that problem we have to bind the tooltip on dynamic elements.

Example.1 :

$('body').tooltip({
selector: '.current-div'
});

<html>
<head>
..................
..................
</head>
<body>
<div class="current-div'" data-toggle="tooltip" title="I am tooltip.">Hover over me</div>
</body>
</html>

Example.2:

$('body').tooltip({
selector: '[data-toggle]',
position: 'top'
});

<html>
<head>
..................
..................
</head>
<body>
<a href="#" data-toggle="tooltip" data-placement="top" title="Favorite"><i class="fa fa-heart-o"></i></a>
</body>
</html>

Sunspot Solr Search in Ruby On Rails

2016-02-22T14:41:00.002+05:30

For using solr search in ruby on rails application. We have to use some ruby libraries that intereacts with the solr search So sunspot is on of the good library for working with solr search.

These gems are required to use in gemfile to install the sunspot libary.

gem 'sunspot_rails'
gem 'sunspot_solr' # optional pre-packaged Solr distribution for use in development

Bundle it!
bundle install

Generate a default configuration file:
rails generate sunspot_rails:install

If sunspot_solr was installed, start the packaged Solr distribution with:
bundle exec rake sunspot:solr:start # or sunspot:solr:run to start in foreground

Setting Up Objects
Add a searchable block to the objects you wish to index.

Example : 1

class Article < ActiveRecord::Base
has_many :posts
searchable do
    text :title, :body
    text :posts do
      posts.map { |post| post.body }
    end

    boolean :featured
    integer :blog_id
    integer :author_id
    integer :category_ids, :multiple => true
    double :average_rating
    time    :published_at
    time    :expired_at

    string :sort_title do
      title.downcase.gsub(/^(an?|the)/, '')
    end
end
end

# Use that in controller
Post.search do
fulltext 'best pizza'
with :blog_id, 1
with(:published_at).less_than Time.now
order_by :published_at, :desc
paginate :page => 2, :per_page => 15
facet :category_ids, :author_id
end

Example : 2
class Product < ActiveRecord::Base
acts_as_taggable
belongs_to :category
belongs_to :sub_category
belongs_to :child_sub_category, class_name: "SubCategory"
# title is the column of products table
searchable do
    text :title
    text :category do
      category.title
    end
    text :sub_category do
      sub_category.title
    end
    text :child_sub_category do
      child_sub_category.title
    end
    text :tags do
      tags.map { |tag| tag.name }
    end
end

# Use that in controller
search = Product.search do
fulltext params[:q]
end
@search = search.results

Example : 3
In this example, you can find there is the association between product and store. In relationship, there is store has_many products and product belongs_to store. If you wants to show contents from products table based on the search from stores table columns. Than you can follow the below way of structure

class Product < ActiveRecord::Base
belongs_to :store
searchable do
text :title
text :store do
#Indexing stores columns for searching data
[store.city, store.state, store.landmark, store.address, store.pin_code]
end
text :category do
category.title
end
text :sub_category do
sub_category.title
end
text :child_sub_category do
child_sub_category.title
end
text :tags do
tags.map { |tag| tag.name }class Product < ActiveRecord::Base
end
end
end

1 # Use that in controller
search = Product.search do
# I am only searching from store columns and retriving the list of products
fulltext params[:q], {:fields => :store}
paginate :page => params[:page], per_page: 15
end
@search = search.results

2 # Use that in controller
search = Product.search do
# This default query is searching from all the respected columns those are in searchable block of products
fulltext params[:q]
# We are filtering the data using location params. So whatever data we got from "fulltext params[:q]" that is being filtered by store attr (store.city, store.state, store.landmark, store.address, store.pin_code)
fulltext params[:location], {:fields => :store}
paginate :page => params[:page], per_page: 15
end
@search = search.results

Example : 4
In this example, you can find there is the association between product and store. In relationship, there is store has_many products and product belongs_to store. We are doing search from columns of stores table and providing relevant products.

We are using join because we wants to filter the result using individual columns of store model as mentioned in Query 1.
In this example, you can find
Query. 1
fulltext params[:pin_code], {fields: :pin_code}

Also we can combine and search them from controller as mentioned in Query.2

Query. 2
# It is filtering data of products using [:city, :landmark, :address, :state] that is present in stores table
fulltext params[:location], {
fields: [:city, :landmark, :address, :state]
}

class Product < ActiveRecord::Base
belongs_to :store
# Setting Up Objects
searchable do
integer :store_id
text :title
join(:city, :target => Store, :type => :text, :join => { :from => :id, :to => :store_id })
join(:state, :target => Store, :type => :text, :join => { :from => :id, :to => :store_id })
join(:landmark, :target => Store, :type => :text, :join => { :from => :id, :to => :store_id })
join(:address, :target => Store, :type => :text, :join => { :from => :id, :to => :store_id })
join(:pin_code, :target => Store, :type => :text, :join => { :from => :id, :to => :store_id })
# text :store do
# [store.city, store.state, store.landmark, store.address, store.pin_code]
# end
text :category do
category.title
end
text :sub_category do
sub_category.title
end
text :child_sub_category do
child_sub_category.title
end
text :tags do
tags.map { |tag| tag.name }
end
end
end

1 # Use that in controller
search = Product.search do

fulltext params[:q]
fulltext params[:pin_code], {fields: :pin_code}
fulltext params[:location], {
fields: [:city, :landmark, :address, :state]
}
paginate :page => params[:page], per_page: 15
end
@search = search.results

If you make a change to the object's "schema" (code in the searchable block), you must reindex all objects so the changes are reflected in Solr:

bundle exec rake sunspot:reindex

# or, to be specific to a certain model with a certain batch size:
bundle exec rake sunspot:reindex[500,Post] # some shells will require escaping [ with \[ and ] with \]

# to skip the prompt asking you if you want to proceed with the reindexing:
bundle exec rake sunspot:reindex[,,true] # some shells will require escaping [ with \[ and ] with \]

If you are using Rails, objects are automatically indexed to Solr as a part of the save callbacks.

There are a number of ways to index manually within Ruby:

# On a class itself
Person.reindex
Sunspot.commit # or commit(true) for a soft commit (Solr4)

# On mixed objects
Sunspot.index [post1, item2]
Sunspot.index person3
Sunspot.commit # or commit(true) for a soft commit (Solr4)

# With autocommit
Sunspot.index! [post1, item2, person3]

Freedom 251 : Specifications,How to Book and Concerns

2016-02-20T01:29:00.001+05:30

Ringing Bells,, a little-know Noida-based company, has launched the Freedom 251 smartphone in New Delhi on 17-Feb-2016. At the launch, the company said you can buy the Rs. 251 smartphone by booking on the official website freedom251.com from 6 am on February 18 to 8 pm on February 21.The deliveries, however, will be completed four months later – by June 30, 2016. This article covers Freedom 251, which might be the cheapest smartphone in the world, its specifications, What are the concerns about Freedom 251,Why is it so cheap and How to Book?

Specifications of Freedom 251

On Surface of it Freedom 251 seems good. Specifications are given below.

Operating System : Android
Android Version : 5.1 Lollipop
Processor : 1.3 GHz Quad Core
RAM : 1 GB
ROM (Internal Storage) : 8 GB
Expandable Memory : Upto 32 GB via a microSD card.
Front Camera : 0.3 MP
Rear Camera : 3.2 MP
Screen Size (Display) : 4″ Inch with a resolution of 540 pixels by 960 pixels.
Battery : 1450 mAh
Price : 251 Rupees Only
Dual-SIM 3G capable phone. Connectivity options include Wi-Fi, Bluetooth, FM. Sensors on the phone include Proximity sensor.
The Freedom 251 smartphone ships with a number of apps pre-installed on it like Women Safety, Swachh Bharat, WhatsApp, Facebook, and YouTube.
The phone will come with a standard warranty of 1 year. According to the company’s website, “this warranty of the product extends for a period of 12 months for the host unit, 6 months for battery and charger, and 3 months for earphone commencing from the date of purchase.”

Ringing Bells Freedom 251

The Freedom 251 looks like yet another iPhone clone, not only on the exterior (complete with the circular home button) but even the app icons appear like a rip-off of what’s found on iOS.

Make Money with GoDaddy. Simplest way to earn !

2015-12-07T14:02:00.001+05:30

GoDaddy is the largest domnain and hosting selling platform. Now its the time to get some commision on selling or buying the products from go daddy. GoDaddy provides varity of commision based programs. Godaddy offers affilate and domain parking brogram, if you will integrate any of the program from both of them than you can start generating good revenues right away. Also, there is a reseller program to resell godaddy products and can have good commisions. If you are interested to open your own online store to sell godaddy products than you can do that as well.

Affiliate Programs
In GoDaddy affliate program, if any customer is refered by you and making any of the godaddy product purchase than you can get upto 40% commission depending upon your product or serivce. You will get a custom url to promote on your website, blog or forum. It is free service.

CashParking
In Cash parking program, if there is an domain that you are not using at present than you can park your page with the CashParking program of godaddy. GoDaddy will display adds on your page and you can generate 60% to 80% revenue when user clicks on ads.

Reseller Program
In API Reseller Service, if you wants to sell GoDaddy service under your brand than you can go with that reseller service of GoDaddy. You can purchase a annual plan of that service on the go.

Build an Online Store
In API Reseller Service, you can open an online store and sell your own products and services (See Resources.) No programming is required, you'll have access to 24/7 technical support and you can accept credit cards directly on your website. You'll have to pay a monthly fee directly to GoDaddy to use the service, but you can set your own prices for the products you sell.
CashParking

References
GoDaddy: Affiliate Program
GoDaddy: Domain Name Parking
GoDaddy: API Reseller
GoDaddy: Shopping Cart

Mongo query with aggregate function for rails

2015-12-07T13:06:00.001+05:30

Group by state and created at:

Mongo query to count no. of questions and votes by different gender with their total sum.

group_by = if @filter[:by] == 'geolocation'

({ "country_code": "$country_code", "state_code": "$state_code" })

else

({ "day": {"$dayOfMonth": "$created_at"}, "month": {"$month": "$created_at"}, "year": {"$year": "$created_at"} })

end

data = Question.collection.aggregate([

{ "$match":

{

"asked_to": @filter[:loggedin_user_id],

"created_at": { "$gte": filter[:from_date], "$lt": filter[:to_date] }

}

{ "$group":

{ "_id": group_by,

"male": {"$sum":{"$cond":[{"$eq":["$asker_gender", "male"]},1,0]} },

"female": {"$sum":{"$cond":[{"$eq":["$asker_gender", "female"]},1,0]}},

"other": {"$sum":{"$cond":[{"$eq":["$asker_gender", "other"]},1,0]}},

"total": {"$sum":1},

"male_votes": {"$sum": {"$cond": [ { "$gte": [ "$asker_gender", "male" ] }, "$requestor_count", 0 ]}},

"female_votes": {"$sum": {"$cond": [ { "$gte": [ "$asker_gender", "female" ] }, "$requestor_count", 0 ]}},

"other_votes": {"$sum": {"$cond": [ { "$gte": [ "$asker_gender", "other" ] }, "$requestor_count", 0 ]}},

"total_votes": {"$sum": "$requestor_count"}

}

])