PHP Answers

Drupal 8: Entity browser custom form field

2017-12-07T13:26:00.001-08:00

<?php 
form['entity_browser'] = [
      '#type' => 'container',
      //'#parents' => ['content_link_wrapper'],
      //'#weight' => -3,
      'widget' => [
        '#title' => t('Content Link'),
        '#description' => t('The content to be linked in the menu.'),
        '#field_name' => 'content_link',
        '#field_parents' => [],
        '#required' => TRUE,
        '#parents' => ['content_link'],
        '#tree' => TRUE,
        '#id' => 'edit-content-link',
        '#type' => 'details',
        '#open' => TRUE,
        'target_id' => [
          '#type' => 'hidden',
          '#id' => 'edit-content-link-target-id',
          '#attributes' => [
            'id' => 'edit-content-link-target-id',
          ],
          '#default_value' => "",
          '#ajax' => [
            'callback' => [
              'Drupal\entity_browser\Plugin\Field\FieldWidget\EntityReferenceBrowserWidget',
              'updateWidgetCallback',
            ],
            'wrapper' => 'edit-content-link',
            'event' => 'entity_browser_value_updated',
          ],
        ],
        'entity_browser' => [
          '#type' => 'entity_browser',
          '#entity_browser' => 'experience_cms_entity_browser',
          //'#cardinality' => 1,
          //'#selection_mode' => 'selection_edit',
          //'#default_value' => [],
          '#entity_browser_validators' => [
            'entity_type' => [
              'type' => 'node',
            ],
          ],
          '#custom_hidden_id' => 'edit-content-link-target-id',
          '#process' => [
            [
              '\Drupal\entity_browser\Element\EntityBrowserElement',
              'processEntityBrowser',
            ],
            [
              'Drupal\entity_browser\Plugin\Field\FieldWidget\EntityReferenceBrowserWidget',
              'processEntityBrowser',
            ],
          ]
        ],
        'current' => [
          '#theme_wrappers' => ['container'],
          '#attributes' => [
            'class' => 'entities-list',
          ],
          'items' => [],
        ],
        '#after_build' => [
          [
            'Drupal\entity_browser\Plugin\Field\FieldWidget\EntityReferenceBrowserWidget',
            'afterBuild',
          ],
        ],
        '#attached' => [
          'library' => [
            'entity_browser/entity_reference',
          ],
        ],
      ],
    ];
?>

OR easy one

<?php 
form['entity_browser'] = [
      '#type' => 'container',
      '#id' => 'edit-content-link-wrapper',
      '#attributes' => [
        'id' => 'edit-content-link-wrapper',
      ],
      'target_id' => [
        '#type' => 'hidden',
        '#id' => 'edit-content-link-target-id',
        '#attributes' => [
          'id' => 'edit-content-link-target-id',
        ],
        '#default_value' => "",
        '#ajax' => [
          'callback' => [
            'Drupal\entity_browser\Plugin\Field\FieldWidget\EntityReferenceBrowserWidget',
            'updateWidgetCallback',
          ],
          'wrapper' => 'edit-content-link-wrapper',
          'event' => 'entity_browser_value_updated',
        ],
      ],
      'entity_browser' => [
        '#type' => 'entity_browser',
        '#entity_browser' => 'experience_cms_entity_browser',
        '#entity_browser_validators' => [
          'entity_type' => [
            'type' => 'node',
          ],
        ],
        '#custom_hidden_id' => 'edit-content-link-target-id',
        '#process' => [
          [
            '\Drupal\entity_browser\Element\EntityBrowserElement',
            'processEntityBrowser',
          ],
          [
            'Drupal\entity_browser\Plugin\Field\FieldWidget\EntityReferenceBrowserWidget',
            'processEntityBrowser',
          ],
        ]
      ],
    ];

Enter into docker container using GITBash

2017-11-07T21:53:00.001-08:00

# find the name of the machine created.
docker-machine ls
docker-machine env --shell cmd <nameOfTheMachine>
docker machine ssh <nameOfTheMachine>

Then


Use the command docker exec -it <container name> /bin/bash to get a bash shell in the container
Generically, use docker exec -it <container name> <command> to execute whatever command you

Display error message on Ajax form submit Drupal 7

2016-04-11T01:42:00.000-07:00

Display error message on Ajax form submit Drupal 7

To Display error message after ajax form submit you need to take care the following points.

 $form['submit_button'] = array(  
     '#type' => 'submit',  
     '#value' => t('Save'),  
     '#ajax' => array(  
       'callback' =>'form_ajax_callback'  
       'wrapper' => form-html-id-name ,  
       'event' => 'click',  
     )  
   );

In the wrapper you should take the form-id.
For example if your form name is abc_form then generated html form id will be abc-from. Otherwise errors will not get displayed.

Add same form multiple times on page Drupal 7

2016-04-11T00:44:00.005-07:00

Show same form multiple times on page

To display custom form multiple times on same page you need to use hook_forms . Below example

  $form = drupal_get_form("workflow_tab_form_$node->nid", $node, $workflow->wid, $states, $current);  
 /**  
  * Implements hook_forms().  
  *  
  * Allows the workflow tab form to be repeated multiple times on a page.  
  * See http://drupal.org/node/1970846.  
  */  
 function workflow_forms($form_id, $args) {  
  $forms = array();  
  if (substr($form_id, 0, 18) == 'workflow_tab_form_') {  
   $forms[$form_id] = array('callback' => 'workflow_tab_form');  
  }  
  return $forms;  
 }

Or you can refer https://api.drupal.org/api/drupal/modules%21system%21system.api.php/function/hook_forms/7

Drupal 8: How to create user with role programatically

2016-01-19T21:59:00.001-08:00

Drupal 8: How to create user with role programatically



$values = array(
'field_first_name' => 'test',
'fieldt_last_name' => 'g',
'name' => 'test123',
'mail' => 'test@test.com',
'roles' => array('administrator'),
'pass' => 'password',
'status' => 1,
);
$account = entity_create('user', $values);
$account->save();

MySQL 5.7.7 - Access denied

2016-01-04T23:27:00.003-08:00

You get the 'Access denied' message while login into mysql server after successful installation of MySQL 5.7.X on Centos 7/RHEL.

Here is the solution.

Note: before trying following instruction please do not start mysql service otherwise steps will not work.

MySQL 5.7.X or higher generates a temporary random password.
Fire the blow command from console or refer URL https://dev.mysql.com/doc/refman/5.7/en/data-directory-initialization-mysqld.html
shell> bin/mysqld --initialize --user=mysql
shell> bin/mysqld --initialize-insecure --user=mysql
Password is stored in mysql error log file, located at /var/log/mysqld.log
use below command to see the password:
shell > sudo grep 'temporary password' /var/log/mysqld.log
you will get password like '/vHb/aao-6sX'
Try to login with above output password.
And change password using below command
ALTER USER 'root'@'localhost' IDENTIFIED BY '#*Admin123456';
Query OK, 0 rows affected (0.01 sec)
Password strength should be good enough otherwise system will not accept it.
Now you can start mysql server using below command
shell > sudo systemctl start mysqld.service

Drupal 8: show all errors or enable debug mode

2015-12-14T04:15:00.000-08:00

To show all errors on Drupal 8 page, do the following steps.

add below code into sites/default/settings.php

 $config['system.logging']['error_level'] = 'verbose';

Clear cache from admin/config/development/performance
You are done!!!

Drupal 8: Uninstall or Disable module manually

2015-12-14T01:32:00.001-08:00

Follow below steps in uninstall Broken module from Database

Find record 'core.extension' in `config` table.
Remove module name entry from serialize string which is stored in blob field like below example

 $data = unserialize('a:2:{s:6:"module";a:52:{s:14:"automated_cron";i:0;s:10:"basic_auth";i:0;s:5:"block";i:0;s:13:"block_content";i:0;s:10:"breakpoint";i:0;s:8:"ckeditor";i:0;s:5:"color";i:0;s:7:"comment";i:0;s:6:"config";i:0;s:7:"contact";i:0;s:10:"contextual";i:0;s:8:"datetime";i:0;s:5:"dblog";i:0;s:13:"my_module";i:0;s:13:"doctrine_base";i:0;s:18:"dynamic_page_cache";i:0;s:6:"editor";i:0;s:5:"field";i:0;s:16:"field_collection";i:0;s:8:"field_ui";i:0;s:4:"file";i:0;s:6:"filter";i:0;s:3:"hal";i:0;s:4:"help";i:0;s:7:"history";i:0;s:5:"image";i:0;s:4:"link";i:0;s:7:"menu_ui";i:0;s:4:"node";i:0;s:5:"oauth";i:0;s:7:"options";i:0;s:10:"page_cache";i:0;s:4:"path";i:0;s:4:"push";i:0;s:9:"quickedit";i:0;s:3:"rdf";i:0;s:4:"rest";i:0;s:6:"restui";i:0;s:6:"search";i:0;s:13:"serialization";i:0;s:8:"shortcut";i:0;s:6:"system";i:0;s:8:"taxonomy";i:0;s:4:"text";i:0;s:7:"toolbar";i:0;s:4:"tour";i:0;s:6:"update";i:0;s:4:"user";i:0;s:8:"views_ui";i:0;s:17:"menu_link_content";i:1;s:5:"views";i:10;s:8:"standard";i:1000;}s:5:"theme";a:4:{s:6:"stable";i:0;s:6:"classy";i:0;s:6:"bartik";i:0;s:5:"seven";i:0;}}');  
 unset($data['module']['my_module']);  
 echo (serialize($data));

Save the table data again.
Follow the same step into `cache_config` table.
Remove php folder from sites/default/files/
You are done!!!

Zend Auth example with extra columun

2015-04-21T22:20:00.000-07:00

  $request = $this->getRequest();  
       if ($request->isPost()) {  
         $params = $this->filterInput($request->getParams());  
         $db = Zend_Db_Table_Abstract::getDefaultAdapter();  
         $auth = Zend_Auth::getInstance();  
         $authAdapter = new Zend_Auth_Adapter_DbTable($db, 'mdl_registration_user');  
         $authAdapter->setIdentityColumn('uname')  
             ->setCredentialColumn('password');  
         $authAdapter->setIdentity($params['uname'])  
             ->setCredential(md5($params['password']));  
         // extra validation  
         $authAdapter->getDbSelect()->where('countrycode = +'.$params['country']);  
         $result = $auth->authenticate($authAdapter);  
         if ($result->isValid()) {  
           $user = $authAdapter->getResultRowObject();  
           $auth->getStorage()->write($user);  
           $flash_obj->addMessage('You have loged-in successfully');  
           $this->_redirect('index/index');  
         } else {  
           $this->view->messages = "Invalid username or password. Please try again.";  
           return ;  
         }  
       }

Function to add variable to drupal template

2012-10-23T08:09:00.006-07:00

Use following code to add new variables to Drupal template(page.tpl.php,node.tpl.php etc).

function dpg_preprocess(&$variables, $hook){
$variables['newvar'] = "New var";
}

function phptemplate_preprocess_node(&$vars){
$vars['newvar'] = "New var";
}

PHP 5.4.0 new features:

2012-09-20T21:37:00.002-07:00

Support for traits has been added.
Short array syntax has been added, e.g. $a = [1, 2, 3, 4]; or $a = ['one' => 1, 'two' => 2, 'three' => 3, 'four' => 4];.
Function array dereferencing has been added, e.g. foo()[0].
Closures now support $this.
<?= is now always available, regardless of the short_open_tag php.ini option.
Class member access on instantiation has been added, e.g. (new Foo)->bar().
Class::{expr}() syntax is now supported.
Binary number format has been added, e.g. 0b001001101.
Improved parse error messages and improved incompatible arguments warnings.
The session extension can now track the upload progress of files.
Built-in development web server in CLI mode.

Add new regions into Drupal theme

2012-09-13T21:36:00.003-07:00

Add the following line into your theme .info file to add new regions.
To do this go to site->all->themes->your_theme
open your_theme.info and add regions like this
regions[your_region] = Your region description

Now go to page.tpl.php
and add the following code where you want to add region

<?php print render($page['your_region']); ?>

Magento: Add Javascript and CSS to Home Page Only

2012-09-12T23:26:00.000-07:00

Magento allow you to modify the layout XML specific to that page. So, all you need to do is :

1. Login into Magento admin
2. Go to CMS->static pages
3. Edit home page
4. Go to design tab, in Custom design tab, Add the following code into "Custom Layout Update XML" field to add css or javascript file.
<reference name="head">
<action method="addItem">
    <type>skin_js</type><script>js/home.js</script>
   </action>
<action method="addItem">
    <type>skin_css</type><script>css/home.css</script>
   </action>
</reference>

Insert category product into static page magento

2012-09-12T21:47:00.002-07:00

To insert category product into static page in magento follow these simple steps.
1. Create a category from Catalog->Manage Categories called "Featured Category".
2. Set this category as active and set "no" to "Include in Navigation Menu" label.
3. Go to display settings tab.
4. Select display mode as static page only.
5. Create static page from CMS->static pages
6. Add the following code into content tab

<code>{{block type="catalog/product_list" category_id="35" template="catalog/product/list.phtml"}}
</code>

How to change home page contents in Magento

2012-09-12T21:04:00.000-07:00

To change home page content in Magento do the following steps.
1. Loged in admin of magento.
2. Go to "CMS->pages" menu.
3. Edit "Home page" list item.

Now you can edit home page as per requirement.

How enable template path hints in magento

2012-09-12T21:02:00.000-07:00

To enable template path hints in Magento use to following steps.
1. Go to admin->System->configuration.
2. Select "default store view" from "Current Configuration Scope" dropdown from left side menu.
3. Click on developer link on left side menu.
4. Click on debug tab.
5. Uptick "use website" checkbox and select "Yes" in "Template Path Hints" rundown.

Congrats you have done it.