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Drupal example source code file (docs.php)

This example Drupal source code file (docs.php) is included in the DevDaily.com "Drupal Source Code Warehouse" project. The intent of this project is to help you "Learn Drupal by Example".

PHP - Drupal tags/keywords

array, default, false, field, function, handler, node, page, php, sort, title, true, view

The docs.php Drupal example source code

<?php
// $Id: docs.php,v 1.16.4.10 2010/12/18 08:02:37 dereine Exp $
/**
 * @file
 * This file contains no working PHP code; it exists to provide additional documentation
 * for doxygen as well as to document hooks in the standard Drupal manner.
 */

/**
 * @mainpage Views 2 API Manual
 *
 * Much of this information is actually stored in the advanced help; please
 * check the API topic. This help will primarily be aimed at documenting
 * classes and function calls.
 *
 * An online version of the advanced help API documentation is available from:
 * @link http://views-help.doc.logrus.com/help/views/api @endlink
 *
 * Topics:
 * - @ref view_lifetime
 * - @ref views_hooks
 * - @ref views_handlers
 * - @ref views_plugins
 * - @ref views_templates
 */

/**
 * @page view_lifetime The life of a view
 *
 * This page explains the basic cycle of a view and what processes happen.
 */

/**
 * @page views_handlers About Views' handlers
 *
 * This page explains what views handlers are, how they're written, and what
 * the basic conventions are.
 *
 * - @ref views_field_handlers
 * - @ref views_sort_handlers
 * - @ref views_filter_handlers
 * - @ref views_argument_handlers
 * - @ref views_relationship_handlers
 */

/**
 * @page views_plugins About Views' plugins
 *
 * This page explains what views plugins are, how they're written, and what
 * the basic conventions are.
 *
 * - @ref views_display_plugins
 * - @ref views_style_plugins
 * - @ref views_row_plugins
 */

/**
 * @defgroup views_hooks Views' hooks
 * @{
 * Hooks that can be implemented by other modules in order to implement the
 * Views API.
 */

/**
 * Describe table structure to Views.
 *
 * This hook should be placed in MODULENAME.views.inc and it will be auto-loaded.
 * This must either be in the same directory as the .module file or in a subdirectory
 * named 'includes'.
 *
 * The full documentation for this hook is in the advanced help.
 * @link http://views-help.doc.logrus.com/help/views/api-tables @endlink
 */
function hook_views_data() {
  // This example describes how to write hook_views_data() for the following
  // table:
  //
  // CREATE TABLE example_table (
  //   nid INT(11) NOT NULL         COMMENT 'Primary key; refers to {node}.nid.',
  //   plain_text_field VARCHAR(32) COMMENT 'Just a plain text field.',
  //   numeric_field INT(11)        COMMENT 'Just a numeric field.',
  //   boolean_field INT(1)         COMMENT 'Just an on/off field.',
  //   timestamp_field INT(8)       COMMENT 'Just a timestamp field.',
  //   PRIMARY KEY(nid)
  // );

  // The 'group' index will be used as a prefix in the UI for any of this
  // table's fields, sort criteria, etc. so it's easy to tell where they came
  // from.
  $data['example_table']['table']['group'] = t('Example table');

  // Define this as a base table. In reality this is not very useful for
  // this table, as it isn't really a distinct object of its own, but
  // it makes a good example.
  $data['example_table']['table']['base'] = array(
    'field' => 'nid',
    'title' => t('Example table'),
    'help' => t("Example table contains example content and can be related to nodes."),
    'weight' => -10,
  );

  // This table references the {node} table.
  // This creates an 'implicit' relationship to the node table, so that when 'Node'
  // is the base table, the fields are automatically available.
  $data['example_table']['table']['join'] = array(
    // Index this array by the table name to which this table refers.
    // 'left_field' is the primary key in the referenced table.
    // 'field' is the foreign key in this table.
    'node' => array(
      'left_field' => 'nid',
      'field' => 'nid',
    ),
  );

  // Next, describe each of the individual fields in this table to Views. For
  // each field, you may define what field, sort, argument, and/or filter
  // handlers it supports. This will determine where in the Views interface you
  // may use the field.

  // Node ID field.
  $data['example_table']['nid'] = array(
    'title' => t('Example content'),
    'help' => t('Some example content that references a node.'),
    // Because this is a foreign key to the {node} table. This allows us to
    // have, when the view is configured with this relationship, all the fields
    // for the related node available.
    'relationship' => array(
      'base' => 'node',
      'field' => 'nid',
      'handler' => 'views_handler_relationship',
      'label' => t('Example node'),
    ),
  );

  // Example plain text field.
  $data['example_table']['plain_text_field'] = array(
    'title' => t('Plain text field'),
    'help' => t('Just a plain text field.'),
    'field' => array(
      'handler' => 'views_handler_field',
      'click sortable' => TRUE,
    ),
    'sort' => array(
      'handler' => 'views_handler_sort',
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_string',
    ),
    'argument' => array(
      'handler' => 'views_handler_argument_string',
    ),
  );

  // Example numeric text field.
  $data['example_table']['numeric_field'] = array(
    'title' => t('Numeric field'),
    'help' => t('Just a numeric field.'),
    'field' => array(
      'handler' => 'views_handler_field_numeric',
      'click sortable' => TRUE,
     ),
    'filter' => array(
      'handler' => 'views_handler_filter_numeric',
    ),
    'sort' => array(
      'handler' => 'views_handler_sort',
    ),
  );

  // Example boolean field.
  $data['example_table']['boolean_field'] = array(
    'title' => t('Boolean field'),
    'help' => t('Just an on/off field.'),
    'field' => array(
      'handler' => 'views_handler_field_boolean',
      'click sortable' => TRUE,
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_boolean_operator',
      'label' => t('Published'),
      'type' => 'yes-no',
      // use boolean_field = 1 instead of boolean_field <> 0 in WHERE statment
      'use equal' => TRUE,
    ),
    'sort' => array(
      'handler' => 'views_handler_sort',
    ),
  );

  // Example timestamp field.
  $data['example_table']['timestamp_field'] = array(
    'title' => t('Timestamp field'),
    'help' => t('Just a timestamp field.'),
    'field' => array(
      'handler' => 'views_handler_field_date',
      'click sortable' => TRUE,
    ),
    'sort' => array(
      'handler' => 'views_handler_sort_date',
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_date',
    ),
  );

  return $data;
}

/**
 * Alter table structure.
 *
 * You can add/edit/remove to existing tables defined by hook_views_data().
 *
 * This hook should be placed in MODULENAME.views.inc and it will be auto-loaded.
 * This must either be in the same directory as the .module file or in a subdirectory
 * named 'includes'.
 *
 * The full documentation for this hook is in the advanced help.
 * @link http://views-help.doc.logrus.com/help/views/api-tables @endlink
 */
function hook_views_data_alter(&$data) {
  // This example alters the title of the node: nid field for the admin.
  $data['node']['nid']['title'] = t('Node-Nid');

  // This example adds a example field to the users table
  $data['users']['example_field'] = array(
    'title' => t('Example field'),
    'help' => t('Some examüple content that references a user'),
    'handler' => 'hook_handlers_field_example_field',
  );

  // This example changes the handler of the node title field.
  // In this handler you could do stuff, like preview of the node, when clicking the node title.

  $data['node']['title']['handler'] = 'modulename_handlers_field_node_title';
}


/**
 * The full documentation for this hook is now in the advanced help.
 *
 * This hook should be placed in MODULENAME.views.inc and it will be auto-loaded.
 * This must either be in the same directory as the .module file or in a subdirectory
 * named 'includes'.
 *
 * This is a stub list as a reminder that this needs to be doc'd and is not used
 * in views anywhere so might not be remembered when this is formally documented:
 * - style: 'even empty'
 */
function hook_views_plugins() {
  // example code here
}

/**
 * Alter existing plugins data, defined by modules.
 */
function hook_views_plugins_alter(&$plugins) {
  // Add apachesolr to the base of the node row plugin.
  $plugins['row']['node']['base'][] = 'apachesolr';
}

/**
 * Register View API information. This is required for your module to have
 * its include files loaded; for example, when implementing
 * hook_views_default_views().
 *
 * @return
 *   An array with the following possible keys:
 *   - api:  (required) The version of the Views API the module implements.
 *   - path: (optional) If includes are stored somewhere other than within
 *       the root module directory or a subdirectory called includes, specify
 *       its path here.
 *   - template path: (optional) A path where the module has stored it's views template files.
 *        When you have specificed this key views automatically uses the template files for the views.
 *        You can use the same naming conventions like for normal views template files.
 */
function hook_views_api() {
  return array(
    'api' => 2,
    'path' => drupal_get_path('module', 'example') . '/includes/views',
  );
}

/**
 * This hook allows modules to provide their own views which can either be used
 * as-is or as a "starter" for users to build from.
 *
 * This hook should be placed in MODULENAME.views_default.inc and it will be
 * auto-loaded. This must either be in the same directory as the .module file
 * or in a subdirectory named 'includes'.
 *
 * The $view->disabled boolean flag indicates whether the View should be
 * enabled or disabled by default.
 *
 * @return
 *   An associative array containing the structures of views, as generated from
 *   the Export tab, keyed by the view name. A best practice is to go through
 *   and add t() to all title and label strings, with the exception of menu
 *   strings.
 */
function hook_views_default_views() {
  // Begin copy and paste of output from the Export tab of a view.
  $view = new view;
  $view->name = 'frontpage';
  $view->description = t('Emulates the default Drupal front page; you may set the default home page path to this view to make it your front page.');
  $view->tag = t('default');
  $view->base_table = 'node';
  $view->api_version = 2;
  $view->disabled = FALSE; // Edit this to true to make a default view disabled initially
  $view->display = array();
    $display = new views_display;
    $display->id = 'default';
    $display->display_title = t('Defaults');
    $display->display_plugin = 'default';
    $display->position = '1';
    $display->display_options = array (
    'style_plugin' => 'default',
    'style_options' =>
    array (
    ),
    'row_plugin' => 'node',
    'row_options' =>
    array (
      'teaser' => 1,
      'links' => 1,
    ),
    'relationships' =>
    array (
    ),
    'fields' =>
    array (
    ),
    'sorts' =>
    array (
      'sticky' =>
      array (
        'id' => 'sticky',
        'table' => 'node',
        'field' => 'sticky',
        'order' => 'ASC',
      ),
      'created' =>
      array (
        'id' => 'created',
        'table' => 'node',
        'field' => 'created',
        'order' => 'ASC',
        'relationship' => 'none',
        'granularity' => 'second',
      ),
    ),
    'arguments' =>
    array (
    ),
    'filters' =>
    array (
      'promote' =>
      array (
        'id' => 'promote',
        'table' => 'node',
        'field' => 'promote',
        'operator' => '=',
        'value' => '1',
        'group' => 0,
        'exposed' => false,
        'expose' =>
        array (
          'operator' => false,
          'label' => '',
        ),
      ),
      'status' =>
      array (
        'id' => 'status',
        'table' => 'node',
        'field' => 'status',
        'operator' => '=',
        'value' => '1',
        'group' => 0,
        'exposed' => false,
        'expose' =>
        array (
          'operator' => false,
          'label' => '',
        ),
      ),
    ),
    'items_per_page' => 10,
    'use_pager' => '1',
    'pager_element' => 0,
    'title' => '',
    'header' => '',
    'header_format' => '1',
    'footer' => '',
    'footer_format' => '1',
    'empty' => '',
    'empty_format' => '1',
  );
  $view->display['default'] = $display;
    $display = new views_display;
    $display->id = 'page';
    $display->display_title = t('Page');
    $display->display_plugin = 'page';
    $display->position = '2';
    $display->display_options = array (
    'defaults' =>
    array (
      'access' => true,
      'title' => true,
      'header' => true,
      'header_format' => true,
      'header_empty' => true,
      'footer' => true,
      'footer_format' => true,
      'footer_empty' => true,
      'empty' => true,
      'empty_format' => true,
      'items_per_page' => true,
      'offset' => true,
      'use_pager' => true,
      'pager_element' => true,
      'link_display' => true,
      'php_arg_code' => true,
      'exposed_options' => true,
      'style_plugin' => true,
      'style_options' => true,
      'row_plugin' => true,
      'row_options' => true,
      'relationships' => true,
      'fields' => true,
      'sorts' => true,
      'arguments' => true,
      'filters' => true,
      'use_ajax' => true,
      'distinct' => true,
    ),
    'relationships' =>
    array (
    ),
    'fields' =>
    array (
    ),
    'sorts' =>
    array (
    ),
    'arguments' =>
    array (
    ),
    'filters' =>
    array (
    ),
    'path' => 'frontpage',
  );
  $view->display['page'] = $display;
    $display = new views_display;
    $display->id = 'feed';
    $display->display_title = t('Feed');
    $display->display_plugin = 'feed';
    $display->position = '3';
    $display->display_options = array (
    'defaults' =>
    array (
      'access' => true,
      'title' => false,
      'header' => true,
      'header_format' => true,
      'header_empty' => true,
      'footer' => true,
      'footer_format' => true,
      'footer_empty' => true,
      'empty' => true,
      'empty_format' => true,
      'use_ajax' => true,
      'items_per_page' => true,
      'offset' => true,
      'use_pager' => true,
      'pager_element' => true,
      'use_more' => true,
      'distinct' => true,
      'link_display' => true,
      'php_arg_code' => true,
      'exposed_options' => true,
      'style_plugin' => false,
      'style_options' => false,
      'row_plugin' => false,
      'row_options' => false,
      'relationships' => true,
      'fields' => true,
      'sorts' => true,
      'arguments' => true,
      'filters' => true,
    ),
    'relationships' =>
    array (
    ),
    'fields' =>
    array (
    ),
    'sorts' =>
    array (
    ),
    'arguments' =>
    array (
    ),
    'filters' =>
    array (
    ),
    'displays' =>
    array (
      'default' => 'default',
      'page' => 'page',
    ),
    'style_plugin' => 'rss',
    'style_options' =>
    array (
      'description' => '',
    ),
    'row_plugin' => 'node_rss',
    'row_options' =>
    array (
      'item_length' => 'default',
    ),
    'path' => 'rss.xml',
    'title' => t('Front page feed'),
  );
  $view->display['feed'] = $display;
  // End copy and paste of Export tab output.

  // Add view to list of views to provide.
  $views[$view->name] = $view;

  // ...Repeat all of the above for each view the module should provide.

  // At the end, return array of default views.
  return $views;
}

/**
 * This hook is called right before all default views are cached to the
 * database. It takes a keyed array of views by reference.
 */
function hook_views_default_views_alter(&$views) {
  if (isset($views['taxonomy_term'])) {
    $views['taxonomy_term']->set_display('default');
    $views['taxonomy_term']->display_handler->set_option('title', 'Categories');
  }
}

/**
 * Stub hook documentation
 *
 * This hook should be placed in MODULENAME.views_convert.inc and it will be auto-loaded.
 * This must either be in the same directory as the .module file or in a subdirectory
 * named 'includes'.
 */
function hook_views_convert() {
  // example code here
}

/**
 * Stub hook documentation
 */
function hook_views_query_substitutions() {
  // example code here
}

/**
 * This hook is called at the very beginning of views processing,
 * before anything is done.
 *
 * Adding output to the view can be accomplished by placing text on
 * $view->attachment_before and $view->attachment_after.
 */
function hook_views_pre_view(&$view, &$display_id, &$args) {
  // example code here
}

/**
 * This hook is called right before the build process, but after displays
 * are attached and the display performs its pre_execute phase.
 *
 * Adding output to the view can be accomplished by placing text on
 * $view->attachment_before and $view->attachment_after.
 */
function hook_views_pre_build(&$view) {
  // example code here
}

/**
 * This hook is called right after the build process. The query is
 * now fully built, but it has not yet been run through db_rewrite_sql.
 *
 * Adding output to the view can be accomplished by placing text on
 * $view->attachment_before and $view->attachment_after.
 */
function hook_views_post_build(&$view) {
  // example code here
}

/**
 * This hook is called right before the execute process. The query is
 * now fully built, but it has not yet been run through db_rewrite_sql.
 *
 * Adding output to the view can be accomplished by placing text on
 * $view->attachment_before and $view->attachment_after.
 */
function hook_views_pre_execute(&$view) {
  // example code here
}

/**
 * This hook is called right after the execute process. The query has
 * been executed, but the pre_render() phase has not yet happened for
 * handlers.
 *
 * Adding output to the view can be accomplished by placing text on
 * $view->attachment_before and $view->attachment_after. Altering the
 * content can be achieved by editing the items of $view->result.
 */
function hook_views_post_execute(&$view) {
  // example code here
}

/**
 * This hook is called right before the render process. The query has
 * been executed, and the pre_render() phase has already happened for
 * handlers, so all data should be available.
 *
 * Adding output to the view can be accomplished by placing text on
 * $view->attachment_before and $view->attachment_after. Altering the
 * content can be achieved by editing the items of $view->result.
 *
 * This hook can be utilized by themes.
 */
function hook_views_pre_render(&$view) {
  // example code here
}

/**
 * Post process any rendered data.
 *
 * This can be valuable to be able to cache a view and still have some level of
 * dynamic output. In an ideal world, the actual output will include HTML
 * comment based tokens, and then the post process can replace those tokens.
 *
 * Example usage. If it is known that the view is a node view and that the
 * primary field will be a nid, you can do something like this:
 *
 * <!--post-FIELD-NID-->
 *
 * And then in the post render, create an array with the text that should
 * go there:
 *
 * strtr($output, array('<!--post-FIELD-1-->', 'output for FIELD of nid 1');
 *
 * All of the cached result data will be available in $view->result, as well,
 * so all ids used in the query should be discoverable.
 *
 * This hook can be utilized by themes.
 */
function hook_views_post_render(&$view, &$output, &$cache) {

}

/**
 * Stub hook documentation
 *
 * This hook should be placed in MODULENAME.views.inc and it will be auto-loaded.
 * This must either be in the same directory as the .module file or in a subdirectory
 * named 'includes'.
 *
 */
function hook_views_query_alter(&$view, &$query) {
  // example code here
}

/**
 * This hook should be placed in MODULENAME.views.inc and it will be auto-loaded.
 * This must either be in the same directory as the .module file or in a subdirectory
 * named 'includes'.
 *
 * Alter the links that appear over a view. They are in a format suitable for
 * theme('links').
 *
 * Warning: $view is not a reference in PHP4 and cannot be modified here. But it IS
 * a reference in PHP5, and can be modified. Please be careful with it.
 *
 * @see theme_links
 */
function hook_views_admin_links_alter(&$links, $view) {
  // example code here
}

/**
 * This hook should be placed in MODULENAME.views.inc and it will be auto-loaded.
 * This must either be in the same directory as the .module file or in a subdirectory
 * named 'includes'.
 *
 * Alter the rows that appear with a view, which includes path and query information.
 * The rows are suitable for theme('table').
 *
 * Warning: $view is not a reference in PHP4 and cannot be modified here. But it IS
 * a reference in PHP5, and can be modified. Please be careful with it.
 *
 * @see theme_table
 */
function hook_views_preview_info_alter(&$rows, $view) {
  // example code here
}

/**
 * @}
 */

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