msankhala

<?php
 function themename_menu_link(&$variables) {
  $element = $variables['element'];
  $sub_menu = '';

  $element['#attributes']['data-menu-parent'] = $element['#original_link']['menu_name'] . '-' . $element['#original_link']['depth'];

  if ($element['#below']) {
    $sub_menu = drupal_render($element['#below']);
  }

msankhala

//First, let’s analyze the cache_set() parameters -

<?php
function cache_set($cid, $data, $bin = 'cache', $expire = CACHE_PERMANENT) {
  /* ... */
}
?>
//Example #1 (using a simple cache)

<?php

msankhala

//Both of the examples use the following database schema -

<?php
  // use the following table schema
  $schema['my_table'] = array(
    'description' => 'My table.',
    'fields' => array(
      'id' => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE,),
      'value' => array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '',),
      'options' => array('type' => 'text', 'serialize' => TRUE, 'default' => '',),

msankhala

//Example: Exportables

//Here’s a simple example illustrating collecting exportables using aggregate hooks and static variables -

<?php
  function my_module_data_get_all() {
    $data = &drupal_static(__FUNCTION__);
    // check for existing $data from previous function call
    if (!isset($data)) {
      // pull all $data from database

msankhala

//Load functions

//The following menu item receives a single argument to the URL, an ID for some data -

<?php
  $item['my-module/%my_module_data'] = array(
    'title' => 'My path',
    'page callback' => 'my_module_path',
    'page arguments' => array(1),
  );

msankhala

//Example #1 (simple, PHP method)

<?php
  function i_get_called_way_too_much() {
    static $static_var;
    if (!isset($static_var)) {
      // generate contents of static variable
      $static_var = 'some value';
    }
    return $static_var;

msankhala

// Example #1 (simple invoking)
<?php
  // will call all modules implementing hook_hook_name
  module_invoke_all('hook_name');
?>

//Example #2 (aggregate results)

<?php
  $result = array();

msankhala

<?php
 $node->field_number[LANGUAGE_NONE][0]['value'] 
?>
//Using metadata wrappers from the entity module we can access this information like so:

<?php
 $node_wrapper->field_number->value(); 
?>
 
 // How about an example of making things consistent? All Drupal entities have a label of some sort. A string that can be treated as the canonical human readable name of an entity. All nodes have a title property and all user accounts have a name property. Given a standard Drupal entity it can be hard to know which property should be treated as the label. Metadata wrappers provide us with a consistent way of getting at this kind of information for any entity.

msankhala

<?php
 /**
 * Implements hook_field_views_data_alter().
 */
function MYMODULE_field_views_data_alter(&$result, $field, $module) {
  if ($field['field_name'] == 'FIELD_NAME') {
    $name = $field['field_name'];
    foreach ($result as $table_name => $table_data) {
      if (isset($table_data[$field['field_name']]['field'])) {
 // HERE modifying filter handler. But we can modify sort, field, contextual filter and argument handler in same way

msankhala

<?php
 /**
 * Implements hook_FORM_ID_alter().
 */
 function custom_form_views_exposed_form_alter(&$form, &$form_state, $form_id){
  if ($form_id == 'views_exposed_form' && $form_state['view']->name == 'VIEWS_NAME') {
    // Unset the title and body filter info so that it doesn't print any label.
    unset($form['#info']['filter-title']);
    unset($form['#info']['filter-body_value']);
    // Set the #printed = TRUE on title and body render element to escape them from being print.