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Artiom Neganov
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<?php
/**
* @file
* Rules integration for Drupal Commerce.
*
* @addtogroup rules
* @{
*/
/**
* Implements hook_rules_condition_info_alter().
* @todo remove "entity_exists" condition when http://drupal.org/node/1031530
* is fixed.
*/
function commerce_rules_condition_info_alter(&$conditions) {
// If the Rules module hasn't already provided "entity_exists", we add it here.
if (!isset($conditions['entity_exists'])) {
module_load_include('inc', 'rules', 'modules/data.rules');
$conditions['entity_exists'] = array(
'label' => t('Entity exists by property'),
'parameter' => array(
'type' => array(
'type' => 'text',
'label' => t('Entity type'),
'options list' => 'commerce_entity_type_options_list',
'description' => t('Specifies the type of the entity that should be fetched.'),
'restriction' => 'input',
),
'property' => array(
'type' => 'text',
'label' => t('Property'),
'description' => t('The property by which the entity is to be selected.'),
'restriction' => 'input',
),
'value' => array(
'type' => 'text',
'label' => t('Value'),
'description' => t('The property value of the entity to be fetched.'),
),
),
'group' => t('Entities'),
'base' => 'commerce_condition_entity_exists',
'module' => 'commerce',
'callbacks' => array(
'form_alter' => 'rules_action_type_form_alter',
),
);
}
}
/**
* Returns options containing entity types having the given key set in the info.
*/
function commerce_entity_type_options_list() {
$types = array();
foreach (entity_get_info() as $type => $entity_info) {
$types[$type] = $entity_info['label'];
}
return $types;
}
/**
* Condition callback: checks to see if an entity exists with the matching
* property value.
*/
function commerce_condition_entity_exists($type, $property, $value) {
$result = entity_property_query($type, $property, $value, 1);
return !empty($result);
}
/**
* Info alteration callback for the entity query action.
*/
function commerce_condition_entity_exists_info_alter(&$element_info, RulesAbstractPlugin $element) {
$element->settings += array('type' => NULL, 'property' => NULL);
if ($element->settings['type']) {
$element_info['parameter']['property']['options list'] = 'commerce_condition_entity_exists_property_options_list';
if ($element->settings['property']) {
$wrapper = entity_metadata_wrapper($element->settings['type']);
if (isset($wrapper->{$element->settings['property']}) && $property = $wrapper->{$element->settings['property']}) {
$element_info['parameter']['value']['type'] = $property->type();
$element_info['parameter']['value']['options list'] = $property->optionsList() ? 'commerce_condition_entity_exists_value_options_list' : FALSE;
}
}
}
}
/**
* Returns the options list for choosing a property of an entity type.
*/
function commerce_condition_entity_exists_property_options_list(RulesAbstractPlugin $element) {
$element->settings += array('type' => NULL);
if ($element->settings['type']) {
$properties = entity_get_all_property_info($element->settings['type']);
return rules_extract_property($properties, 'label');
}
}
/**
* Returns the options list specified for the chosen property.
*/
function commerce_condition_entity_exists_value_options_list(RulesAbstractPlugin $element) {
// Get the possible values for the selected property.
$element->settings += array('type' => NULL, 'property' => NULL);
if ($element->settings['type'] && $element->settings['property']) {
$wrapper = entity_metadata_wrapper($element->settings['type']);
if (isset($wrapper->{$element->settings['property']}) && $property = $wrapper->{$element->settings['property']}) {
return $property->optionsList('view');
}
}
}
/**
* Custom validate callback for data query action.
*/
function commerce_condition_entity_exists_validate($element) {
if (!isset($element->settings['type'])) {
throw new RulesEvaluationException('Invalid type specified.', array(), array($element, 'parameter', 'type'));
}
if (!isset($element->settings['property'])) {
throw new RulesEvaluationException('Invalid property specified.', array(), array($element, 'parameter', 'property'));
}
}
/**
* @}
*/