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