entityreference.feeds.inc in Entity reference 7
Feeds mapping implementation for the Entity reference module
File
entityreference.feeds.incView source
<?php
/**
* @file
* Feeds mapping implementation for the Entity reference module
*/
/**
* Implements hook_feeds_processor_targets_alter().
*
* @see FeedsNodeProcessor::getMappingTargets().
*/
function entityreference_feeds_processor_targets_alter(&$targets, $entity_type, $bundle_name) {
foreach (field_info_instances($entity_type, $bundle_name) as $name => $instance) {
$info = field_info_field($name);
if ($info['type'] == 'entityreference') {
// We don't use ":guid" in key, not to break existing configurations.
$targets[$name] = array(
'name' => check_plain($instance['label'] . t(' (Entity reference by Feeds GUID)')),
'callback' => 'entityreference_feeds_set_target',
'description' => t('The field instance @label of @id matched by Feeds GUID.', array(
'@label' => $instance['label'],
'@id' => $name,
)),
);
$targets[$name . ':url'] = array(
'name' => check_plain($instance['label'] . t(' (Entity reference by Feeds URL)')),
'callback' => 'entityreference_feeds_set_target',
'description' => t('The field instance @label of @id matched by Feeds URL.', array(
'@label' => $instance['label'],
'@id' => $name,
)),
'real_target' => $name,
);
$targets[$name . ':etid'] = array(
'name' => check_plain($instance['label'] . t(' (Entity reference by Entity ID)')),
'callback' => 'entityreference_feeds_set_target',
'description' => t('The field instance @label of @id matched by Entity ID.', array(
'@label' => $instance['label'],
'@id' => $name,
)),
'real_target' => $name,
);
$targets[$name . ':label'] = array(
'name' => check_plain($instance['label'] . t(' (Entity reference by Entity label)')),
'callback' => 'entityreference_feeds_set_target',
'description' => t('The field instance @label of @id matched by Entity label.', array(
'@label' => $instance['label'],
'@id' => $name,
)),
'real_target' => $name,
);
}
}
}
/**
* Entity reference callback for mapping.
*
* When the callback is invoked, $target contains the name of the field the
* user has decided to map to and $value contains the value of the feed item
* element the user has picked as a source.
*
* @param $source
* A FeedsSource object.
* @param $entity
* The entity to map to.
* @param $target
* The target key on $entity to map to.
* @param $value
* The value to map. MUST be an array.
*/
function entityreference_feeds_set_target($source, $entity, $target, $value) {
// Don't do anything if we weren't given any data.
if (empty($value)) {
return;
}
// Assume that the passed in value could really be any number of values.
if (is_array($value)) {
$values = $value;
}
else {
$values = array(
$value,
);
}
// Determine the field we are matching against.
if (strpos($target, ':') === FALSE) {
$match_key = 'guid';
}
else {
list($target, $match_key) = explode(':', $target, 2);
}
// Get some useful field information.
$info = field_info_field($target);
if ($match_key == 'label') {
$handler = entityreference_get_selection_handler($info);
}
// Set the language of the field depending on the mapping.
$language = isset($mapping['language']) ? $mapping['language'] : LANGUAGE_NONE;
// Iterate over all values.
$iterator = 0;
$field = isset($entity->{$target}) ? $entity->{$target} : array();
foreach ($values as $value) {
// Only process if this value was set for this instance.
if ($value) {
switch ($match_key) {
case 'guid':
case 'url':
// Fetch the entity ID resulting from the mapping table look-up.
$entity_id = db_select('feeds_item', 'fi')
->fields('fi', array(
'entity_id',
))
->condition($match_key, $value, '=')
->execute()
->fetchField();
break;
case 'etid':
$entity_id = $value;
break;
case 'label':
$options = $handler
->getReferencableEntities($value, '=');
if ($options) {
$options = reset($options);
$etids = array_keys($options);
// Use the first matching entity.
$entity_id = reset($etids);
}
else {
$entity_id = NULL;
}
break;
}
/*
* Only add a reference to an existing entity ID if there exists a
* mapping between it and the provided GUID. In cases where no such
* mapping exists (yet), don't do anything here. There may be a mapping
* defined later in the CSV file. If so, and the user re-runs the import
* (as a second pass), we can add this reference then. (The "Update
* existing nodes" option must be selected during the second pass.)
*/
if ($entity_id) {
// Assign the target ID.
$field[$language][$iterator]['target_id'] = $entity_id;
}
else {
/* there is no $entity_id, no mapping */
/*
* Feeds stores a hash of every line imported from CSVs in order to
* make the import process more efficient by ignoring lines it's
* already seen. We need to short-circuit this process in this case
* because users may want to re-import the same line as an update later
* when (and if) a map to a reference exists. So in order to provide
* this opportunity later, we need to destroy the hash.
*/
unset($entity->feeds_item->hash);
$source
->log('entityreference', t('No existing entity found for entity @source_id entityreference to source entity @value', array(
'@source_id' => $entity->feeds_item->entity_id,
'@value' => $value,
)));
}
}
// Break out of the loop if this field is single-valued.
if ($info['cardinality'] == 1) {
break;
}
$iterator++;
}
// Add the field to the entity definition.
$entity->{$target} = $field;
}
Functions
Name | Description |
---|---|
entityreference_feeds_processor_targets_alter | Implements hook_feeds_processor_targets_alter(). |
entityreference_feeds_set_target | Entity reference callback for mapping. |