function ctools_entity_from_field_context

Return a new context based on an existing context.

File

plugins/relationships/entity_from_field.inc, line 156

Code

function ctools_entity_from_field_context($context, $conf) {
    // Perform access check on current logged in user.
    global $user;
    // Clone user object so account can be passed by value to access callback.
    $account = clone $user;
    $delta = !empty($conf['delta']) ? intval($conf['delta']) : 0;
    $plugin = $conf['name'];
    list($plugin, $plugin_name) = explode(':', $plugin);
    list($field_name, $from_entity, $to_entity) = explode('-', $plugin_name);
    // If unset it wants a generic, unfilled context, which is just NULL.
    $entity_info = entity_get_info($from_entity);
    if (empty($context->data) || !isset($context->data->{$entity_info['entity keys']['id']})) {
        return ctools_context_create_empty('entity:' . $to_entity, NULL);
    }
    if (isset($context->data->{$entity_info['entity keys']['id']})) {
        // Load the entity.
        $id = $context->data->{$entity_info['entity keys']['id']};
        $entity = entity_load($from_entity, array(
            $id,
        ));
        $entity = $entity[$id];
        if ($items = field_get_items($from_entity, $entity, $field_name)) {
            if (isset($items[$delta])) {
                ctools_include('fields');
                $to_entity_info = entity_get_info($to_entity);
                $plugin_info = ctools_get_relationship($conf['name']);
                $to_entity_id = $items[$delta][$plugin_info['source key']];
                $loaded_to_entity = entity_load($to_entity, array(
                    $to_entity_id,
                ));
                $loaded_to_entity = array_shift($loaded_to_entity);
                // Pass current user account and entity type to access callback.
                if (isset($to_entity_info['access callback']) && function_exists($to_entity_info['access callback']) && !call_user_func($to_entity_info['access callback'], 'view', $loaded_to_entity, $account, $to_entity)) {
                    return ctools_context_create_empty('entity:' . $to_entity, NULL);
                }
                else {
                    // Send it to ctools.
                    return ctools_context_create('entity:' . $to_entity, $to_entity_id);
                }
            }
            else {
                // In case that delta was empty.
                return ctools_context_create_empty('entity:' . $to_entity, NULL);
            }
        }
    }
}