diff --git a/views/field_collection.views.inc b/views/field_collection.views.inc index a361061..44abe8b 100644 --- a/views/field_collection.views.inc +++ b/views/field_collection.views.inc @@ -16,13 +16,70 @@ function field_collection_field_views_data($field) { // Only operate on the "field_api_field_name"_value column. if (strrpos($field_name, '_value') === (strlen($field_name) - strlen('_value'))) { $data[$table_name][$field_name]['relationship'] = array( - 'handler' => 'views_handler_relationship', + 'handler' => 'field_collection_handler_relationship', 'base' => 'field_collection_item', 'base field' => 'item_id', 'label' => t('field-collection item from !field_name', array('!field_name' => $field['field_name'])), + 'field_name' => $field['field_name'], ); } } } return $data; } + +/** + * @file + * Provide relationship handler for reference fields. + */ +class field_collection_handler_relationship extends views_handler_relationship { + + function option_definition() { + $options = parent::option_definition(); + $options['delta'] = array('default' => -1); + + return $options; + } + + /** + * Add a delta selector for multiple fields. + */ + function options_form(&$form, &$form_state) { + parent::options_form($form, $form_state); + $field = field_info_field($this->definition['field_name']); + + // Only add the delta selector if the field is multiple. + if ($field['cardinality']) { + $max_delta = ($field['cardinality'] == FIELD_CARDINALITY_UNLIMITED) ? 10 : $field['cardinality']; + + $options = array('-1' => t('All')); + for ($i = 0; $i < $max_delta; $i++) { + $options[$i] = $i + 1; + } + $form['delta'] = array( + '#type' => 'select', + '#options' => $options, + '#default_value' => $this->options['delta'], + '#title' => t('Delta'), + '#description' => t('The delta allows you to select which item in a multiple value field to key the relationship off of. Select "1" to use the first item, "2" for the second item, and so on. If you select "All", each item in the field will create a new row, which may appear to cause duplicates.'), + ); + } + } + + function ensure_my_table() { + $field = field_info_field($this->definition['field_name']); + + if (!isset($this->table_alias)) { + $join = $this->get_join(); + if ($this->options['delta'] != -1 && $field['cardinality']) { + $join->extra[] = array( + 'field' => 'delta', + 'value' => $this->options['delta'], + 'numeric' => TRUE, + ); + } + $this->table_alias = $this->query->add_table($this->table, $this->relationship, $join); + } + return $this->table_alias; + } +}