field_collection_handler_relationship.inc in Field collection 7

Provide relationship handler for field collection fields.

File

views/field_collection_handler_relationship.inc

<?php

/**
 * @file
 * Provide relationship handler for field collection 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.
   */
  public 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.'),
      );
    }
  }

  /**
   *
   */
  public 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;
  }

}

Classes

Name	Description
field_collection_handler_relationship	@file Provide relationship handler for field collection fields.