nodehierarchy_multiparent.module in Node Hierarchy 7.4

Allow multiple-parent Node Hierarchy.

File

nodehierarchy_multiparent/nodehierarchy_multiparent.module

<?php

/**
 * @file
 * Allow multiple-parent Node Hierarchy.
 */

/**
 * Implements hook_nodehierarchy_node_parent_form_items_alter().
 */
function nodehierarchy_multiparent_nodehierarchy_node_parent_form_items_wrapper_alter(&$form, &$form_state, $node) {
  $multiparent = variable_get('nodehierarchy_multiparent_' . $node->type, 0);

  // Normalize the weights for multiple items. Also rename the first parent.
  $weight = $id = 0;
  foreach (element_children($form['nodehierarchy_parents']) as $id) {
    if ($weight == 0) {
      $form['nodehierarchy_parents'][$id]['#title'] = t('Primary parent');
    }
    $form['nodehierarchy_parents'][$id]['pweight']['#value'] = $weight++;
  }
  if ($multiparent) {

    // Add blank parent fields for additional parents.
    $extras = isset($form_state['nodehierarchy_parent_extras']) ? $form_state['nodehierarchy_parent_extras'] : 0;
    for ($i = 0; $i < $extras; $i++) {
      $id++;
      $parent = _nodehierarchy_default_record();
      $form['nodehierarchy_parents'][$id] = _nodehierarchy_node_parent_form_items($node, $parent, $id);
      $form['nodehierarchy_parents'][$id]['#title'] = t('New parent');
      $form['nodehierarchy_parents'][$id]['pweight']['#value'] = $weight++;
    }

    // Add a button to allow more parents to be added.
    $form['add_more'] = array(
      '#type' => 'submit',
      '#value' => t('Add another parent'),
      '#attributes' => array(
        'class' => array(
          'field-add-more-submit',
        ),
      ),
      '#limit_validation_errors' => array(),
      '#submit' => array(
        'nodehierarchy_multiparent_node_form_add_parent_submit',
      ),
    );
  }
}

/**
 * Submit the form after 'add parent' has been clicked. Don't save anything just rebuild the node and the new parent will show up as normal.
 */
function nodehierarchy_multiparent_node_form_add_parent_submit($form, &$form_state) {
  $form_state['rebuild'] = TRUE;

  // Increase the number of extra parents in the formstate.
  $form_state['nodehierarchy_parent_extras'] = isset($form_state['nodehierarchy_parent_extras']) ? $form_state['nodehierarchy_parent_extras'] + 1 : 1;
}

/**
 * Implements hook_nodehierarchy_node_type_settings_form().
 */
function nodehierarchy_multiparent_nodehierarchy_node_type_settings_form($type) {
  module_load_include('inc', 'nodehierarchy', 'nodehierarchy.admin');
  $form = array();
  if (nodehierarchy_node_can_be_child($type)) {
    $form['nodehierarchy_multiparent'] = array(
      '#type' => 'checkbox',
      '#title' => t('Multiple Parents'),
      '#default_value' => variable_get('nodehierarchy_multiparent_' . $type, 0),
      '#description' => t('This node type can have multiple parents.'),
    );
  }
  return $form;
}

Functions

Name	Description
nodehierarchy_multiparent_nodehierarchy_node_parent_form_items_wrapper_alter	Implements hook_nodehierarchy_node_parent_form_items_alter().
nodehierarchy_multiparent_nodehierarchy_node_type_settings_form	Implements hook_nodehierarchy_node_type_settings_form().
nodehierarchy_multiparent_node_form_add_parent_submit	Submit the form after 'add parent' has been clicked. Don't save anything just rebuild the node and the new parent will show up as normal.