islandora_collection_search.module

<?php

/**
 * @file
 * Miscellaneous hook implementations.
 */

/**
 * Implements hook_block_info().
 */
function islandora_collection_search_block_info() {
  $blocks['islandora_collection_search'] = array(
    'info' => t('Islandora Collection Search'),
    'cache' => DRUPAL_NO_CACHE,
  );
  return $blocks;
}

/**
 * Implements hook_block_view().
 */
function islandora_collection_search_block_view($delta = '') {
  $block = array();
  switch ($delta) {
    case 'islandora_collection_search':
      if (user_access('search islandora solr')) {
        module_load_include('inc', 'islandora_collection_search', 'includes/search.form');
        $block['subject'] = t('Islandora Collection Search');
        $block['content'] = drupal_get_form('islandora_collection_search_form');
      }
      break;
  }
  return $block;
}

/**
 * Implements hook_islandora_solr_query().
 *
 * Adds a collection as a filter if it is defined in the url params.
 */
function islandora_collection_search_islandora_solr_query($islandora_solr_query) {
  // Exit early if the collection pid isn't set in the url params.
  if (!isset($_GET['cp'])) {
    return;
  }

  // Grab the collection pid and add it as a solr query filter.
  $collection_pid = $_GET['cp'];
  $ancestor_field = variable_get('islandora_collection_search_ancestor_field', 'ancestors_ms');
  $filter = format_string('!field:"!value"', array(
    '!field' => $ancestor_field,
    '!value' => $collection_pid,
  ));
  $islandora_solr_query->solrParams['fq'][] = $filter;
}

/**
 * Implements hook_form_alter().
 *
 * Adds a submit handler to any form that can potentially alter the object
 * hierarchy (e.g. changing parents, etc...).
 */
function islandora_collection_search_form_alter(&$form, &$form_state, $form_id) {
  switch ($form_id) {
    case 'islandora_basic_collection_migrate_children_form':
    case 'islandora_basic_collection_share_children_form':
    case 'islandora_basic_collection_delete_children_form':
      $form['#submit'][] = 'islandora_collection_search_collection_form_submit';
      break;
  }
}

/**
 * Implements hook_menu().
 */
function islandora_collection_search_menu() {
  $items = array();

  $items['admin/islandora/tools/collection_search'] = array(
    'title' => 'Collection Search',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('islandora_collection_search_admin_form'),
    'access arguments' => array('administer site configuration'),
    'file' => 'includes/admin.form.inc',
  );

  return $items;
}

/**
 * Re-indexes all children of the object(s) manipulated by a form.
 *
 * @param array $form
 *   Array of drupal form api elements.
 * @param array $form_state
 *   Array representing the form state.
 */
function islandora_collection_search_collection_form_submit(&$form, &$form_state) {
  // Grab the initial list of children that are being migrated from the form.
  $children = array_keys(array_filter($form_state['values']['children']));
  module_load_include('inc', 'islandora_collection_search', 'includes/batch');
  batch_set(islandora_collection_search_reindex_descendants_batch($children));
}

/**
 * Implements hook_form_FORMID_alter().
 */
function islandora_collection_search_form_islandora_solr_advanced_search_form_alter(&$form, &$form_state) {
  if (variable_get('islandora_collection_search_advanced_search_alter', FALSE)) {
    module_load_include('inc', 'islandora_collection_search', 'includes/utilities');
    $default_options = array(
      'all' => t('All collections'),
    );
    $collections = islandora_collection_search_retrieve_searchable_collections($default_options, FALSE);
    $form['collections'] = array(
      '#type' => 'select',
      '#options' => $collections,
      '#weight' => 5,
    );
    $form['controls']['#weight'] = 6;
    $form['#submit'][] = 'islandora_collection_search_append_collection_pid';
  }
}

/**
 * Submit handler which appends the collection PID to the query.
 *
 * @param array $form
 *   An array representing a form within Drupal.
 * @param array $form_state
 *   An array representing the Drupal form state.
 */
function islandora_collection_search_append_collection_pid($form, &$form_state) {
  if ($form_state['values']['collections'] != 'all') {
    $form_state['redirect'][1]['query']['cp'] = $form_state['values']['collections'];
  }
}