mysearch.module

<?php

/**
 * @file
 * Provides search and results render functionality.
 */

/**
 * Implements hook_theme().
 */
function mysearch_theme() {
  $templates_path = drupal_get_path('module', 'mysearch') . '/templates';
  $items = array();

  $items['mysearch_nothing_found'] = array(
    'arguments' => array('keywords' => NULL),
    'path' => $templates_path,
    'template' => 'mysearch-nothing-found',
  );

  $items['mysearch_results_list'] = array(
    'arguments' => array('keywords' => NULL, 'results' => array()),
    'path' => $templates_path,
    'template' => 'mysearch-results-list',
  );

  return $items;
}

/**
 * Implements hook_permission().
 */
function mysearch_permission() {
  return array(
    'access mysearch' => array(
      'title' => t('Access My Search'),
      'description' => t('Allows a user to access search results'),
    )
  );
}

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

  $items['mysearch/%'] = array(
    'title' => 'Search',
    'title callback' => 'mysearch_search_result_page_title',
    'title arguments' => array(1),
    'page callback' => 'mysearch_search_results_page',
    'page arguments' => array(1),
    'access arguments' => array('access mysearch'),
  );

  $items['admin/config/search/mysearch'] = array(
    'title' => 'My Search',
    'description' => 'Configure MySearch settings.',
    'file' => 'mysearch.admin.inc',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('mysearch_admin_settings'),
    'access arguments' => array('administer site configuration'),
  );

  return $items;
}

/**
 * Generates page title according to search string.
 *
 * @param $query
 *
 * @return string
 */
function mysearch_search_result_page_title($query) {
  return t('Search: @query', array('@query' => $query));
}

/**
 * Menu callback provides a simple list of nodes matching the
 * search term Example: hitting the URL:
 *   http://domain.com/mysearch/example
 * will return a list of links to nodes which have the word
 * "example" in them.
 *
 * @param string $keywords
 *
 * @return string
 */
function mysearch_search_results_page($keywords) {
  $keywords = trim($keywords);

  // Handle search string.
  if (empty($keywords)) {
    return theme('mysearch_nothing_found', array('keywords' => $keywords));
  }

  $nodes = mysearch_execute_search($keywords);
  // Nothing found by the query.
  if (!$nodes) {
    return theme('mysearch_nothing_found', array('keywords' => $keywords));
  }

  // Generate list of links.
  $links = array();
  foreach ($nodes as $node) {
    $links[] = array(
      'title' => $node->title,
      'href' => 'node/' . $node->nid
    );
  }
  $results = theme('links', array('links' => $links));

  // Output simple list of links.
  $output = theme('mysearch_results_list',
    array(
      'keywords' => $keywords,
      'results' => $results
    )
  );

  return $output;
}

/**
 * Executes search by keywords into nodes.
 *
 * @param $keywords
 *
 * @return bool|array
 */
function mysearch_execute_search($keywords) {
  $query = new EntityFieldQuery();

  // Find all active nodes and sort them by title.
  $query->entityCondition('entity_type', 'node')
    ->propertyCondition('status', 1)
    ->addTag('search_conditions')
    ->addMetaData('keywords', $keywords)
    ->propertyOrderBy('title', 'ASC');

  // If we selected some content types in the settings
  // then search inside them.
  $content_types = variable_get('mysearch_content_types', array());
  if (!empty($content_types)) {
    $types = array();
    foreach ($content_types as $type) {
      if ($type != 0) {
        $types[] = $type;
      }
    }
    if (!empty($types)) {
      $query->propertyCondition('type', $content_types, 'IN');
    }
  }

  $entities = $query->execute();
  if (empty($entities)) {
    return FALSE;
  }

  // Return array of nodes.
  $nodes = node_load_multiple(array_keys($entities['node']));
  return $nodes;
}

/**
 * Implements hook_query_TAG_alter() for search_conditions.
 *
 * @param \QueryAlterableInterface $query
 */
function mysearch_query_search_conditions_alter(QueryAlterableInterface $query) {
  $keywords = '%' . $query->getMetaData('keywords') . '%';

  // Add condtition to search by body and title.
  $query->leftJoin('field_data_body', 'b', 'node.nid = b.entity_id');
  $or = db_or()
    ->condition('b.body_value', $keywords, 'LIKE')
    ->condition('node.title', $keywords, 'LIKE');
  $query->condition($or);
}