function apachesolr_search_form_search_form_alter in Apache Solr Search 6.2

Same name and namespace in other branches

1. 6 apachesolr_search.module \apachesolr_search_form_search_form_alter()

Implementation of hook_form_[form_id]_alter().

This adds spelling suggestions, retain filters to the search form.

File

./apachesolr_search.module, line 1195

Provides a content search implementation for node content for use with the Apache Solr search application.

Code

function apachesolr_search_form_search_form_alter(&$form, $form_state) {
  if ($form['module']['#value'] == 'apachesolr_search') {
    $form['#submit'] = array(
      'apachesolr_search_form_search_submit',
    );

    // No other modification make sense unless a query is active.
    // Note - this means that the query must always be run before
    // calling drupal_get_form('search_form').
    $apachesolr_has_searched = apachesolr_has_searched();
    $queryvalues = array();
    if ($apachesolr_has_searched) {
      $query = apachesolr_current_query();
      $queryvalues = $query
        ->get_url_queryvalues();
    }
    $form['basic']['apachesolr_search']['#tree'] = TRUE;
    $form['basic']['apachesolr_search']['queryvalues'] = array(
      '#type' => 'hidden',
      // We use JSON encoding instead of PHP serialize, since otherwise we be
      // at risk of user input being injected into the hidden string and
      // unserialized.
      '#default_value' => json_encode($queryvalues),
    );
    $form['basic']['apachesolr_search']['get'] = array(
      '#type' => 'hidden',
      '#default_value' => json_encode(array_diff_key($_GET, array(
        'q' => 1,
        'page' => 1,
        'filters' => 1,
        'solrsort' => 1,
        'retain-filters' => 1,
      ))),
    );
    if ($queryvalues || isset($form_state['post']['apachesolr_search']['retain-filters'])) {
      $form['basic']['apachesolr_search']['retain-filters'] = array(
        '#type' => 'checkbox',
        '#title' => t('Retain current filters'),
        '#default_value' => (int) isset($_GET['retain-filters']),
      );
    }
    if (variable_get('apachesolr_search_spellcheck', TRUE) && $apachesolr_has_searched && ($response = apachesolr_static_response_cache())) {

      // Get spellchecker suggestions into an array.
      if (isset($response->spellcheck->suggestions) && $response->spellcheck->suggestions) {
        $suggestions = get_object_vars($response->spellcheck->suggestions);
        if ($suggestions) {

          // Get the original query and replace words.
          $query = apachesolr_current_query();
          foreach ($suggestions as $word => $value) {
            $replacements[$word] = $value->suggestion[0];
          }
          $new_keywords = strtr($query
            ->get_query_basic(), $replacements);

          // Show only if suggestion is different than current query.
          if ($query
            ->get_query_basic() != $new_keywords) {
            $form['basic']['suggestion'] = array(
              '#prefix' => '<div class="spelling-suggestions">',
              '#suffix' => '</div>',
              '#type' => 'item',
              '#title' => t('Did you mean'),
              '#value' => l($new_keywords, $query
                ->get_path($new_keywords)),
            );
          }
        }
      }
    }
  }
}