Exposed filters and taxonomy. How to make a redirect to a term page when exposed form submit?

Question

Let's say there are 2 vocabularies:

• Sizes (S, M, L, XL)
• Colors (Red, Green, Yellow)

pathauto sizes: /size/s, /size/m, ... pathauto colors: /color/red, /color/green, ...

There is a catalog - taxonomy/term/% view with the following filters:

• Size
• Color

If we use a filter, then the url will be like this - ?field_size_tid=2&field_color_tid=3 It's normal, when several fields are selected in the filter

But when one field is selected in the filter, the url will be like - ?field_color_tid=2 But in fact the ?field_color_tid=2 = /color/green

How to make an redirect to /color/green instead of ?field_color_tid=2 in this case after exposed form submit?

Answer 1

Here is the code that should work for your use case. Create a custom module and replace YOUR_CUSTOM_MODULE part:

function YOUR_CUSTOM_MODULE_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'views_exposed_form') {
    // Exclude cases when query contains 'field_color_tid'.
    if (strpos($_SERVER['QUERY_STRING'],'field_color_tid') === FALSE) {
      // Act only if query string contains 'field_size_tid'
      if (strpos($_SERVER['QUERY_STRING'],'field_size_tid') !== FALSE) {
        $selected_tid = $form_state['view']->exposed_input['field_size_tid'];
        // Check if such taxonomy term exists.
        $term = taxonomy_term_load($selected_tid);
        if (!empty($term)) {
          // Redirect to taxonomy page.
          $path_alias = drupal_get_path_alias('taxonomy/term/'.$selected_tid);
          drupal_goto($path_alias);
        }
      }
    }
  }
}

Answer 2

I have a slightly different solution. Hope this helps too...

• You can have as many taxonomy categories as you need as exposed filters.
• Each vocabulary may have different pathauto patterns.
• Other exposed filters should still work without any conflict.

Place this code in your custom module (CUSTOMMODULE.module):

/**
 * Implements hook_form_FORM_ID_alter().
 */
function CUSTOMMODULE_form_views_exposed_form_alter(&$form, &$form_state, $form_id) {
  // Replace `Size` filter.
  CUSTOMMODULE_jumpmenu($form, 'field_size_tid');

  // Replace `Color` filter.
  CUSTOMMODULE_jumpmenu($form, 'field_color_tid');
}

/**
 * Transform select filters into a simple jump menu.
 *
 * @param $form
 *   Nested array of form elements that comprise the form.
 * @param $field_name
 *   String representing the name of the field to be replaced.
 */
function CUSTOMMODULE_jumpmenu(&$form, $field_name) {
  if (
    isset($form[$field_name])
    && ($form[$field_name]['#type'] === 'select')
    && !empty($form[$field_name]['#options'])
  ) {
    $options = &$form[$field_name]['#options'];
    foreach ($options as $tid => $value) {
      if (is_int($tid)) {
        $path = drupal_get_path_alias('taxonomy/term/' . $tid);
        $options[url($path)] = $value;
        unset($options[$tid]);
      }
    }

    $form[$field_name]['#attributes']['onChange'] = 'javascript:if (this.value !== "All") { location.href = this.value; return false; }';

    return $form;
  }

  return [];
}

You can test this solution with this simple view:

$view = new view();
$view->name = 'example_view';
$view->description = '';
$view->tag = 'drupal_stackexchange';
$view->base_table = 'node';
$view->human_name = 'Example view';
$view->core = 7;
$view->api_version = '3.0';
$view->disabled = FALSE; 

/* Display: Master */
$handler = $view->new_display('default', 'Master', 'default');
$handler->display->display_options['title'] = 'Example view';
$handler->display->display_options['use_more_always'] = FALSE;
$handler->display->display_options['access']['type'] = 'perm';
$handler->display->display_options['cache']['type'] = 'none';
$handler->display->display_options['query']['type'] = 'views_query';
$handler->display->display_options['exposed_form']['type'] = 'basic';
$handler->display->display_options['pager']['type'] = 'full';
$handler->display->display_options['pager']['options']['items_per_page'] = '50';
$handler->display->display_options['style_plugin'] = 'table';
$handler->display->display_options['style_options']['columns'] = array(
  'title' => 'title',
  'field_color' => 'field_color',
  'field_size' => 'field_size',
);
$handler->display->display_options['style_options']['default'] = '-1';
$handler->display->display_options['style_options']['info'] = array(
  'title' => array(
    'sortable' => 0,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
  'field_color' => array(
    'sortable' => 0,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
  'field_size' => array(
    'sortable' => 0,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
);
/* Field: Content: Title */
$handler->display->display_options['fields']['title']['id'] = 'title';
$handler->display->display_options['fields']['title']['table'] = 'node';
$handler->display->display_options['fields']['title']['field'] = 'title';
$handler->display->display_options['fields']['title']['alter']['word_boundary'] = FALSE;
$handler->display->display_options['fields']['title']['alter']['ellipsis'] = FALSE;
/* Field: Content: Color */
$handler->display->display_options['fields']['field_color']['id'] = 'field_color';
$handler->display->display_options['fields']['field_color']['table'] = 'field_data_field_color';
$handler->display->display_options['fields']['field_color']['field'] = 'field_color';
/* Field: Content: Size */
$handler->display->display_options['fields']['field_size']['id'] = 'field_size';
$handler->display->display_options['fields']['field_size']['table'] = 'field_data_field_size';
$handler->display->display_options['fields']['field_size']['field'] = 'field_size';
/* Sort criterion: Content: Title */
$handler->display->display_options['sorts']['title']['id'] = 'title';
$handler->display->display_options['sorts']['title']['table'] = 'node';
$handler->display->display_options['sorts']['title']['field'] = 'title';
/* Filter criterion: Content: Published */
$handler->display->display_options['filters']['status']['id'] = 'status';
$handler->display->display_options['filters']['status']['table'] = 'node';
$handler->display->display_options['filters']['status']['field'] = 'status';
$handler->display->display_options['filters']['status']['value'] = 1;
$handler->display->display_options['filters']['status']['group'] = 1;
$handler->display->display_options['filters']['status']['expose']['operator'] = FALSE;
/* Filter criterion: Content: Type */
$handler->display->display_options['filters']['type']['id'] = 'type';
$handler->display->display_options['filters']['type']['table'] = 'node';
$handler->display->display_options['filters']['type']['field'] = 'type';
$handler->display->display_options['filters']['type']['value'] = array(
  'tshirt' => 'tshirt',
);
/* Filter criterion: Content: Size (field_size) */
$handler->display->display_options['filters']['field_size_tid']['id'] = 'field_size_tid';
$handler->display->display_options['filters']['field_size_tid']['table'] = 'field_data_field_size';
$handler->display->display_options['filters']['field_size_tid']['field'] = 'field_size_tid';
$handler->display->display_options['filters']['field_size_tid']['exposed'] = TRUE;
$handler->display->display_options['filters']['field_size_tid']['expose']['operator_id'] = 'field_size_tid_op';
$handler->display->display_options['filters']['field_size_tid']['expose']['label'] = 'Size';
$handler->display->display_options['filters']['field_size_tid']['expose']['operator'] = 'field_size_tid_op';
$handler->display->display_options['filters']['field_size_tid']['expose']['identifier'] = 'field_size_tid';
$handler->display->display_options['filters']['field_size_tid']['expose']['remember_roles'] = array(
  2 => '2',
  1 => 0,
  3 => 0,
);
$handler->display->display_options['filters']['field_size_tid']['type'] = 'select';
$handler->display->display_options['filters']['field_size_tid']['vocabulary'] = 'size';
/* Filter criterion: Content: Color (field_color) */
$handler->display->display_options['filters']['field_color_tid']['id'] = 'field_color_tid';
$handler->display->display_options['filters']['field_color_tid']['table'] = 'field_data_field_color';
$handler->display->display_options['filters']['field_color_tid']['field'] = 'field_color_tid';
$handler->display->display_options['filters']['field_color_tid']['exposed'] = TRUE;
$handler->display->display_options['filters']['field_color_tid']['expose']['operator_id'] = 'field_color_tid_op';
$handler->display->display_options['filters']['field_color_tid']['expose']['label'] = 'Color';
$handler->display->display_options['filters']['field_color_tid']['expose']['operator'] = 'field_color_tid_op';
$handler->display->display_options['filters']['field_color_tid']['expose']['identifier'] = 'field_color_tid';
$handler->display->display_options['filters']['field_color_tid']['expose']['remember_roles'] = array(
  2 => '2',
  1 => 0,
  3 => 0,
);
$handler->display->display_options['filters']['field_color_tid']['type'] = 'select';
$handler->display->display_options['filters']['field_color_tid']['vocabulary'] = 'color';

/* Display: Page */
$handler = $view->new_display('page', 'Page', 'page');
$handler->display->display_options['path'] = 'example-view';
$handler->display->display_options['menu']['type'] = 'normal';
$handler->display->display_options['menu']['title'] = 'Example view';
$handler->display->display_options['menu']['name'] = 'main-menu';

Answer 3

In the end, I did this way:

    $params = drupal_get_query_parameters();
    $redirected_fields = array('field_size_tid','field_class_tid','field_color_tid', field_brand_tid);
    $checked_fields = array();

    foreach ($params as $key => $val) {
      if ($val == '' || $val == 'All') {} else { $checked_fields[] = $key; }
    }

    if ((count($checked_fields) == 1) && (in_array($checked_fields[0],$redirected_fields)) && (count($params[$checked_fields[0]]) == 1)) {
      $selected_tid = $form_state['view']->exposed_input[$checked_fields[0]];
      if (is_array($selected_tid)) {$selected_tid = implode('',$selected_tid);}
      // Check if such taxonomy term exists.
      $term = taxonomy_term_load($selected_tid);
      //dpm($term);
      if (!empty($term)) {
        // Redirect to taxonomy page.
        $path_alias = drupal_get_path_alias('taxonomy/term/'.$selected_tid);
        drupal_goto($path_alias);
      }
    }