Views 2 - Embed a View inside Empty Text of another View

Question

I want to embed a View (or a display of a View) inside another display of View when these view has no results. I figure out that I can embed a View inside the 'Empty Text' filed. I must say that I can show some php echo "hello world"; using this 'Empty Text' filed, but when I try to embed a View, I can not embed a another View or display of View.

this is one example that I used, but without results:

$viewName = 'test_view';
$display_id = 'page_1';
print views_embed_view($viewName, $display_id);

Answer 1

In D7, Views 3 you can enable "NO RESULTS BEHAVIOR" which is under the "Advanced" tab. Here you can add "Global: View area" (or just "hello world" as a text area for testing) which will allow you to display a view when there isn't any results.

If you want this is code, you can always export the View after it is configured and see how it was done.

Answer 2

nMill's answer is great for Views 3.

I put together a solution that involves a bit more work for Views 2 (and there might be an even better way to do this). I'm using hook_views_pre_render and the views_embed_view function to do this.

In your custom module, insert

function mymodule_views_pre_render(&$view) {
    switch($view->name) {
        case 'parent_view_name':
            if (empty($view->result)) {
                            $attachment = views_embed_view('view_to_insert', 'default');
                $view->attachment_after = $attachment;
            }
        break;
    }
}

Clear the cache and your new view should appear if there are no results in the parent view.

Answer 3

This has been added in Views 3 and can be found in 'No results behavior' where you can add 'View area' which would be inserted on empty results.

Here is example how to do it programatically by using hook_views_pre_view:

/**
 * Implements hook_views_pre_view().
 */
function MYMODULE_views_pre_view(&$view, &$display_id, &$args) {
  if ($view->name == 'my_view') {
    // Unset: Global: Text area
    $view->display_handler->set_option('empty', NULL);

    /* Programatically update the 'No results behavior' by inserting another view. */

    // Example 1
    $options = array(
        'id' => 'view',
        'table' => 'views',
        'field' => 'view',
        'empty' => TRUE,
        'view_to_insert' => 'new_view:page',
    );
    $view->display_handler->set_option('empty', array('view' => $options));

    // Example 2
    $view->set_item_option($display_id, 'empty', 'view', 'id', 'view');
    $view->set_item_option($display_id, 'empty', 'view', 'table', 'views');
    $view->set_item_option($display_id, 'empty', 'view', 'field', 'view');
    $view->set_item_option($display_id, 'empty', 'view', 'empty', TRUE);
    $view->set_item_option($display_id, 'empty', 'view', 'view_to_insert', 'new_view:page');
  }
}