How to prevent a View from rendering via a hook?

Question

I want to prevent an attached view from running depending on some coding parameters.

I've tried using hook_views_pre_view() to prevent it from running, but I can't figure out what options to set on the view to accomplish that. Tweaking attached or rendered doesn't seem to do anything.

function ding_eresource_views_pre_view(&$view, &$display_id, &$args) {
  if ($view->name == 'eresource_list' && $display_id == 'attachment_1') {
    // Prevent rendering if parent view has some option set.
    if (!empty($view->old_view[1]->barr)) {
      // This does not work. How can it be done?
      $view->attached = FALSE;
      $view->rendered = TRUE;
    }
  }
}

How can it be done?

Answer 1

$view->executed = TRUE; worked for me but I'm not sure it is a correct way to stop Views from rendering.

Answer 2

Wanted to do similar but just $view->executed = TRUE; made the query in the view still run. Looking at view::build(), I understood you need the following code, to prevent anything running further in the view (displays and query).

$view->executed = TRUE;
$view->built = TRUE;

To make it clearer, the code you should use is the following one.

function ding_eresource_views_pre_view(&$view, &$display_id, &$args) {
  if ($view->name == 'eresource_list' && $display_id == 'attachment_1') {
    // Prevent rendering if parent view has some option set.
    if (!empty($view->old_view[1]->barr)) {
      // This does not work. How can it be done?
      $view->executed = TRUE;
      $view->built = TRUE;
    }
  }
}

Answer 3

Options for hook_views_pre_render:

$view->result = array();

That destroys the array, preventing any data from rendering.

Or, the plain PHP option:

die();