Module hook to add_js to any entity type?

Question

I want a hook that will let me conditionally add js/css to the page depending on the type of entity.

Since I am putting this in a module I cannot use a theme hook (because if the theme already defines the hook then Drupal will crash).

Ultimately, I want to do something like:

// SWTICH BY ENTITY TYPE
switch($entity_type){
    case 'eform':  // entity forms
        drupal_add_js( $theme_path . '/scripts/ajax_forms.js');
        break;
    case 'view':  // view pages (making this one up)
        drupal_add_js( $theme_path . '/scripts/fancybox.js');
        break;
}
// SWTICH BY CONTENT TYPE
switch($content_type){
    case 'services':
        drupal_add_js( $theme_path . '/scripts/fancybox.js');
        break;
}
// SWITCH BY NID
switch($nid){
    case '293': // Homepage
        drupal_add_js( $theme_path . '/js/global.js');
        break;
}

Right now I'm using hook_node_view to check content type & nid. Works great for nodes, but doesn't help me with non-nodes.

Answer 1

hook_entity_view() should do the trick

Act on entities being assembled before rendering.

e.g.

function MYMODULE_entity_view($entity, $type, $view_mode, $langcode) {
  switch ($type) {
    case 'node':
      ...
      break;
  }
}