I'm not sure what you're asking. Normally you say "show title" and check "link this to content". Same thing here, Make your File view_mode whatever you want and link it to your content url. You may be asking for a Lightbox approach to showing a set of images.
If there's no option to "link to content" for this field, simply create a rewrite url in the Views Field settings to generate a link using tokens.
Now you may ask -- this isnt addressing the teaser -> full view_mode switch for the Entity (or Field?). Creating links in Views, or with the l()
function has nothing todo with View Modes ... they're just links you're making.
I find it helpful to add additional view modes to entities, I have used Entity View Modes for that.
You either setup a custom URL to your content that forces the view mode, using for instance View Mode Page or you could try to set a context or something and hand code something that forces the view mode on your destination url yourself using a custom module, for a small example:
/**
* Implementation of hook_entity_view_mode_alter().
* Change the view mode of an entity that is being displayed.
*/
function MYMODULE_entity_view_mode_alter(&$view_mode, $context) {
if ($context['entity_type'] == 'node' && $context['entity']->type == 'slang_word') {
$view_mode = 'slang_dict_word';
}
}
You could use a custom view mode to only show the Field in question -- with the custom view_mode set.
... maybe this rambling will help you or someone else :)