Support for all entity types (ie not just node)

This is working for me. I think checking base_tables is fine, although I'm pretty sure there's a way to pull the entity_type from the view itself, so you might want to dive into into that recursive beast.

This worked for me with users

@ohthehugemanatee, Thanks for the patch and thanks @mcarbone & @Jackinloadup for testing. I will commit the patch this weekend.

I'm getting the following error using this patch for user entityreference. I'm not sure if it's related to this patch, the module, or the fact that I have 2 widgets on the same page.

Fatal error: Cannot create references to/from string offsets nor overloaded objects in /DRUPAL/includes/common.inc on line 6443

This might need to be a new issue, but figured I'd start here since I only get that error when attempting to assign users with the widget.

@andyg5000, can you try it with just one widget on the edit page?

@davidseth,
I originally had an entityreference(node) and entityreference(user) widget on the same page. I'm only having problem with the user one when attempting to assign a user to the reference. This happens with only the 1 user reference as well. It looks like it's not even getting to the validate handlers before it crashes. I'm debugging now and will post an update as soon as I can.

Now it's happening with both widgets. The values that are getting passed to drupal_array_get_nested_value (in field/field.default.inc) are as follows:

[field_assigned_to] => Array (
            [und] => 185,160
        )

 [field_assigned_groups] => Array (
            [und] => 4098
        )

when they should be (roughly):

[field_assigned_to] => Array (
            [und] => array(
                 [0] => array(
                 [target_id] => 185
              )
           )
        )

I see that the validate handlers should set this structure up, but for some reason they aren't firing.

Doh! ignore my issues. I'm dealing with an inherited project and some other module was fubaring the field_assigned_to field before submission. It's working great now!

@andyg5000 Great, well it has worked well for others as well. I will go ahead and commit this now.

Cheers,

David

Alright patch committed. Thanks @ohthehugemanatee and everyone else for testing.