View inheritance and rendering in engines

[Linus Pettersson]

Hi

I'm creating a mountable admin engine (like Active Admin but not as advanced) using Inherited Resources. Let's call it AdminFoo.

In my main app I mount it with mount AdminFoo::Engine, at: '/admin' in my routes file.

Let's say I have the following structure in my engine:

AdminFoo

app

- views

- - admin_foo

- - - resource

- - - - index.html.erb

- - - shared

- - - - _nav_bar.html.erb

If I want to render _nav_bar in my index.html.erb file I need to reference it from the view root, like this: render 'admin_foo/shared/nav_bar' 

Now I want to override the nav_bar partial from my main app like this:

MainApp

app

- views

- - admin

- - - shared

- - - - _nav_bar.html.erb

However, this doesn't work since it looks for the file in 'admin_foo/shared/nav_bar'

I don't want to create an admin_foo folder in my main app since I already have the admin folder which the engine mounted under. This works for controllers, for instance I have this structure for my custom admin controllers and its views:

MainApp

app

- controllers

- - admin

- - - Admin::BarController < AdminFoo::ResourceController

- views

- - admin

- - - bar

- - - - index.html.erb

It is weird to have both admin AND admin_foo folders in my main app.