Rails Gem: How to get a gem application layout? - ruby-on-rails

Question

I'm trying to customize a Rails Gem with the default CRUD-Views.
app/views/new.html.erb:
<div class="wishlist">
<div class="row">
<div class="small-12 medium-10 large-8 small-centered columns">
<h1><%= Spree.t(:creating_wishlist) %></h1>
<%= form_for #wishlist do |f| %>
<p><%= f.label :name, Spree.t(:name) %>: <%= f.text_field :name %></p>
<p><%= f.check_box :is_private %> <%= f.label :is_private, Spree.t(:is_private) %></p>
<%= f.submit Spree.t(:create) %>
<% end -%>
</div>
</div>
</div>
I want to avoid the same div containers .wishlist .row etc. in all the other views.
How can i achieve something like:
# gem application layout:
<div class="wishlist">
<div class="row">
<div class="small-12 medium-10 large-8 small-centered columns">
<%= yield %>
</div>
</div>
</div>
When i save it as app/views/layouts/application.html.erb and render it in the gem controller with layout 'application' then the view of the main Rails Application Layout will be overwritten.
But I just want only the Gem CRUD views to get yield.

Answer 1

I could solve it with a partial that i render outside a do/end-block of the CRUD Views:
partial in app/views/base/_layout.html.erb
<div class="wishlist">
<div class="row">
<div class="hide-for-small medium-1 large-2 columns"></div>
<div class="small-12 medium-10 large-8 small-centered columns">
<%= yield %>
</div>
<div class="hide-for-small medium-1 large-2 columns"></div>
</div>
</div>
and in my CRUD Views:
<%= render :layout => 'base/layout' do %>
# content
<% end -%>