fix issue #15

app/views/admin/assets/_form.html.haml

@@ -1,6 +1,6 @@
 - content_for :head do
   = include_javascripts :edit_custom_fields, :assets
-  = include_stylesheets :custom_fields
+  = include_stylesheets :fancybox
 
 = f.inputs :name => :information do
   = f.input :name

app/views/admin/custom_fields/_custom_form.html.haml

@@ -11,7 +11,7 @@
     - elsif field.category?
       = form.custom_input field._alias.to_sym, :label => field.label, :hint => field.hint, :css => 'toggle' do
         = form.select field._name.to_sym, field.ordered_category_items.collect { |item| [item.name, item.id] }
-        %button.button.light.edit-categories-link{ :type => 'button', :'data-url' => edit_admin_custom_field_path(parent.model_name.underscore, parent.slug, field) }
+        %button.button.light.edit-categories-link{ :type => 'button', :'data-url' => edit_admin_custom_field_path(parent.class.model_name.underscore, parent.slug, field) }
           %span!= t('.edit_categories')
     - elsif field.boolean?
       = form.custom_input field._alias.to_sym, :label => field.label, :hint => field.hint, :css => 'toggle' do

app/views/admin/custom_fields/edit_category.html.haml

@@ -4,7 +4,7 @@
 
     %p!= t('.help')
 
-    = semantic_form_for @field, :as => :custom_field, :url => admin_custom_field_url(@parent.model_name.underscore, @parent.slug, @field) do |f|
+    = semantic_form_for @field, :as => :custom_field, :url => admin_custom_field_url(@parent.class.model_name.underscore, @parent.slug, @field) do |f|
       = f.foldable_inputs :name => t('.collection_label'), :class => 'editable-list off' do
         - @field.ordered_category_items.each do |item|
           = f.fields_for :category_items, item, :child_index => item._index do |g|

config/assets.yml

@@ -89,9 +89,6 @@ stylesheets:
   fancybox:
     - public/stylesheets/admin/plugins/fancybox.css
     - public/stylesheets/admin/fancybox_changes.css
-  custom_fields:
-    - public/stylesheets/admin/plugins/fancybox.css
-    - public/stylesheets/admin/box.css
   installation:
     - public/stylesheets/admin/installation.css
   editable_elements: