How can I rectify ActiveRecord::Associations::CollectionProxy - ruby-on-rails

Question

I am creating a category select dropdown to add categories to an event.
I can add them and they are showing in the form for the edit area, I can see the categories added in the backend.
When I try to show them in the views it gives me this strange error inside the layout:
<ActiveRecord::Associations::CollectionProxy::ActiveRecord_Associations_CollectionProxy_Category:0x00000102542f10>
In my setup I have got this:
views/events/index.html.erb
<%=
event.categories.each do |events|
category.name
end
%>
models/category.rb
class Category < ActiveRecord::Base
belongs_to :event
belongs_to :profile
belongs_to :classified
belongs_to :page
extend FriendlyId
friendly_id :name, use: :slugged
end
admin/category.rb
ActiveAdmin.register Category do
controller do
def permitted_params
params.permit category: [:name, :description]
end
def find_resource
scoped_collection.friendly.find(params[:id])
end
end
form do |f|
f.inputs "Name" do
f.input :name
end
f.inputs "Description" do
f.input :description, :as => :ckeditor, :label => false, :input_html => { :ckeditor => { :toolbar => 'Full', :height => 400 } }
end
f.actions
end
end
In my categories table there is an event_id column in there so it can fnd the associated event and it links to both the events table and the categories table.
Any insight into this would be great
Thanks

Answer 1

Update views/events/index.html.erb as below:
<% if event.categories.count > 0 %>
<% event.categories.each do |category| %> ## Use <% %> to evaluate ruby code
<%= category.name %> ## Use <%= %> To evaluate and show the results
<% end %>
<% end %>
In your case, <%= %> will return event.categories value which is an instance of <ActiveRecord::Associations::CollectionProxy::ActiveRecord_Associations_CollectionProxy_Category which is what you see on the rendered page.
UPDATE
OP also had foreign_key concerns. Add foreign_keys for event, profile, classified and page in categories table.