How do I create a polymorphic model with a collection_select?
- by muxe
This are my models:
class Speaker < ActiveRecord::Base
belongs_to :session, :foreign_key => :session_id, :class_name => :Session
belongs_to :speakable, :polymorphic => true
end
class Session < ActiveRecord::Base
has_many :speakers
accepts_nested_attributes_for :speakers
end
class Person < ActiveRecord::Base
has_many :speakers, :as => :speakable
end
class Company < ActiveRecord::Base
has_many :speakers, :as => :speakable
end
What I want to do now is something like this:
app/views/sessions/edit.html.erb
<% f.fields_for :speakers do |sf| %>
<p>
<%= sf.label :speaker %><br />
<%= sf.collection_select :speakable, Company.all + Person.all, :id, :full_name %>
</p>
<% end %>
But it is not working because of the polymorphic assignment. How do I approach this problem?
EDIT:
The Error is:
undefined method `base_class' for String:Class
with params being:
"speaker"=>{"speakable"=>"1063885469", "session_id"=>"1007692731"}
The value passed to speakable is the id of the Speaker/Company. Yes, this is the value I specified the collection_select to return, but how can I manage to supply both values (speakable_id and speakable_type) ?
