How to save rails_admin record to mongoid - ruby-on-rails

Question

I am struggling with understanding how to save a model to MongoDB using mongoid and rails_admin.
I've got my model:
class PictureAsset < ActiveRecord::Base
include Mongoid::Document
field :data_file_name, type: String
field :data_content_type, type: String
field :data_file_size, type: Integer
end
This was made through a generation:
bundle exec rails g model PictureAsset data_file_name:string data_content_type:string data_file_size:integer
Rails admin side loads up just fine, and I can navigate to the index page for PictureAsset.
When I try to access my custom action, asset_action, I get the following error:
undefined method `belongs_to' for #<RailsAdmin::AbstractModel:0xbf2e791>
My action looks like this:
module RailsAdmin
module Config
module Actions
class AssetAction < RailsAdmin::Config::Actions::Base
RailsAdmin::Config::Actions.register(self)
register_instance_option :collection do
true
end
register_instance_option :http_methods do
[:get, :put]
end
register_instance_option :controller do
proc do
if request.get? # EDIT
binding.pry
respond_to do |format|
format.html { render #action.template_name }
format.js { render #action.template_name, layout: false }
end
elsif request.put? # UPDATE
binding.pry
#newUserPropVal.save
end
end
end
register_instance_option :link_icon do
'icon-list-alt'
end
end
end
end
end
Can someone please explain what I'm doing wrong here?

Answer 1

Your model includes code for both ActiveRecord and Mongoid. Pick one and remove code for the other.
ActiveRecord will look like this:
class PictureAsset < ActiveRecord::Base
# No field definitions needed
end
Mongoid will look like this:
# Does not derive from anything
class PictureAsset
include Mongoid::Document
field :data_file_name, type: String
field :data_content_type, type: String
field :data_file_size, type: Integer
end
This may not solve the error you are getting but is a good start.