NoMethodError (undefined method `find' for nil:NilClass) with polymorphic belongs_to

[Jianbo Cui]

I got this error in my controller after bundle update, can someone confirm this? did I do something wrong?

Thanks

class FlagsController < Api::V1::ResourceController
  belongs_to :deal, :polymorphic => true

  resources :deals do
    resources :comments
    resources :images
    resources :flags
  end

Started POST "/api/v1/deals/56/flags.json?clearence=1" for 192.168.1.56 at 2014-06-11 17:32:56 +1200
Processing by Api::V1::FlagsController#create as JSON
Parameters: {"deal_id"=>"56", "content"=>"asdfad", "auth_token"=>"SoodcyUosyf8ZKY7L7ZN", "clearence"=>"1", "flag"=>{"content"=>"test"}}

[Jianbo Cui]

Roll back to version 1.4.1 works.

[Paul Kuruvilla]

@jianbo - Looks like this is related to #325. #367 looks like it solves the problem. For now, what you could do is specify the parent_class manually like this :

class FlagsController < Api::V1::ResourceController
  belongs_to :deal, :polymorphic => true, :parent_class => Deal
end

[Phlegx Systems]

@rohitpaulk add parent class works for me! Thank you!

[Paul Kuruvilla]

@phlegx - You're welcome!

[Anton Ilin]

@rohitpaulk polymorphic: true in your example doesn't have much sense, because you have only one possible parent association.

module Admin
  class PositionsController < BaseController
    belongs_to :employee, :assignment, polymorphic: true
  end
end

In this case you can't use parent_class option to point to the correct parent class

[Paul Kuruvilla]

@bronislav - True :) I had just copied the OP's code and added the parent class part.

[Rafael Mendonça França]

Could you check with current master? It may be fixed by #376