No serializer found for resource

[marucjmar]

AMS version -> 0.10.0.rc3

AMS version -> 0.9.3 All ok

[NullVoxPopuli]

can you post the model and serializer you expect it to use, and the controller action which tries to render with the serializer?
thanks!

[bf4]

also, the full backtrace, ruby version, rand rails version (this should really all be in CONTRIBUTING.md but appears to be missing)

[bf4]

This is an expected situation for primitive associations, so we'll need more info to see why you're getting it. (It's handled later)

[marucjmar]

model

class Picture < ActiveRecord::Base
    validates :title, presence: true, length: {minimum: 5 , maximum: 100 }
    validates :url, presence: true
    validates :user_id, presence: true

    has_many :picture_comments
    belongs_to :user
end

Serializer

class PicturesSerializer < ActiveModel::Serializer
   attributes :id, :title, :url, :user_id, :rating,  :created_at

   has_one :user, serializer: SimpleUserSerializer
end

SimpleUserSerializer

class SimpleUserSerializer < ActiveModel::Serializer
   attributes  :id, :nick, :avatar

end

grape controller

module API
  module V1
    class Pictures < Grape::API
      include API::V1::Defaults

      format :json
      formatter :json, Grape::Formatter::ActiveModelSerializers

      resource :pictures do
        desc "Return pictures paginate"
        paginate per_page: 10, max_per_page: 200
        params do
          optional :top, type: Boolean
          optional :from_date, type: Date
          optional :to_date, type: Date
        end
        get "", root: :pictures, each_serializer: PicturesSerializer do
           ...
            pictures =  Picture.all.order(created_at: :desc)
            paginate pictures 
          end
        end
...

[bf4]

still missing #1250 (comment)

also, the full backtrace, ruby version, and rails version (this should really all be in CONTRIBUTING.md but appears to be missing)

the fact that you're using Grape and not Rails is incredibly important to share. The gem you're using is out of date https://github.com/jrhe/grape-active_model_serializers/blob/ca9c8faaa99727300ff21419aa20471ac27eed42/lib/grape-active_model_serializers/formatter.rb#L15-L25

[bf4]

I'm going to close this, since it's a grape gem issue. I'll help you with a PR there if you want, or even a monkey patch

[bf4]

@rails-api/ams I'd be up for adding a grape integration to AMS. It would be easier for end-users to track changes, and shouldn't include much code or otherwise involve much

[dripisforever]

is there any news? @marucjmar

[asampatoor]

I am getting the same issue. Can anyone help me with this?

[marucjmar]

@strivemag, @asampatoor Too old topic, I do not remember

[LeonidFilbert]

@strivemag, @asampatoor add this to your config.ru: require 'grape-active_model_serializers'

[asampatoor]

@LeonidFilbert Thank you for the response. But that didn't fix the issue.