How to use current_user in Serializer

[byhbt]

Problem:

class ThirdPartySerializer < ActiveModel::Serializer
  attributes :session_id, :token, :started_at

  def token
    additional_data = {
      role: current_user.role,
      userId: current_user.id
    }.to_json

    THIRD_PARTY.generate_token(object.session_id, data: additional_data)
  end
end

In this context, the current_user is undefined.

Solution:

Add a private get current user to the serializer.

class ThirdPartySerializer < ActiveModel::Serializer
  #....(existing code)

  private

  def current_user_fallback
    @current_user_fallback ||= @instance_options[:current_user] || current_user
  end
end

Lesson:

• https://stackoverflow.com/questions/47809626/how-to-use-devise-current-user-in-active-model-serializers
• How i can pass current_user now to serializer? rails-api/active_model_serializers#624 (comment)
• https://github.com/rails-api/active_model_serializers/blob/0-10-stable/docs/general/serializers.md#controller-authorization-context