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我有一個使用active_model_serializers 0.10的api-only rails應用程序。我在我的ApplicationController中有current_user屬性，並試圖從我的序列化程序訪問它以限制顯示的數據。我可以通過將其作爲手動範圍來傳遞，如ExerciseSerializer.new(@exercise, scope: current_user)，但希望有一個通用的解決方案。在ActiveModel :: Serializer中包含current_user
這是我ApplicationController：
class ApplicationController < ActionController::API
include Response
include ExceptionHandler
serialization_scope :view_context
# called before every action on controllers
before_action :authorize_request
attr_reader :current_user
def check_access_rights(id)
@current_user.id == id
end
def check_admin_rights
if [email protected]_user.admin
raise(ExceptionHandler::AuthenticationError, Message.unauthorized)
end
end
private
# Check for valid request token and return user
def authorize_request
@current_user = (AuthorizeApiRequest.new(request.headers).call)[:user]
end
end
這是我的串行之一：
class ExerciseSerializer < ActiveModel::Serializer
attributes :id, :name, :description, :image_url, :note
delegate :current_user, :to => :scope
has_many :exercise_details
end
而且這是我介紹的對象：
def json_response(object, status = :ok)
render json: object, status: status
end
當序列化，我得到出現以下錯誤：
** Module::DelegationError Exception: ExerciseSerializer#current_user delegated to scope.current_user, but scope is nil:
當我嘗試從串行內訪問current_user，我得到以下錯誤：
*** NameError Exception: undefined local variable or method `current_user' for #<ExerciseSerializer:0x007ff15cd2e9c0>
很顯然範圍nil。
任何想法都會有所幫助。謝謝！