关于SO的大多数问题似乎都过时了,无法解决这个问题。
我想序列化一个模型。这是我的序列化器的样子 -
class AssignmentSerializer < ActiveModel::Serializer
belongs_to :lesson, class_name: "Lesson"
attributes :id, :student_id, :tutor, :name, :start_date, :end_date, :description, :lesson
end
这适用于您希望在此表单中序列化单个对象的情况。
def index
if current_user&.student?
@assignments = Assignment.where(student_id: current_user.id)
@assignments_due = Assignment.find_due(current_user)
@submitted_assignments = Assignment.find_submitted(current_user)
elsif current_user&.tutor?
@assignments = Assignment.where(tutor_id: current_user.id)
end
respond_to do |format|
format.json { render json: @assignments }
end
end
但是,当我想序列化多个对象时,它不起作用:
def index
if current_user&.student?
@assignments = Assignment.where(student_id: current_user.id)
@assignments_due = Assignment.find_due(current_user)
@submitted_assignments = Assignment.find_submitted(current_user)
elsif current_user&.tutor?
@assignments = Assignment.where(tutor_id: current_user.id)
end
respond_to do |format|
format.json { render json: {
assignments: @assignments,
assignments_due: @assignments_due,
submitted_assignments: @submitted_assignments
}, each_serializer: AssignmentSerializer
}
end
end
我通过遵循我在这个documentation中看到的不同方法尝试了多种方法,但似乎都没有。
知道我可能做错了吗?
respond_to do |format|
format.json { render json: {
assignments: @assignments.as_json,
assignments_due: @assignments_due.as_json,
submitted_assignments: @submitted_assignments.as_json
}, each_serializer: AssignmentSerializer
}
end
显然,答案一直都在那里,这有点令人困惑。在我分享的同一链接中,我找到了答案。 This link
所以我就是这样做的,使用ActiveModelSerializers::SerializableResource.new
def index
if current_user&.student?
@assignments = Assignment.where(student_id: current_user.id)
@assignments_due = Assignment.find_due(current_user)
@submitted_assignments = Assignment.find_submitted(current_user)
elsif current_user&.tutor?
@assignments = Assignment.where(tutor_id: current_user.id)
end
respond_to do |format|
format.json { render json: {
assignments: ActiveModelSerializers::SerializableResource.new(@assignments),
assignments_due: ActiveModelSerializers::SerializableResource.new(@assignments_due),
submitted_assignments: ActiveModelSerializers::SerializableResource.new(@submitted_assignments)
}
}
end
end
这给了我想要的确切结构。
按照:https://github.com/rails/rails/blob/master/activemodel/lib/active_model/serializers/json.rb#L89
@assignments.as_json
应该使用assignments
序列化您的AssignmentSerializer
,如您所愿。