Question

以下是我对控制器的关注Concerns::V1::PlanFinding。根据{{1}}控制器和操作，它会调用base

set_plan

下面是一个控制器，我将其引起关注：

 extend ActiveSupport::Concern
  attr_accessor :plan, :custom_key

  included do |base|
    actions = case base.to_s
              when "Api::V1::PlansController"
                [:show, :total_prices, :update]
              when "Dist::PlansController"
                [:show, :total_prices, :flight_info]
              end

    if actions.present?
      before_action :set_plan, only: actions
    else
      before_action :set_plan
    end
  end

  def set_plan
    @plan = Model.find('xxx')
    @custom_key = params[:custom_key] || SecureRandom.hex(10)
  end

这很好。但是关注代码过多地与class Dist::PlansController include ::Concerns::V1::PlanFinding控制器混在一起。

我的问题是：由于我们无法在控制器中使用如下所示的base选项。如何实现我自己的only选项以包含或找到一种新方法将only控制器与关注点分离：

base

Answer 1

AFAIK开箱即用是不可能的。我使用以下方法：

included do |base|
  actions = base.const_defined?('PLAN_FINDING_USE') &&
            base.const_get('PLAN_FINDING_USE')

  if actions.is_a?(Array)
    before_action :set_plan, only: actions
  else
    before_action :set_plan
  end
end

和

class AdministratorCreateUpdateSerializer(ModelSerializer):

    username = serializers.CharField(
        source='user.username',
        validators=[UniqueValidator(queryset=User.objects.all())]
    )
    email = serializers.EmailField(
        source='user.email',
        validators=[UniqueValidator(queryset=User.objects.all())]
    )
    password = serializers.CharField(
        source='user.password',
        allow_blank=True,
        style={'input_type': 'password'}
    )
    first_name = serializers.CharField(
        source='user.first_name'
    )
    last_name = serializers.CharField(
        source='user.last_name'
    )

    class Meta:
        model = Administrator
        fields = [
            'username',
            'email',
            'password',
            'first_name',
            'last_name',
        ]

如何在rails控制器中仅包含操作的关注模块

1 个答案: