Question

我有两个模型，一个带有问题，可以在调查表中动态添加问题，另一个带有答案。答案显示在答案表的单独页面上-因此它们与问题无关。每个答案中只有一个问题ID。我的任务是在创建新的审核之前检查所有答案，如果对于至少一个答案没有疑问，则将引发错误，并且如果用户单击“取消”，将破坏审核。

我这样尝试，但是不起作用

# frozen_string_literal: true

module Audits
  # Service that create audit with answers
  # only if all answers present.
  class CreateService < ApplicationService
    attr_accessor :audit

    def initialize(audit)
      @audit = audit
    end

    def call
      if check_for_answers == audit.checklist.cout_questions
        audit.create
      else
        audit.destroy
      end
    end

    private

    def check_for_answers
      audit.answers.count
    end
    
  end
end

class Checklist < ApplicationRecord
  # Checklist can have many questions and when delete a checklist
  # the question that belongs to the specific checklist will be deleted as well. 
  has_many :questions, dependent: :destroy
  has_many :audits, dependent: :destroy
  validates :title, presence: true
  validates :description, presence: true
  
  # @return [Integer] sum of all questions in the current list
  def count_questions
    questions.count
  end

end

审核模型

class Audit < ApplicationRecord
  belongs_to :checklist
  has_many :answers, dependent: :destroy
end

问题模型：

class Question < ApplicationRecord
  # Question belongs to a checklist
  belongs_to :checklist
  
  validates :title, presence: true, length: { in: 12..40 }
  validates :description, presence: true
end

答案模型：

class Answer < ApplicationRecord
  # Default answers for questions
  DEFAULT_ANSWER = ['Yes', 'No', 'N/A']

  belongs_to :audit
  validates :answer, presence: true
  validates :comment, presence: true, length: { maximum: 40 }
end

如何使用Rails检查所有问题是否已回答

0 个答案: