ruby-on-rails – Rails 3到4迁移唯一性验证问题

发布时间：2020-12-16 19:02:16 所属栏目：百科来源：网络整理

导读：上下文我们正在从Rails 3.2.12迁移到4.0.2,从Ruby 1.9.3迁移到2.1.8. 我们有很多测试覆盖率来完成RSpec形式的迁移. 问题检查卡模型上的唯一性验证失败的规范之一. validates :mobile,uniqueness: {scope: :program_member_id,message: I18n.t('models.card

上下文

我们正在从Rails 3.2.12迁移到4.0.2,从Ruby 1.9.3迁移到2.1.8.

我们有很多测试覆盖率来完成RSpec形式的迁移.

问题

检查卡模型上的唯一性验证失败的规范之一.

validates :mobile,uniqueness: {scope: :program_member_id,message: I18n.t('models.card.error.cardholder_already_has_mobile')},if: :mobile

program_member可能只有一个mobile：true卡.

该规范为该成员创建了2张牌,将其中的一张牌变为移动牌,然后在使用第二张牌时预期验证的消息.

let(:program) { FactoryGirl.create(:program) }
let(:card) { FactoryGirl.create(:card,program: program) }

context 'when cardholder already has a mobile card' do
  it 'fails validation' do
    card2 = FactoryGirl.create(:card,program: program)
    program_member_user = FactoryGirl.create(:program_member_user,card_number: card2.cardnumber)
    program_member = program_member_user.program_members.first

    program_member.cards << card2
    card2.update_attributes(:mobile => true)

    program_member.cards << card
    card.update_attributes(:mobile => true)

    expect(card.errors.messages).to include(:mobile=>[I18n.t('models.card.error.cardholder_already_has_mobile')])
  end
end

期望：

expected {} to include {:mobile=>["Cardholder already has a mobile card"]}

当我去我们的主分公司时,这个规范通过.

从此规范工作到失败的唯一因素是Rails 3到4迁移.

尝试在控制台中运行规范代码只是为了找到该成员有2个移动卡并做card.valid？两个实例都返回true.

题

在Rails 4中,在唯一性验证或验证生命周期方面有什么变化吗？

解决方法

好吧所以我正在做点什么.

我使用相同的Ruby和Rails版本创建了一个测试项目.

https://github.com/frank184/test_uniquness

在这个项目中,我会有一个User模型,其管理列为布尔值,具有类似的验证.

validates_uniqueness_of :admin,if: :admin?

我使用了shoulda-matcher和rspec来描述所需的结果.

require 'rails_helper'

RSpec.describe User,type: :model do
  let(:user) { build :user }
  subject { user }

  describe 'validations' do
    context 'when admin = true' do
      before(:each) { user.admin = true }
      it { is_expected.to validate_uniqueness_of(:admin)  }
    end
  end
end

规范失败,输出如下：

Failures:

  1) User validations when admin = true should validate that :admin is case-sensitively unique
     Failure/Error: it { is_expected.to validate_uniqueness_of(:admin)  }

       User did not properly validate that :admin is case-sensitively unique.
         After taking the given User,whose :admin is ?true?,and saving it as
         the existing record,then making a new User and setting its :admin to
         ?true? as well,the matcher expected the new User to be invalid,but
         it was valid instead.
     # ./spec/models/user_spec.rb:10:in `block (4 levels) in <top (required)>'

Finished in 0.11435 seconds (files took 0.79997 seconds to load)
1 example,1 failure

我认为代码很好,并且确切地将Rails提升到了4.1.0.

规范通过了！

bundle update
rspec
.

Finished in 0.09538 seconds (files took 1.28 seconds to load)
1 example,0 failures

（编辑：李大同）

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