ruby-on-rails – Rails / Rspec – 编写涉及自定义验证和belong

发布时间：2020-12-17 02:17:01 所属栏目：百科来源：网络整理

导读：我有以下AR has_many,belongs_to关系：联赛 – 会议 – 分部 – 球队我有一个看起来像这样的事件模型： class Event ActiveRecord::Base belongs_to :league belongs_to :home_team,:class_name = 'Team',:foreign_key = :home_team_id belongs_to :away_t

我有以下AR has_many,belongs_to关系：

联赛 – >会议 – >分部 – >球队

我有一个看起来像这样的事件模型：

class Event < ActiveRecord::Base
  belongs_to :league
  belongs_to :home_team,:class_name => 'Team',:foreign_key => :home_team_id
  belongs_to :away_team,:foreign_key => :away_team_id

  validate :same_league

  def same_league
    return if home_team.blank? || away_team.blank?
    errors.add :base,"teams must be in the same league" if home_team.league != away_team.league
  end
end

还有一些工厂：

FactoryGirl.define do
  factory :league do
    name 'NFL'
  end
end

Factory.define :conference do |f|
  f.name 'NFC'
  f.association :league
end

Factory.define :division do |f|
  f.name 'North'
  f.association :conference
end

Factory.define :team do |f|
  f.name 'Packers'
  f.locale 'Green Bay'
  f.association :division
end

FactoryGirl.define do
  factory :event do
    association :league
    association :home_team,:factory => :team
    association :away_team,:factory => :team
  end
end

那么,有了这些,我将如何为same_league验证方法编写规范？

describe Event do
  pending 'should not allow home_team and away_team to be from two different leagues'
end

我的问题是了解在不同联盟中创建两个团队并将其中一个与home_team相关联,另一个与event_team在事件模型中相关联的最简单方法.

解决方法

您可以存储使用工厂生成的实例,然后显式使用其ID来填充后续工厂的外键.

在这里,我创建两个联赛,然后设置两个测试.其中一个赛事有两支球队在同一个联赛中,另一支球队有两支不同联赛的球队.这样我可以测试事件对象是否正确验证：

describe Event do
  before(:each) do
    @first_league = Factory(:league)
    @second_league = Factory(:league)
  end
  it "should allow the home_team and away_team to be from the same league" do
    home_team = Factory(:team,:league_id => @first_league.id)
    away_team = Factory(:team,:league_id => @first_league.id)
    event = Factory(:event,:home_team_id => home_team.id,:away_team_id => away_team.id)
    event.valid?.should == true
  end
  it "should not allow the home_team and away_team to be from two different leagues" do
    home_team = Factory(:team,:league_id => @second_league.id)
    event = Factory(:event,:away_team_id => away_team.id)
    event.valid?.should == false
  end
end

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!