Question

我正在尝试测试模型关联，但是当我运行测试时，它永远不会通过。

尝试按照文档进行操作，但没有成功。

我的实体故事与同一实体有3个关联：用户

class Story < ApplicationRecord
  belongs_to :creator, class_name: 'User'
  belongs_to :writer, class_name: 'User'
  belongs_to :reviewer, class_name: 'User'
end

在用户端定义的关联：

has_many :created_stories, class_name: 'Story',
    foreign_key: 'creator_id'
  has_many :written_stories, class_name: 'Story',
    foreign_key: 'writer_id'
  has_many :reviewed_stories, class_name: 'Story',
    foreign_key: 'reviewer_id'

测试：

class StoryTest < ActiveSupport::TestCase
  should belong_to(:creator).class_name('User').with_foreign_key('creator_id')
  should belong_to(:writer).class_name('User').with_foreign_key('writer_id')
  should belong_to(:reviewer).class_name('User').with_foreign_key('reviewer_id')
end

尽管，当我运行测试时，我得到了：


Error:
StoryTest#test_: Story should belong to reviewer class_name => User. :
Mysql2::Error: Duplicate entry '' for key 'index_users_on_email'

已经尝试过，在Story模型上添加外键，结果仍然相同。

Answer 1

我也在foreign_key模型中添加了Story，并且我的测试通过了：

class Story < ApplicationRecord
  belongs_to :creator, class_name: 'User', foreign_key: "creator_id"
  belongs_to :writer, class_name: 'User', foreign_key: "writer_id"
  belongs_to :reviewer, class_name: 'User', foreign_key: "reviewer_id"
end

此外，我的story_spec,rb看起来像这样：

require 'rails_helper'

RSpec.describe Story, type: :model do
  context "associations" do
    it { should belong_to(:creator).class_name('User').with_foreign_key('creator_id') }
    it { should belong_to(:writer).class_name('User').with_foreign_key('writer_id') }
    it { should belong_to(:reviewer).class_name('User').with_foreign_key('reviewer_id') }
  end
end

测试与shoda的多个关联，应该属于使用外键

1 个答案: