Question

迁移：

class CreateTableSalonWebProfiles < ActiveRecord::Migration
  def change
    create_table :salon_web_profiles do |t|
      t.references :salon, null: false
      t.boolean :attendance_domicile, default: false
      t.boolean :parking_lot, default: false
      t.boolean :wifi, default: false
      t.boolean :physically_impaired_accessibility, default: false
      t.boolean :snack_bar, default: false
      t.boolean :parking_meter, default: false
      t.timestamps
    end
    add_index :salon_web_profiles, :salon_id, unique: true
    add_foreign_key :salon_web_profiles, :salons
  end
end

沙龙模特：

class Salon < ActiveRecord::Base
...
  has_one :salon_web_profile, dependent: :destroy
...
end

新模型：

class SalonWebProfile < ActiveRecord::Base
  belongs_to :salon

  validates_presence_of :salon
  validates_uniqueness_of :salon
end

新的RSpec：

require 'spec_helper'

describe SalonWebProfile do
  it { is_expected.to validate_presence_of(:salon) }
  it { is_expected.to validate_uniqueness_of(:salon) }
end

错误：

2) SalonWebProfile should require salon to be set
     Failure/Error: it { is_expected.to validate_presence_of(:salon) }

     ActiveRecord::StatementInvalid:
       Mysql2::Error: Unknown column 'salon_web_profiles.salon' in 'where clause': SELECT  1 AS one FROM `salon_web_profiles`  WHERE `salon_web_profiles`.`salon` IS NULL LIMIT 1
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/mysql2-0.3.21/lib/mysql2/client.rb:80:in `_query'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/mysql2-0.3.21/lib/mysql2/client.rb:80:in `block in query'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/mysql2-0.3.21/lib/mysql2/client.rb:79:in `handle_interrupt'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/mysql2-0.3.21/lib/mysql2/client.rb:79:in `query'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/ar-octopus-0.8.6/lib/octopus/abstract_adapter.rb:15:in `instrument'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/validator.rb:97:in `validation_errors'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/validator.rb:77:in `collect_messages'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/validator.rb:40:in `messages'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/validator.rb:48:in `has_messages?'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/allow_value_matcher.rb:277:in `has_messages?'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/allow_value_matcher.rb:273:in `errors_match?'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/allow_value_matcher.rb:224:in `block in matches?'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/allow_value_matcher.rb:220:in `each'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/allow_value_matcher.rb:220:in `none?'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/allow_value_matcher.rb:220:in `matches?'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/disallow_value_matcher.rb:16:in `matches?'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/validation_matcher.rb:56:in `disallows_value_of'
     # /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/shoulda-matchers-2.8.0/lib/shoulda/matchers/active_model/validate_presence_of_matcher.rb:126:in `matches?'
     # ./spec/models/salon_web_profile_spec.rb:4:in `block (2 levels) in <top (required)>'
     # ------------------
     # --- Caused by: ---
     # Mysql2::Error:
     #   Unknown column 'salon_web_profiles.salon' in 'where clause'
     #   /home/belasis/.rvm/gems/ruby-2.3.1@user/gems/mysql2-0.3.21/lib/mysql2/client.rb:80:in `_query'

我无法理解发生了什么。在数据库中搜索时，它是否应该转换为salon_id？ rails的版本是3.2.22.5，RSpec版本是3.7。

当我使用rails c并尝试从沙龙创建/访问salon_web_profile时，该错误不会发生，反之亦然。

Answer 1

尝试使用rails测试控制台，即rails c test，如果发生同样的错误，则尝试运行rake db：migrate RAILS_ENV = test

rails - 两个模型之间关系的未知列

1 个答案: