![](/img/trans.png)
[英]Rails 3.2 + ruby2 + mysql2 + NoMethodError: undefined method `query' for nil:NilClass
[英]Rails 3.2, SQL NoMethodError: undefined method `auth_group='
完整的錯誤信息
1) AuthGroupResourceUser Validations has a valid factory
Failure/Error: expect(FactoryGirl.build(:auth_group_resource_user)).to be_valid
NoMethodError:
undefined method `auth_group=' for #<AuthGroupResourceUser:0x007f929be173c0>
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/attribute_assigner.rb:16:in `public_send'
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/attribute_assigner.rb:16:in `block (2 levels) in object'
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/attribute_assigner.rb:15:in `each'
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/attribute_assigner.rb:15:in `block in object'
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/attribute_assigner.rb:14:in `tap'
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/attribute_assigner.rb:14:in `object'
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/evaluation.rb:12:in `object'
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/strategy/build.rb:9:in `result'
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/factory.rb:42:in `run'
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/factory_runner.rb:29:in `block in run'
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/factory_runner.rb:28:in `run'
# /Users/daniel.pan/.rvm/gems/ruby-2.1.2@ssui/gems/factory_girl-4.7.0/lib/factory_girl/strategy_syntax_method_registrar.rb:20:in `block in define_singular_strategy_method'
# ./spec/models/auth_group_resource_user_spec.rb:12:in `block (3 levels) in <top (required)>'
因此,我正在為模型“ auth_group_resource_user”進行一些單元測試。 它屬於“ auth_group”,並且屬於“ user”或“ auth_role”,但不能同時屬於兩者。
auth_roles SQL表
CREATE TABLE IF NOT EXISTS `test`.`auth_roles` (
`id` INT(11) NOT NULL AUTO_INCREMENT,
`name`VARCHAR(255) COLLATE utf8mb4_unicode_ci NOT NULL,
PRIMARY KEY (`id`)
)
DEFAULT CHARSET = utf8mb4
COLLATE = utf8mb4_unicode_ci;
auth_groups SQL表
CREATE TABLE IF NOT EXISTS `test`.`auth_groups` (
`id` INT(11) NOT NULL AUTO_INCREMENT,
`name` VARCHAR(255) COLLATE utf8mb4_unicode_ci NOT NULL,
PRIMARY KEY (`id`)
)
DEFAULT CHARSET = utf8mb4
COLLATE = utf8mb4_unicode_ci;
auth_group_resource_user SQL表
CREATE TABLE IF NOT EXISTS `test`.`auth_group_resource_users` (
`id` INT(11) NOT NULL AUTO_INCREMENT,
`auth_group_id` INT(11) NOT NULL,
`user_id` INT(11) DEFAULT NULL,
`auth_role_id` INT(11) DEFAULT NULL,
PRIMARY KEY (`id`),
CONSTRAINT `auth_group_resource_users_auth_group_id_fk` FOREIGN KEY
(`auth_group_id`) REFERENCES `auth_groups` (`id`),
CONSTRAINT `auth_group_resource_users_user_id_fk` FOREIGN KEY
(`user_id`)
REFERENCES `users` (`id`),
CONSTRAINT `auth_group_resource_users_auth_role_id_fk` FOREIGN KEY
(`auth_role_id`) REFERENCES `auth_roles` (`id`),
CONSTRAINT `user_role_check_null`
CHECK (
(`user_id` IS NOT NULL AND `auth_role_id` IS NULL)
OR (`user_id` IS NULL AND `auth_role_id` IS NOT NULL))
)
DEFAULT CHARSET = utf8mb4
COLLATE = utf8mb4_unicode_ci;
AuthGroupResourceUser模型為:
class AuthGroupResourceUser < ActiveRecord::Base
attr_accessible :auth_group_id
belongs_to :group_resource, polymorphic: true
belongs_to :authorizations
validates :auth_group, presence: true
validates :user_id, presence: true, unless: :auth_role_id
validates :auth_role_id, presence: true, unless: :user_id
end
工廠是:
FactoryGirl.define do
factory :auth_group_resource_user do
auth_group
user
end
end
auth_group工廠看起來像
FactoryGirl.define do
factory :auth_group do
name { Faker::Internet.user_name(9) }
end
end
對於我的一生,我無法弄清楚為什么會出現上述錯誤。
最終只是改變了與
belongs_to :auth_group
belongs_to :user
belongs_to :auth_role
而且有效...
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