CODEWITHSUNDEEP
ruby-on-railsactiverecord
user1185081
user1185081

Reputation: 2118

ActiveRecord validation fails at seeding with Rails 5.2

I am creating a new instance of a working application, and try to seed the User model. One custom validation fails at seeding , but works fine in normal operation:

The User model is linked to the Group model through a HABTM relation. A user must at least belong to the group Everyone, of which id is 0.

user.rb

class User < ApplicationRecord

# Validations
  validate :member_of_Everyone_group

# Relations
  has_many :groups_users
  has_many :groups, through: :groups_users

private 

  def member_of_Everyone_group
    errors.add(:base, :EveryoneMembershipMissing) unless self.group_ids.include? 0
  end

end

group.rb

class Group < ApplicationRecord

# Relations
  has_many :groups_users
  has_many :users, through: :groups_users

end

groups_user.rb

class GroupsUser < ApplicationRecord

### Validations
  validates :is_principal, uniqueness: { scope: [:group_id, :user_id] }
  validates :group_id, uniqueness: { scope: :user_id }

  belongs_to :users
  belongs_to :groups

end

At seeding, the following error is raised:

rails aborted! NameError: uninitialized constant User::Groups

app/models/user.rb:174:in `member_of_Everyone_group'

Can you help me to understand what's going wrong ?

Thanks a lot!

Upvotes: 0

Views: 102

Answers (2)

Jussi Hirvi
Jussi Hirvi

Reputation: 725

A user has_many groups, but in groups_user.rb there is a uniqueness validation for group_id in the scope of user. This seems to be a contradiction.

Upvotes: 0

Summer
Summer

Reputation: 151

belongs_to should use the singular version of the model name, not the plural. In your GroupsUser model, change those lines to:

belongs_to :user
belongs_to :group

Upvotes: 1

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