"Roles is invalid" exception when using with Mongoid 6 and Ruby On Rails 5

[Zeben]

Hello everybody. I've got an terrible bug that makes roles creation impossible. There is my steps:

1. Generate new Ruby On Rails project: rails new sample --skip-active-record and cd into sample directory;
2. Add gems mongoid, bson_ext and rolify into Gemfile;
3. Bundle it with bundle;
4. Issue the command rails g mongoid:config;
5. Create new model named User: rails g model user name password_digest. It works with ActiveModel::SecurePassword, that makes possible using has_secure_password;
6. Issue the command rails g rolify Role User -o=mongoid;
7. Start to use Rails console via rails c command;
8. Try to add new user with any role (e.g. admin):

   user = User.new
   user.name = "Admin"
   user.password = "verysecurepassword"
   user.add_role :admin
   user.save!

9. Get an exception:

   Mongoid::Errors::Validations: 
   message:
   Validation of User failed.
   summary:
   The following errors were found: Roles is invalid
   resolution:
   Try persisting the document with valid data or remove the validations.
       from /usr/lib/ruby/gems/2.3.0/gems/mongoid-6.0.3/lib/mongoid/persistable.rb:78:in `fail_due_to_validation!'
       from /usr/lib/ruby/gems/2.3.0/gems/mongoid-6.0.3/lib/mongoid/persistable/savable.rb:45:in `save!'
       from (irb):6
       from /home/skovo/.gem/ruby/2.3.0/gems/railties-5.0.1/lib/rails/commands/console.rb:65:in `start'
       from /home/skovo/.gem/ruby/2.3.0/gems/railties-5.0.1/lib/rails/commands/console_helper.rb:9:in `start'
       ...

   My user.rb file:

   class User
   include Mongoid::Document
   rolify
   include ActiveModel::SecurePassword
   field :name, type: String
   field :password_digest, type: String
   has_secure_password
   end

   ... and role.rb file that was generated via rails g rolify Role User -o=mongoid:

   class Role
   include Mongoid::Document
   has_and_belongs_to_many :users
   belongs_to :resource, :polymorphic => true
   
   field :name, :type => String
   
   index({
   :name => 1,
   :resource_type => 1,
   :resource_id => 1
   },
   { :unique => true})
   
   validates :resource_type,
           :inclusion => { :in => Rolify.resource_types },
           :allow_nil => true
   
   scopify
   end

I'm using Mongoid 6.0.3, Rails 5.0.1, bson_ext 1.5.1, and Rolify 5.1.0. The error doesn't occures in project that uses Rails 4.2.1. Please help me to understand where the error can be. Tnanks in advance.

[akarsh007]

I am facing a similar error while upgrading Mongoid from version 5 to 6. Did you get any solution to it @Zeben .

Thanks

[durran]

Mongoid 6 follows the new pattern of AR5 requiring a belongs_to relation to always require its parent (see https://github.com/rails/rails/pull/18937/files). So rolify would need to change to have it set or the generation should make it optional, ie:

belongs_to :resource, :polymorphic => true, :optional => true

[akarsh007]

Thanks a lot Durran. Will try this and keep you posted. Hopefully would be able to resolve the bug.

Regards, Akarsh

On Thu, Mar 2, 2017 at 5:33 PM, Durran Jordan notifications@github.com wrote:

Mongoid 6 follows the new pattern of AR5 requiring a belongs_to relation to always require its parent (see https://github.com/rails/ rails/pull/18937/files). So rolify would need to change to have it set or the generation should make it optional, ie:

belongs_to :resource, :polymorphic => true, :optional => true

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[Zeben]

Hello Durran. It works for me, thank you many times for the comment. Recently I've deleted this validation but I've tried to restore the line with :optional => true completion. It works fine now. But anyway Rolify still doesn't create correct role.rb template, even with new project creation. Will be fixed this behaviour in Rolify in near future? Thanks in advance.