Rails 4.1 enum support

[dmilisic]

Rails 4.1 introduced enum attributes which don't behave well with RailsAdmin.

RailsAdmin (v 0.6.2) threats enum attributes as integers by default. This can be "fixed" by adding method to the model, ie.

enum status: [ :active, :archived ]
def status_enum
  self.class.statuses.to_a
end

There is another issue - creating or updating record raises:

ArgumentError in RailsAdmin::MainController#new 
'1' is not a valid state

Obviously the controller got '1' as a string value which doesn't match any of the states ('active', 'archived'), nor state as integer (0, 1).
The quick fix might look like:

def status= value
  if value.kind_of?(String) and value.to_i.to_s == value
    super value.to_i
  else
    super value
  end
end

It works, but isn't nice. Especially when you have multiple enum attributes.

Looking forward to support for ActiveRecord::Enum out of the box.

[dmilisic]

Hope this gist helps someone - just put in in config/initializers and RailsAdmin will recognize ActiveRecord enums

https://gist.github.com/dmilisic/38fcd407044ace7514df

[jessieay]

This just got us out of a bind with Rails Admin and ActiveRecord enums. Thank you so much for the gist!

[kenchung]

I put rails_admin_active_record_enum.rb file in the config/initializers but it's not creating the necessary method handlers. Any help? I am using Rails 4.1.1 with Ruby 2.1.2.

[jessieay]

Did you restart your server? You need to restart in order for the file to be picked up by Rails Admin

[jessieay]

Also, for context on what my model looks like:

class User < ActiveRecord::Base
  ROLES = [:learner, :admin, :mentor]
  enum role: ROLES

  def role_enum
    ROLES.each_with_index.to_a
  end
end

Did not need to any any special configuration to the role field in my rails_admin config file once I had the gist linked to above saved in config/initializers/rails_admin_active_record_enum.rb

[kenchung]

Yes, I did restart the server. The part that's not working is this:
ActiveRecord::Base.send(:extend, ActiveRecord::RailsAdminEnum)

It's not actually extending the built-in Rails enum.rb for some reason. By the way, shouldn't extending ActiveRecord::RailsAdminEnum module create #{name}_enum method for you without having to be explicitly defined in your model? It's not overriding the set property either.

[axsuul]

Worked for me

[TimSullivan]

The gist works for display, but when I edit and save, I get an ActiveModel::ForbiddenAttributesError exception.

[PelagicDev]

I'm getting the following error...

[Loremaster]

@jegodwin @TimSullivan To fix you problem you need to install rails_admin from master:

gem 'rails_admin', '0.6.2', git: 'git://github.com/sferik/rails_admin.git', branch: 'master', ref: '02ba1dab32d'

This fixes the error ActiveModel::ForbiddenAttributesError error

[sanrodari]

Thanks for the gist @dmilisic
+1 to the issue

[fstephany]

@kenchung Same problem here. Display is fine but creating/saving is not.

(edit: Rails 4.1.5 + RailsAdmin 0.6.3, saving triggers ArgumentError in RailsAdmin::MainController#new '1' is not a valid state which makes me think that the gist does not actually overrides enum)

[VarunBatraIT]

extend Enumerize
enumerize :ssl_tls, in: [ [ 'not_used', '0' ], [ 'ssl', '1' ], [ 'tls', '2' ] ], default: 'not_used'

This works

[gabu]

Rails 4.1.5 + RailsAdmin 0.6.3
I also have a same problem.

ArgumentError in RailsAdmin::MainController#edit
'2' is not a valid order_status