Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Already on GitHub? Sign in to your account

uninitialized constant Dashboard, Main, etc... #950

redrick opened this Issue Oct 7, 2013 · 2 comments


None yet
3 participants

redrick commented Oct 7, 2013

Hi guys,

I got this annoying thing going on in my app, I thought that its the mistake of gems I am using, but turns out it got to be cancan.. here is my situation as I wrote already in the mistake for activeadmin

I rewrote my app into rails (not rails-api anymore), I am using few models, so I rewrote current_ability method like this:

def current_ability
  ability_class = (controller_name.classify + 'Ability').classify.constantize

  @current_ability ||= ability_class.new(current_user)

which works perfectly for the application, where i got on the level of models ability folder and there are included all my abilities including Application ability:

class ApplicationAbility

  ### includes
  include CanCan::Ability

  ### public
  def initialize(user)
    user ||= User.new

    can :manage, :all

all other abilities inherit from this one...

and now my problem is that I need some admin, because this is just REST API so its not HTML heavy, therefore with every change I got to go to database and make mess there through mysql workbench or some such tool...

so I chose activeadmin to do this stuff, but after instal and all I just got the message as I linked from acitve admin"

NameError in Admin::DashboardController#index
uninitialized constant Dashboard

So after some talks with people over there I chose to switch to rails_admin, so I would have no problems, but I got exactly the same problem, but this time its not dashboard but Main

After looking into application controller I got the load_and_authorize_resource there, if I comment it out, everything goes as expected, but after adding it back, all things fall apart and throw error again...

I found out that as long as I supply the load_and_authorize_resource in every other controller that inherits from application one but not to the application one it works just fine... but i got kinda bigg app and maintaining this line in all files seems kinda dull when i can put it into one all inherit from....

please dont you people have some solution for this kind of situation ? thx for you time :)

dannio commented Apr 28, 2014

I believe it's due to the fact you don't have a model for that controller?
If you don't have a model backed controller, you can't use load_and_authorize_resource, but intead call:
authorize_resource :class => false

xhoy commented Jul 1, 2014

Thanks for your submission! The ryanb/cancan repository has been inactive since Sep 06, 2013.
Since only Ryan himself has commit permissions, the CanCan project is on a standstill.

CanCan has many open issues, including missing support for Rails 4. To keep CanCan alive, an active fork exists at cancancommunity/cancancan. The new gem is cancancan. More info is available at #994.

If your pull request or issue is still applicable, it would be really appreciated if you resubmit it to CanCanCan.

We hope to see you on the other side!

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment