Forms sometimes become empty

[hron84]

When I try render forms, I sometime got an empty page with latest Git master

I set my gemfile to 4b21623 ref because this is a last known good version. I dunno what happened between that and master, but something broken.

Code:

ActiveAdmin.register Account do
  # ...
  form do |f|
    f.inputs do
      f.input :package, :hint => 'Select empty package to edit quota', :input_html => { :disabled => (!f.object.package.blank?) }
      f.input :quota, :as => :select, :collection => quota_collection, :input_html => { :class => 'quota', :disabled => (!f.object.package.blank?) }
      f.input :email_quota, :as => :select, :collection => quota_collection, :input_html => { :class => 'quota', :disabled => (!f.object.package.blank?) }
      f.input :active
      f.input :owner, :as => :select, :collection => User.all, :input_html => { :disabled => (!f.object.owner.blank?) }
      unless f.object.owner.blank?
        f.input :owner_id, :as => :hidden, :value => f.object.owner.id
      end
    end

    f.buttons
  end
end

No stacktrace, no info about what happened, just renders an empty form. All requests to models are covered by tests and no problem there.

Env: Ruby 1.8.7 Rails 3.1.3

[cloud8421]

Having a similar issue with 0.4.3, where the form arbre block returns only the latest input inside f.inputs instead of the whole f.inputs block.

[samadhiBot]

All form inputs were disappearing after changing f.buttons to f.actions in active_admin 0.4.3 / formtastic 2.2. Things are working again using active_admin master, formtastic 2.1.1 and reverting back to f.buttons for now.

[jancel]

related to #1224

[hron84]

This issue happens in production mode with formtastic 2.1.1 and AA 4b21623 ... I really not have an idea what is the real problem...
I worked around the previously pasted code by moving conditional element to the first place. I think there is a bug about how arbre handles nil.

[jamesduncombe]

I can confirm that this happens when using f.actions as opposed to f.buttons with Formtastic 2.1.1 and ActiveAdmin 0.4.4.

[jpmckinney]

Doesn't this have to do with putting a conditional as the last item in the inputs block? AA has trouble when a block returns nil. Potential duplicate of #965.

[hron84]

@jpmckinney yeah, the correct workaround is avoiding putting conditional as the last item.

And I confirm, this is a dupe of #965

[jpmckinney]

Closing as dupe.