{"issue":{"title":"uninitialized constant NestedForm::BuilderMixin","user":{"id":658498,"login":"gaaady","url":"https://api.github.com/users/gaaady","gravatar_id":"4bc39606257bc94aba59cd941311d3d7","avatar_url":"https://secure.gravatar.com/avatar/4bc39606257bc94aba59cd941311d3d7?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png"},"milestone":null,"created_at":"2011-12-20T20:25:11Z","labels":[],"state":"open","updated_at":"2011-12-21T10:34:21Z","id":2617765,"html_url":"https://github.com/sferik/rails_admin/issues/887","pull_request":{"patch_url":null,"html_url":null,"diff_url":null},"closed_at":null,"body":"I just installed rails_admin on Rails 3.1.2 and got the attached exceptions.\r\nI'm using the gem \"nested_form\"\r\n\r\nAny idea what can it be ?\r\n\r\n\r\napp/views/rails_admin/main/new.html.haml where line #1 raised:\r\n\r\nuninitialized constant NestedForm::BuilderMixin\r\n\r\nExtracted source (around line #1):\r\n\r\n1: = rails_admin_form_for @object, :url => create_path(:model_name => @abstract_model.to_param, :id => @object.id), :html => { :multipart => true, :data => { :title => @page_name } } do |form|\r\n2:   = form.generate :action => :create\r\n\r\n-------------------------------------------\r\n\r\n/app/views/rails_admin/main/new.html.haml where line #1 raised:\r\n\r\nvalid? is defined by ActiveRecord\r\n\r\nExtracted source (around line #1):\r\n\r\n1: = rails_admin_form_for @object, :url => create_path(:model_name => @abstract_model.to_param, :id => @object.id), :html => { :multipart => true, :data => { :title => @page_name } } do |form|\r\n2:   = form.generate :action => :create\r\n\r\n","number":887,"url":"https://api.github.com/repos/sferik/rails_admin/issues/887","comments":1,"assignee":null},"comment":{"user":{"id":26794,"login":"bbenezech","url":"https://api.github.com/users/bbenezech","gravatar_id":"c1607873b99845b2cd53f8634860d4d4","avatar_url":"https://secure.gravatar.com/avatar/c1607873b99845b2cd53f8634860d4d4?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png"},"created_at":"2011-12-21T10:34:21Z","updated_at":"2011-12-21T10:34:21Z","id":3232088,"body":"Full stacks please. And I don't understand which of those two errors you are getting. \r\nOn a side note, I haven't tested 3.2 yet, and the ActiveReload thingy is a potential PITA for RA, it needs serious testing.\r\n","url":"https://api.github.com/repos/sferik/rails_admin/issues/comments/3232088"},"action":"created"}