2018-02-01 rails101

错：module Flasheshelper
对：module FlashesHelper

错： <%= f.submit "Submit", disable_with => 'Submiting...' %>
对： <%= f.submit "Submit", :disable_with => 'Submiting...' %>

错：<%= render :partial => "group_item", :collection => @group, :as => :group %>
对：<%= render :partial => "group_item", :collection => @groups, :as => :group %>