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Mar 6
do not call a method errors inside an activerecord model rails
Suppose you have this: 
class Widget < ActiveRecord::Base
  def errors
    [1,2]
  end
end
where errors is a supposedly harmless, unrelated method that returns errors related to your Widgets. Then, try the following in your controller: 
wdgt = Widget.new
wdgt.save!
and you will get a message saying something like 
NoMethodError (undefined method `full_messages' for #<Array:0x00000102344c68>)
This is because rails tries to print out wdgt.errors.full_messages, and fails to find full_messages on the array [1,2] returned by your custom errors method.
Thus, my rails hint: don’t create an errors method in an activerecord model.