Remove Active Record Error in Rails 3.1

Question

I'm upgrading an application from Rails 3.0 to 3.1 and found the following error showing up in my tests:

NoMethodError: undefined method `delete' for #<ActiveModel::Errors:0x007f928c0ee310>

I have the following snippet that moves errors :

after_validation do

  self.errors[:image_size].each do |message|
    self.errors.add(:image, message)
  end

  self.errors[:image_extension].each do |message|
    self.errors.add(:image, message)
  end

  self.errors.delete(:image_size)
  self.errors.delete(:image_extension)

end

I still need to be able to move all validations from image_size and image_extension, but I'm not sure how do this in Rails 3.1. Any ideas?

Answer 1

The only method that removes anything is clear and the removes everything so I think you have to:

• Pull all the error messages out (probably using to_hash).
• Clear all the errors with self.errors.clear.
• Put all the error messages back in the right/desired places using self.errors.add.