Cleaning up Paperclip error messages

Question

Okay, so i\'ve got paperclip working, and I\'m trying to use the built in validator to make sure that the file uploaded

1. Is an image
2. Is not too big

Answer 1

Obviously you solved this for yourself a long time ago, but for anyone who is looking for the answer, there is actually a way to do it within the provided validation.

Simple add your message like so:

validates_attachment :avatar,
:content_type => { :content_type => /image/, :message => "Avatar must be an image" },
:size => { :in => 0..2.megabytes, :message => "Avatar must be less than 2 megabytes in size" }

Answer 2

I ended up writing two custom validators. It's true that these do the same thing the paperclip validators do, but they fail prettier:

  def avatar_is_a_image
    if self.avatar?
      if !self.avatar.content_type.match(/image/)
        errors.add(:avatar, "Avatar must be an image")
      end
    end
  end

  def avatar_is_less_than_two_megabytes
    if self.avatar?
      if self.avatar.size > 5.megabytes
        errors.add(:avatar, "Avatar must be less than 5 megabytes in size")
      end
    end
  end