Hello fellow stackoverflow members.

I have been following this guide to enable users to have their own avatar.

But i have bumped in to a litle problem. When the user is cropping the image the model tries to validate all my validations. My user model looks like this:

class User < ActiveRecord::Base

  has_attached_file :avatar, :styles => { :small => "100x100>", :large => "500x500>" }, :processors => [:cropper]

  attr_accessor :password, :crop_x, :crop_y, :crop_w, :crop_h
  attr_accessible :crop_x, :crop_y, :crop_w, :crop_h
  validates_confirmation_of :password
  validates_presence_of :password

And when the user runs the crop updating script the user model tries to validate the password. But because i have no password field on the cropping page it can't validate it.

Here is the updating of the crop:

@user = User.find(current_user.id)
  if @user.update_attributes(params[:user])
    flash[:notice] = "Successfully updated user."
  end

How can i bypass this in a easy and clean way?