Category: Rails

Rails + Devise and remember_me (rememberable) by default

December 29, 2013 /

I've wanted to add an automatic remember_me for Devise by default (without a checkbox). First I've tried to do something like this:

def create
  params[:user].merge!(remember_me: true)
  super
end

Unfortunately it doesn't seem to work. I have a rememberable strategy included in my User model, but still, remember_user_token cookie was not created. I don't know why, even with remember_me option provided, it sets it to false. The easiest (and working) way to fix this, is to overwrite remember_me method, so it will always return true value.

# User of our portal
class User < ActiveRecord::Base

  devise :database_authenticatable, 
    :trackable, :encryptable, :confirmable, :recoverable,
    :registerable, :validatable, :lockable, :rememberable

  # @return [Boolean] user should be remembered when he logs in (with cookie)
  #   so he won't be asked to login again
  def remember_me
    true
  end
end

To be honest I didn't have time to investigate it more deeply, so maybe there's a better solution but this one works. After that, remember_user_token cookie is created and the session isn't lost after user closes his browser.

Update

As Christoph mentioned in one of the comments, this is the "official" way to do this: , so probably there's no better way ;)

Paperclip and Rspec: Stubbing Paperclip/ImageMagick to make specs run faster, but with image resolution validation

November 8, 2013 /

I always test my Paperclip stuff. Mostly because quite often, I need to ensure proper images resolution or other image-based conditions. Unfortunately, it takes some time, mostly because ImageMagick is performing resource consuming operations. Each resolution test needs to get valid image to determine width and height. After that, Paperclip will try to create all the thumbs and save them. This takes a lot of time! Luckily there's a Quickerclip that stubs Paperclip methods, allowing it to run faster. There's one small issue with this code: it stubs the image, so there's no way to test resolution validations. In order to make it work, but without any additional callbacks and without images converting, we need to stub two things:

First the Paperclip.run method:

# We stub some Paperclip methods - so it won't call shell slow commands
# This allows us to speedup paperclip tests 3-5x times.
module Paperclip
  def self.run cmd, params = "", expected_outcodes = 0
    cmd == 'convert' ? nil : super
  end
end

This will ignore convert command, so thumbnails won't be created on save.

Also we need to stub the Paperclip::Attachment.post_process:

class Paperclip::Attachment
  def post_process
  end
end

Don't forget to add this to your spec_helper or test_helper file!

After that, your tests/specs should run 3-5x times faster (it depends on how heavily you app is Paperclip based.

UPDATE FOR PAPERCLIP > 3.5.2
For Paperclip newer than 3.5.2 please use code presented below:

module Paperclip
  def self.run cmd, arguments = "", interpolation_values = {}, local_options = {}
    cmd == 'convert' ? nil : super
  end
end

class Paperclip::Attachment
  def post_process
  end
end

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