Posted by
Barry – July 9, 2010
I'm using Mongoid and MongoDB on a new project, so my models are not derived from ActiveModel. On previous projects I just used the validates_url_format_of plugin, but for this project I put the code from the module into an initializer (config/initializers/validation.rb) and used extend.
module ValidatesUrlFormatOf
IPv4_PART = /\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]/ # 0-255
REGEXP = %r{
\A
https?:// # http:// or https://
([^\s:@]+:[^\s:@]*@)? # optional username:pw@
( (([^\W_]+\.)*xn--)?[^\W_]+([-.][^\W_]+)*\.[a-z]{2,6}\.? | # domain (including Punycode/IDN)...
#{IPv4_PART}(\.#{IPv4_PART}){3} ) # or IPv4
(:\d{1,5})? # optional port
([/?]\S*)? # optional /whatever or ?whatever
\Z
}iux
DEFAULT_MESSAGE = 'does not appear to be a valid URL'
DEFAULT_MESSAGE_URL = 'does not appear to be valid'
def validates_url_format_of(*attr_names)
options = { :allow_nil => false,
:allow_blank => false,
:with => REGEXP }
options = options.merge(attr_names.pop) if attr_names.last.is_a?(Hash)
attr_names.each do |attr_name|
message = attr_name.to_s.match(/(_|\b)URL(_|\b)/i) ? DEFAULT_MESSAGE_URL : DEFAULT_MESSAGE
validates_format_of(attr_name, { :message => message }.merge(options))
end
end
endThen my model extends that module:
class Location
include Mongoid::Document
include Mongoid::Timestamps
extend ValidatesUrlFormatOf
validates_url_format_of :url, :allow_blank => true
...
Posted by
Barry – July 6, 2010
Here's how I test my admin controllers that use HTTP basic authentication using RSpec 2:
before(:each) do
user = 'test'
pw = 'test_pw'
request.env['HTTP_AUTHORIZATION'] = ActionController::HttpAuthentication::Basic.encode_credentials(user,pw)
endActually, that's how I did it when I first tested things, but I've since put it in its own module under spec/support/auth_helper:
module AuthHelper
# do admin login
def admin_login
user = 'test'
pw = 'test_pw'
request.env['HTTP_AUTHORIZATION'] = ActionController::HttpAuthentication::Basic.encode_credentials(user,pw)
end
endand now my controller spec looks like this:
describe Admin::LocationsController do
include AuthHelper
before(:each) do
admin_login
end
describe "GET index" do
it "assigns all locations as @locations" do
loc = Factory.create(:location)
get :index
assigns(:locations).should eq([loc])
end
end
describe "GET show" do
it "assigns the requested location as @location" do
loc = Factory.create(:location)
get :show, :id => loc.id
assigns(:location).should === loc
end
end
endThat "Factory" line comes from my use of factory_girl rather than fixtures.
Posted by
Barry – July 5, 2010
After wrestling with various combinations of cleaning out my database between tests, this is what I'm using on a new Rails 3 application that uses Mongoid, RSpec 2, and Database Cleaner. I have one table (neighborhoods) which is populated using rake db:seed, so I'm excluding that from the cleanup.
Put this into your spec/spec_helper.rb:
require 'database_cleaner'
RSpec.configure do |config|
config.mock_with :rspec
config.before(:each) do
DatabaseCleaner.orm = "mongoid"
DatabaseCleaner.strategy = :truncation, {:except => %w[ neighborhoods ]}
DatabaseCleaner.clean
end
end
Posted by
Barry – September 9, 2009
I just upgraded my dev machine to version 2.0.0 of Vlad the Deployer. I got one unexpected error -- "Please specify the deploy path via the :deploy_to variable" -- but here is how I fixed it:
git support is now a separate gem, so remember to run
sudo gem install vlad-git
I also had some problems when version 1.4.0 was also on my machine, so I uninstalled that one with:
sudo gem uninstall vlad -v "1.4.0"
Posted by
Barry – September 8, 2009
It took me a bit of experimentation, and I never found an example in a single place that showed how to set it up exactly how I wanted, so here is my code in my model for storing images used by the ArtCat calendar on Amazon S3. I am using Paperclip version 2.3.1.
First you will need to set up the distribution in Amazon for your given bucket, so that you have a URL to use for the :s3_host_alist value. I also set up a CNAME so that I can use a nice url like calcdn.artcat.com.
Note that I don't want to store any images other than my resized ones, so my :default_style is set to :original. Some of these values are actually constants in my config files, but I've replaced those here to make it more clear.
has_attached_file :image,
:storage => 's3',
:s3_credentials => "#{RAILS_ROOT}/config/s3_credentials.yml",
:bucket => 'artcal-production',
:s3_host_alias => 'calcdn.artcat.com',
:url => ':s3_alias_url',
:path => "images/:class/:id_:timestamp.:style.:extension",
:styles => { :thumb => '60x60#', :medium => '270x200#', :original => '600x600>' },
:default_style => :original,
:default_url => 'http://cdn1.artcat.com/pixel.gif',
:s3_headers => { 'Expires' => 1.year.from_now.httpdate },
:convert_options => { :all => '-strip -trim' }Note that you do NOT have to set the ActionController::Base.asset_host to your CNAME for images. Paperclip just handles it as expected for these images.
You'll notice an interpolation in the :path that is not standard. Thanks to this Intridea Company Blog post I learned that I will need to change my image names when they are updated. CloudFront will not update my image due to that Expires header I set above for a whole year, which is not what we want to happen. I solved this by including the timestamp based on the updated_at value for the image. Based on that Intridea post, this is the code I added to config/initalizers/paperclib.rb.
Paperclip.interpolates(:timestamp) do |attachment, style|
attachment.instance_read(:updated_at).to_i
end
At first I was storing the images on the file system and serving them via Apache. Moving them to CloudFront improved my page load times by at least 50%, and means that I don't have to run as powerful as server to handle a lot of traffic on this image-heavy site as I might otherwise need.
