November 2009
1 post
3 tags
Solving the problem of non-working key forwarding...
After I upgraded my Mac to Snow Leopard, Capistrano deployments with key forwarding stopped working. I started getting a following error:
Permission denied (publickey).
My fellow Bambinos enlightened me that key forwarding was switched off by default in Snow Leopard. The solution was to change the following two lines in /etc/ssh_config:
#Host *
#ForwardAgent no
to the following two...
July 2009
1 post
migration to generate paperclip attachment on your...
./script/generate paperclip MODEL_NAME ATTACHMENT_NAME
example:
./script/generate paperclip video source
GENERATES:
add_attachments_source_to_video.rb
class AddAttachmentsSourceToVideo < ActiveRecord::Migration def self.up add_column :video, :source_file_name, :string add_column :video, :source_content_type, :string add_column :video, :source_file_size, :integer end def self.down ...
June 2009
2 posts
Is beanstalkd really distributed?
I recently needed to understand how beanstalkd works and how does it implement the distributed behaviour, so I did some reading.
From the beanstalkd main page:
beanstalkd is a fast, distributed, in-memory workqueue service
Ok, it is a distributed service, so let’s find some more info about its distributed nature.
This is what we can find in beanstalkd FAQ:
Does beanstalk inherently...
May 2009
2 posts
Run Apple's QuickTime Player from the terminal
open -a “QuickTime Player” VIDEO_FILE
Grep in Project command for TextMate →
April 2009
1 post
Escaping Params Containing Periods in Ruby on... →
:requirements => { :id => /.*/ }
March 2009
3 posts
How to run the Haml plugin generator in Rails...
Here is how to run Haml’s unorthodox plugin generator method using Rails Templates:
Here is a sample Rails Template for fun:
The best UNIX commands on the web →
Freudian slip during copywriting
The alternative, and traditional method of ruinning software projects is called “waterfall”
February 2009
1 post
Open Terminal Here in Finder →
January 2009
3 posts
Include custom actions from a module in a Merb...
module Foo
def self.included(base)
base.show_action(:custom_action)
end
def custom_action
"foo"
end
end
Git SHA1 of HEAD in your Rails/Merb App →
Delete all removed files from git
git add -u
This deletes all removed files from git.
December 2008
1 post
Skinny controllers with resources_controller and...
resources_controller takes you a long way into simplifying your controllers. Still, whenever you need to add custom collection or member routes to your app you’re out in the wild again. This snippet of code uses a combination of ActiveRecord’s named_scopes and resources_controller to simplify those custom actions. With a bit more of abtraction it could be turned into library code that...
November 2008
9 posts
Convention for ActiveRecord extensions
There’s not one but many ways of extending ActiveRecord. Some people do:
ActiveRecord::Base.send :include SomeModule
Which in turns includes or extends other modules.
Others extend first, and include internally. Others class_eval the hell out of everything.
There are a few gotchas to avoid, such as accidentally reloading the same modules (ie. in background tasks), which can cause havoc...
Get the current working directory of a process
pwdx PID
Build a bug tracker in 5 mins
Go to google docs, click new spread sheet
Click form, create your form with title, description, severity (1 minor .. 5 epic fail), who’s responsible in a dropdown and reported by.
Save your form
Add conditional colouring on severity
Add a completed/status column
Embed form onto a page/email form to bug hunters.
Adding comments to Tumblr →
2 tags
Special characters in Rails nested routes. →
I hit this problem, and this was the only place, where I could find solution.
3 tags
ActiveRecord.connection.execute and INSERT...
Today I was working with a more complex version of the following code using ActiveRecord:
def find_or_create_user_by_id(id)
begin
user = User.find(id)
rescue
User.connection.execute("INSERT INTO users (id ) VALUES(#{id})")
user = User.find(id)
end
return user
...
3 tags
How to get remote_ip address in Rails application...
To get the ip address of a client in rails application,
you can call remote_ip method on request object.
This works fine, unless your application is behind proxy
which ip address doesn’t match the
following regular expression:
/^127\.0\.0\.1$|^(10|172\.(1[6-9]|2[0-9]|30|31)|192\.168)\./
If the proxy ip address is different, remote_ip will return ip address of the...
Test ActiveRecord schemas
I’m writing a gemified extension to ActiveRecord. I want a SQLite database to create a quick and dirty schema to test my finders. Yes, I’m lazy and can’t be bothered to write mocks. I want to be able to add or remove columns quickly while avoiding SQL (did I mention I’m lazy?)
Solution: create a SQLite file in your test folder, and the following rake task in your...
October 2008
2 posts
Deleting Duplicates with Unique Keys in MySQL with...
Trying to delete duplicate data is a pain. Especially when your table is bigger than your RAM available so you cannot just create a temp table can copy the unique rows back and forth.
So I’ve made available some code in this gist which will delete duplicate data, in the case where the ids are unique but the data is duplicated.
# USE: delete_dups_for(Comment, :post_id)
NB: code is at the...
Remote Images and jQuery
I just got bitten by something really nasty, so thought I’d care to share…
Symptom
On a certain page, we are outputting 10 divs each of which contained a radio button and an image. In Safari, (and it turned out IE), each time I refreshed, only some of those 10 divs were rendered. Sometimes it would be 5, sometimes 8, sometimes none displayed at all - it all seemed to be completely...
September 2008
9 posts
Regex to detect non-ascii
[^a-zA-Z0-9,()\s.-"'\;+!_\/:*\%\?]
3 tags
Normalize params
Sometimes we need to make sure there is a key in the params hash, even when it’s not defined in the routes.rb file. Ie. params[:page]. Instead of validating it in separate actions, just make sure it’s there in a before_filter
before_filter :normalize_params protected def normalize_params params[:page] ||= 1 # some more normalization if needed end
Then you can be confident that it...
gitx — a nice gitk →
Equal column height
You have several HTML columns and you want them to be the same height. Problem is, the content is dynamic so you don’t know what the actual height will be.
This jQuery bit resolves the highest column and applies it to all columns in the group.
;(function($){ $.fn.equalHeight = function(){ var max_height = 0; $(this).each(function(){ var h = $(this).height(); if(h >...
Webcams @ the Large Hadron Collider →
cache + content_for = fail
Tumblr is useless and can’t display text without mangling it. To view this post, go to http://gist.github.com/10444 .
User agent string history →
Has the Large Hadron Collider destroyed the world... →
3 tags
Removing mocha stubs and expectations
The following code removes all the method stubs and expectations created
with mocha.
require 'mocha/standalone'
include Mocha::Standalone
mocha_teardown
August 2008
26 posts
“My new framework goes one better than Caffeine. It’s called Cocaine…...”
– Rails, Merb vs. Caffeine
Maruku: a Markdown-superset interpreter →
Markdown implementation with extensions such as support for setting classes (very useful when you need to set the class of a <code> block)
Example:
some.ruby('code')
{:lang=ruby}
Net::HTTP missing delete -- a reprieve
Earlier today I wrote
bambinos:
I just got really screwed over by Net::HTTP
The docs talk about a nice delete method for sending HTTP DELETE requests, however it turns out that it does not exist
>> Net::HTTP.methods.include?("delete")
=> false
I am somewhat annoyed, especially given we asked a third-party to respond to DELETE requests, and now have to figure out a way to send them!...
Net::HTTP missing delete
I just got really screwed over by Net::HTTP
The docs talk about a nice delete method for sending HTTP DELETE requests, however it turns out that it does not exist
>> Net::HTTP.methods.include?("delete")
=> false
I am somewhat annoyed, especially given we asked a third-party to respond to DELETE requests, and now have to figure out a way to send them! Bad ruby! Bad Net HTTP!
ies4osx →
Run 5.0, 5.5 and 6.0 stand alone on OS X.
How to mock Rails view helpers with RSpec
If you want to stub view helper method in some view spec, you can do the following:
@controller.template.stub!(:helper_method_name).with(:some_args).and_return("some result")
should_receive in rspec stories
In Test 1 I do this
SSO::SSO.should_receive(:authorize).with(“foo@bar.com”, “pass”).and_return(“asdf”)
So now:
SSO::SSO.authorize(“foo@bar.com”, “pass”) -> “asdf”
Then in test 2 I do
SSO::SSO.should_receive(:authorize).with(“foo@bar.com”, “pass”).and_return(“qwer”)
But I still...
HHGTTG online →
What’s special about teams with low technical... →
More Agile 08 notes.
Predicting Velocity When Team Membership Or Size... →
Easy Rails recommendations with... →
APIdock - Ruby, Rails and Rspec Documentation →
A nicely designed site, with versioned documentation for Ruby, Ruby on Rails and RSpec. It also allows for users to signup (with OpenID) and post comments - adding to the documentation for a method. These can then be ‘Thanked’ by other members in the community.
Overall, very nicely done.
git branch profile_editing_feature --track...
Changes in Ruby 1.9 →