Trouble Using Attr_Accessor in Rails Models and Forms
You might use the attr_accessible method to create getters and setters for a class that has attributes which don't map directly to corresponding fields in a database. For example let's take the scenario where you are processing a credit card transaction. ...
Written by Sean Behan on 06/17/2012
Cool Conditional Syntax in Ruby (on Rails)
Ruby is beautiful
@posts =
if true
Post.all
else
[]
end
Simply elegant!
Written by Sean Behan on 06/17/2012
Roll Your Own Session Based Flash Messaging w/ Sinatra
Session based flash messages are fairly common in web apps. They work well when you have a temporary status to report back to the user, such as successfully saving a form.
If you use Rails it comes with the Framework. If you are using Sinatra there ar...
Written by Sean Behan on 11/01/2013
Extract Domain Names From Links in Text with Postgres and a Single SQL Query
This query and pattern will return urls in text all within a single SQL query.
select substring(column_name from '.*://([^/]*)') as domain_name from table_name;
And here it is in a larger query, say for retrieving page view counts for referrers.
...
Written by Sean Behan on 11/23/2013
PHP Paypal IPN Script
Simple script for posting a valid response back to Paypal service after a sale is completed using the Paypal Instant Checkout payment method.
<?php
// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';
foreach ($_POST as $k...
Written by Sean Behan on 06/17/2012
