This is a customized version of the original find_by_param plugin. Its been simplified to take advantage of new Rails 2.2 functionality and I've also stripped out some stuff that I really didn't need. We're using this customized version in the Spree commerce platform.
Find_by_param helps you dealing with permalinks and finding objects by our permalink value
class Post < ActiveRecord:Base make_permalink :with => :title end
now you can do Post.find_by_param(...)
If you have a permalink-column find_by_param saves the permalink there and uses that otherwise it just uses the provided attribute.
Post.create(:title => "hey ho let's go!").to_param #=> "hey-ho-lets-go" (to_param is the method Rails calls to create the URL values)
Post.find_by_param("hey-ho-lets-go") #=>
Post.find_by_param("is-not-there") #=> nil Post.find_by_param!("is-not-there") #=> raises ActiveRecord::RecordNotFound
examples:
make_permalink :with => :login make_permalink :with => :title, :prepend_id=>true
options for make_permalink:
:with: (required) The attribute that should be used as permalink :field: The name of your permalink column. make_permalink first checks if there is a column. :prepend_id: [true|false] Do you want to prepend the ID to the permalink? for URLs like: posts/123-my-post-title - find_by_param uses the ID column to search. :escape: [true|false] Do you want to escape the permalink value? (strip chars like öä?&?) - actually you must do that
- Alex Sharp (http://github.com/ajsharp) pointed to an issue with STI. Better call make_permalink in every child class and not only in the parent class..
- write nice docs
- write nicer tests
Copyright (c) 2007 [Michael Bumann - Railslove.com], released under the MIT license