Rails plugin that adds a from_param class method to ActiveRecord::Base for simple URL-based fetching.
mbleigh/from_param
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FromParam ========= This plugin is an addition to ActiveRecord::Base that establishes a better convention for finding records based on parameters. It adds a "from_param" class method to ActiveRecord::Base as a convention for fetching a model from a URL parameter. By default it will find a record based on the to_i of the passed in parameter, but storing a parameter in a column is where it becomes especially useful. If you create a 'param' column in your table (or any other column using set_param_column), the to_param of your record will automatically be saved to that column whenever you save the record, and you will be able to retrieve it using just a simple Model.from_param call with the generated to_param. It is probably wise to add an index to the param column if you use one. It's time to move away from generated-key-dependence, and this plugin is an attempt to make that easy, painless, and work easily within the existing systems. Example ======= # default behavior class User < ActiveRecord::Base def to_param "#{id}-#{first_name.downcase}-#{last_name.downcase}" end end class UsersController < ApplicationController # GET /users/1-bobby-mcfarin def show @user = User.from_param(params[:id]) # => <User id=1 first_name="Bobby" last_name="McFarin"> end end # using a 'param' column, in this case 'slug' class Post < ActiveRecord::Base set_param_column "slug" # defaults to "param" def to_param "#{created_at.strftime("%Y-%m-%d")}-#{title.gsub(" ","-").downcase.gsub(/[^a-z0-9-]/,"")}" end end class PostsController < ApplicationController # GET /posts/2008-04-26-from-param-plugin-released @post = Post.from_param(params[:id]) # => <Post title="From Param: Plugin Released" created_at="2008-04-26"> end Resources ========= GitHub: http://github.com/mbleigh/from_param Lighthouse: http://mbleigh.lighthouseapp.com/projects/10478-from-param Copyright (c) 2007 Michael Bleigh (http://mbleigh.com/) and Intridea Inc. (http://intridea.com/), released under the MIT license
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Rails plugin that adds a from_param class method to ActiveRecord::Base for simple URL-based fetching.
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