UrlParam

Yet another rails url parameter column plugin. It’s like all of the others, only it’s mine.

Usage

  #---
  #schema.rb
  create_table "entries", :force => true do |t|
    t.string   "title"
    t.string   "url_param"
    #...
  end
  add_index "entries", ["url_param"], :name => "index_entries_on_url_param"
  
  
  #---
  #entry.rb
  class Entry < ActiveRecord::Base
    generate_url_param_from :title
  end
  
  e = Entry.new :title => 'hello, world'
  e.url_param #=> 'hello-world'
  e.to_param #=> 'hello-world'
  e.save!
  
  #---
  e2 = Entry.create(:title => 'hello,     world').url_param #=> 'hello-world-1'
  
  Entry.create(:title => '! hello world').url_param #=> 'hello-world-2'
  
  Entry['hello-world-2'].title #=> '! hello world'
  Entry.find_by_param('hello-world').title #=> 'hello, world'
  

The only allowable characters in a url param are lowercase letters, numbers, and the hyphen.

If you want to make your own url_param, you can use

  #entry.rb
  class Entry < ActiveRecord::Base
    self.url_param_column = :some_other_column
  end
  
  #---
  
  e = Entry.create :some_other_column => 3
  
  e.to_param #=> '3'
  
  Entry.find_by_param(3).id #=> e.id
  Entry[3].id #=> e.id