Preferable
Simple filtering for ActiveRecord. Sanitizes simple and readable query parameters -great for building APIs & HTML filters.
Installation
Add this line to your Gemfile:
gem "preferable"
Then, bundle:
$ bundle install
Add a new migration to your project. Example:
$ rails g migration AddPreferencesToUsers preferences:text
# Rails 2 & 3.0
class AddPreferencesToUsers < ActiveRecord::Migration
def self.up
add_column :users, :preferences, :text
end
def self.down
remove_column :users, :preferences, :text
end
end
# Rails >=3.1
class AddPreferencesToUsers < ActiveRecord::Migration
def change
add_column :users, :preferences, :text
end
end
Usage Examples:
Specify simple preferences, with defaults:
class User < ActiveRecord::Base
preferable do
integer :theme_id
boolean :newsletter, :default => false
string :font_color, :default => "444444"
end
end
Read and write preferences:
user = User.find(1)
user.preferences[:newsletter] # => false
# Set single preferences (with type casting)
user.preferences[:newsletter] = '1'
user.preferences[:newsletter] # => true
# or, bulk-set (e.g. from forms)
user.preferences = { :newsletter => '1' }
# Makes preferences persistent
user.save
Specify conditions (if/unless):
class User < ActiveRecord::Base
preferable do
string :font_color, :default => "444444", :if => lambda {|v| v =~ /^[A-F0-9]{6}$/ }
end
end
user = User.find(1)
user.preferences[:font_color] = 'INVALID'
user.preferences[:font_color] # => '444444'
Store even arrays (with internal casting):
class User < ActiveRecord::Base
preferable do
array :popular_words, :cast => :string
end
end
user = User.find(1)
user.preferences[:popular_words] = 'hello'
user.preferences[:popular_words] # => ['hello']
License
Copyright (C) 2011 Dimitrij Denissenko
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.