NoNo

NoNo is a simple black-list profanity filter. Given a list of fields to check against, NoNo will ensure no content with any profanity is entered into the system.

Latest stable release:

gem "NoNo"

In the model you want to check for profanity its as simple as one line in the model.

class Article < ActiveRecord::Base
  check_profanity
  attr_accessible :body, :title
end

This will ensure no record will be saved into the system.

$ > Article.create(title: "<p>boob</p>", body: "<p><em>b</em>oob</p>")
$ (0.1ms)  begin transaction
$ (0.1ms)  rollback transaction
$  => #<Article id: nil, title: "<p>boob</p>", body: "<p><em>b</em>oob</p>", created_at: nil, updated_at: nil> 

This also strips all HTML tags to check againsts the literal text to prevent any work arounds to the filter.

To add or remove words from the filter simply override or extend the array in lib/nono/banned_word.rb

Extend functionality to allow for records to be saved, but simply overriden with *'s.