New language_filter gem

[chrisvfritz]

Just wanted to give a heads up that I was looking at this and other Ruby profanity filters for work and wasn't finding what I needed, so ended up rolling my own language_filter gem, which works much better for my needs, including:

• The ability to create multiple, independently configured filter instances
• Simpler configuration
• Multiple pre-prackaged matchlists (i.e. blacklists) for language type discrimination (hate, profanity, sex, and violence)
• More robust exceptionlist (i.e. whitelist) handling
• And more in the gem's README...

It doesn't include active model integration yet, so instead of profanity_filter :foo, :bar in your Rails model, you'd currently have to have something like:

before_save :clean_up_language

def clean_up_language
  filter = LanguageFilter::Filter.new matchlist: :profanity, replacement: :stars
  foo = filter.sanitize(foo)
  bar = filter.sanitize(bar)
end

So there's still a lot of room for extensibility that I just haven't had time for or had use for yet, but I think it's a more flexible and robust base to work off for most use cases. Hope others find it useful. :-)

(Oh - and development was a bit rushed, so it wasn't test-driven unfortunately. I'll be writing a test suite soon.)