Implementing twitter-like hashtag on rails

I'm want to implement twitter-like hashtag on my app.

Let's say I have user input to a text area "I'm coming to #london from #paris" then I want to build tag cloud of the hashtags.

I'm thinking of using acts-as-taggable-on. So I find all of my hashtags from the text in the backend, then save it to tag field.

Anyone has exper开发者_JAVA百科ience on this they would like to share? Thanks.

Yes, ActsAsTaggableOn should be fine. As @etang alluded to, it's a heavy gem, but it gets the job done. If you're looking for a simple way to extract tags from text, you may want to look at https://github.com/twitter/twitter-text-rb. It has some nice regexps that may save you some time.

Twitter::Extractor.extract_hashtags("my #favorite #site is http://foo.com/home#boo")

That would return "favorite" and "site" but not "boo" (as would be expected).

For late-comers…

I have written a simple gem for precisely for this:
https://github.com/ralovely/simple_hashtag

Give feedback or contribute if you feel like it.

ActsAsTaggableOn should work fine if you are not too worried about scaling. It keeps track of your actual tags by ActsAsTaggableOn::Tag, and keeps track of the many-to-many relationship to your posts by ActsAsTaggableOn::Tagging. It also uses polymorphic association in ActsAsTaggableOn::Tagging so you can tag in different namespaces.