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.

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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).

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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.

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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.