Ruby on Rails : symbol as argument in form_for?

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I understand what is passed to the form_for method when doing something like : ... if @user is set in the controller. This is pretty obvious. But what happens when we pass :user, as I have seen in many examples?

... When should I use the symbol version? Ruby-on-rails form-for link|improve this question edited Jan 5 '10 at 13:50 asked Jan 5 '10 at 13:41subtenante4,31712960 92% accept rate.

Using the symbol will generate: Using the object @user set to new you get: If you set @user to something else it will change the form tag generated, of course ... try it out for yourself. In the end it all depends what you're trying to do. You might want to use the symbol if you have multiple :user forms on the same page.

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