How to use link_to in STI

Question

I have different STI models but want to link to them in a generic way.

The base class is Page and several STI classes are like Book, News etc.

I want the following code link to relevant controller based on the type column on STI

link_to @page.title, @page

For eg. the above code needs to link to book_path if @page is of 'book' type.

How do I do that?

Answer 1

Take a look at Polymorphic Routes . I think this will be what you'll want to use to make this work.

Also, this SO question talks a bit about STI and polymorphic_url .

Answer 2

you could use polymorphic routes

to use it for your use case wher

Base class is Page

the descendants are Books , News

<%= link_to @page.title, polymorphic_path(@page) %>