Ruby on Rails：使用关联的id重定向？

Question

I have two tables, lists and ideas where they're in relation to each other.

lists

has_many :ideas 

ideas

belongs_to :lists

I have a text field in my lists page (for my ideas), under localhost:3000/lists/1 and when I click on create idea, it takes me to ideas/1, or ideas/2, etc... and this is all associated to the list id 1. What I'm trying to do is dynamically redirect back to localhost:3000/lists/1

I have this:

redirect_to(:controller => 'lists', :action => 'show')

within my ideas controller.

But this redirect gives me errors because its looking for List with id=#, because the id is being generated with the ideas controller and associated it with my lists page

How do I redirect back to its associated List id? (in this example, it should go back to list/1

Thanks

Answer 1

Two ways to redirect back:

#Method 1
redirect_to @idea.list

#Method 2
redirect_to :back

All should work in your case.