Rails - in controller, how to render an action from a different controller? - ruby-on-rails

Question

I have a page where is displayed information about a respective car (it's a controller cars, action show). On this page, I render _form from the controller called reviews.
When I send out the form (through AJAX), the review is successfully created, but I am not able from the reviews controller render any action from the cars controller - to be more specific, here's the code:
# reviews_controller
def create
#review = Review.new(review_params)
#review.save
#respond_with(#review)
respond_to do |format|
format.js { render :action => "/cars/car_profile" }
end
end
The error I get:
ActionView::MissingTemplate (Missing template reviews/cars/car_profile, application/cars/car_profile with {:locale=>[:en], :formats=>[:js, :html], :variants=>[], :handlers=>[:erb, :builder, :raw, :ruby, :coffee, :haml, :jbuilder]}. Searched in:
* "/Users/adam/rubydev/claisy/app/views"
* "/Users/adam/.rvm/gems/ruby-2.0.0-p481/gems/devise-3.4.1/app/views"
):
app/controllers/reviews_controller.rb:28:in `block (2 levels) in create'
app/controllers/reviews_controller.rb:27:in `create'
How can I render in controller an action that is located in a different controller?
Thank you in advance.

Answer 1

:action forces rails to search for templates within the current controller view folder.
Missing template reviews/cars/car_profile
You should write this instead
render "cars/car_profile"
See point 2.2.3
What if you want to render a template from an entirely different
controller from the one that contains the action code? You can also do
that with render, which accepts the full path (relative to app/views)
of the template to render.