.json.rabl not showing in view for Rails app

Question

Trying to get User model to print to JSON, tried making a file with a json.rabl extension as follows:

file.json.rabl

object @users

attributes :id, :name

When I try to view this, I get the following error message:

Missing template users/autocomplete, application/autocomplete with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee, :rabl, :rb]}. 

However, if I rename the file to file.rabl, it renders the JSON, but in an HTML page instead. How do I get it to print a pure JSON file?

Here is my controller code for the file view:

def file
@users = User.all
respond_to do |format|
format.html
format.json
end

Answer 1

Just had to add .json to the URL.