To return a 404 header, just use the :status option for the render method. If you want to render the standard 404 page you can extract the feature in a method.
Don’t render 404 yourself, there’s no reason to; Rails has this functionality built in already. If you want to show a 404 page, create a render_404 method (or not_found as I called it) in ApplicationController like this:
1 2 3 | def not_found raise ActionController::RoutingError.new('Not Found') end |
Rails also handles AbstractController::ActionNotFound, and ActiveRecord::RecordNotFound the same way. This does two things better:
1) It uses Rails’ built in rescue_from handler to render the 404 page, and 2) it interrupts the execution of your code, letting you do nice things like:
1 2 | user = User.find_by_email(params[:email]) or not_found user.do_something! |
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