How to set up Rails project to use Slim's pretty print option by default?

Question

I want 'view source' in the browser to show the kind of HTML that would be created by running slimrb from the command line with the -p option.

Answer 1

You can configure Slim to always pretty print your HTML output using the :pretty option, which defaults to false. Using Rails, the easiest place to set this would likely be in an environment file.

From the docs, they show this example adding this code to config/environments/development.rb:

# Indent html for pretty debugging and do not sort attributes
Slim::Engine.set_options pretty: true, sort_attrs: false

Note that using this option is slower (per the documentation), so you'll probably only want to do this in your development environment, as in the example.