How to use Slim directly in ruby

Question

I would like to create a basic ruby script that renders Slim templates into html (This would eventually be part of a larger project). Ideally I would like to use the HTML produced within the script.

I understand this is possible using TILT (as shown in the SLIM README) where it says the following:

---

Slim uses Tilt to compile the generated code. If you want to use the Slim template directly, you can use the Tilt interface.

 Tilt.new['template.slim'].render(scope)
 Slim::Template.new('template.slim', optional_option_hash).render(scope)
 Slim::Template.new(optional_option_hash) { source }.render(scope)

The optional option hash can have to options which were documented in the section above. The scope is the object in which the template code is executed.

---

However, I'm still unable to successfully run this. Therefore, I was wondering if someone could help me by producing a working example.

EDIT (this has recently been edited further ):

I have played about with the code quite a bit but I keep on getting the following error:

 undefined local variable or method `source' for main:Object (NameError)

This is what i'm running:

require 'slim'

# I'm not sure about the next two lines...
optional_option_hash = {}
scope = Object.new    

Tilt.new('template.slim').render(scope)
Slim::Template.new('template.slim', optional_option_hash).render(scope)
Slim::Template.new(optional_option_hash) { source }.render(scope)    

Many Thanks for all your help.

Answer 1

See Specifying a layout and a template in a standalone (not rails) ruby app, using slim or haml

This is what I ended up using:

require 'slim'

# Simple class to represent an environment
class Env
  attr_accessor :name
end

scope = Env.new
scope.name = "test this layout"

layout =<<EOS
h1 Hello
.content
  = yield
EOS

contents =<<EOS
  = name
EOS

layout = Slim::Template.new { layout }
content = Slim::Template.new { contents }.render(scope)

puts layout.render{ content }

For the scope, you can put in modules/classes or even self.

Answer 2

Quick essentials of

  module SlimRender

    def slim(template, variables = {})
      template = template.to_s
      template += '.slim' unless template.end_with? '.slim'
      template = File.read("#{ROOT}/app/views/#{template}", encoding: 'UTF-8')
      Slim::Template.new { template }.render OpenStruct.new(variables)
    end

  end

Include SlimRender to your class and:

  def render_something
    slim 'streams/scoreboard', scores: '1-2'
  end