Class: Stache::Handler

Inherits:
Object
  • Object
show all
Includes:
Util.av_template_class(:Handlers)::Compilable
Defined in:
lib/stache/handler.rb

Overview

From HAML, thanks a bunch, guys! In Rails 3.1+, template handlers don’t inherit from anything. In <= 3.0, they do. To avoid messy logic figuring this out, we just inherit from whatever the ERB handler does.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.call(template) ⇒ Object

In Rails 3.1+, #call takes the place of #compile



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# File 'lib/stache/handler.rb', line 47

def self.call(template)
  new.compile(template)
end

Instance Method Details

#compile(template) ⇒ Object

Thanks to Mustache::Rails3 for getting us most of the way home here



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# File 'lib/stache/handler.rb', line 13

def compile(template)
  #
  # get a custom Mustache, or the default Stache::View
  mustache_class = mustache_class_from_template(template)

  # Return a string that will be eval'd in the context of the ActionView, ugly, but it works.
  <<-MUSTACHE
    mustache = ::#{mustache_class}.new
    mustache.view = self
    mustache.template = '#{template.source.gsub(/'/, "\\\\'")}'
    mustache[:yield] = content_for(:layout)
    mustache.context.update(local_assigns)
    variables = controller.instance_variable_names
    variables -= %w[@template]
  
    if controller.respond_to?(:protected_instance_variables)
      variables -= controller.protected_instance_variables
    end
  
    variables.each do |name|
      mustache.instance_variable_set(name, controller.instance_variable_get(name))
    end
  
    # Declaring an +attr_reader+ for each instance variable in the
    # Stache::View subclass makes them available to your templates.
    mustache.class.class_eval do
      attr_reader *variables.map { |name| name.sub(/^@/, '').to_sym }
    end

    mustache.render.html_safe
  MUSTACHE
end

#mustache_class_from_template(template) ⇒ Object

suss out a constant name for the given template



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# File 'lib/stache/handler.rb', line 52

def mustache_class_from_template(template)
  const_name = ActiveSupport::Inflector.camelize(template.virtual_path.to_s)
  begin
    const_name.constantize
  rescue NameError
    Stache::View
  end
end