Rails Patch to obtain a current template

There are 3 types of rendering: Normal, Partial, and Layout.

We have to hook all 3 types.

The template is stored in @last_template.

module ActionView::Rendering 
  alias_method :_render_template_original, :_render_template
  def _render_template(template, layout = nil, options = {}) 
    @last_template = template
    _render_template_original(template, layout, options)
  end
end

module ActionView::Layouts
  alias_method :_render_layout_original, :_render_layout
  # Contains the logic that actually renders the layout.
    def _render_layout(layout, locals, &block) #:nodoc:
      @last_template = layout
      
      _render_layout_original(layout, locals, &block)
    end
end

module ActionView::Partials
  alias_method :_render_partial_original, :_render_partial

  def _render_partial(options, &block) #:nodoc:
    
    prefix = self.controller_path unless options[:partial].include?(?/)
    @last_template = self.find_template(options[:partial], prefix, true)
    
    _render_partial_original(options, &block)
    
  end
  
end