File actionpack/lib/action_view/base.rb, line 255

base.rb

  def render(options = {}, local_assigns = {}, &block) #:nodoc:
      local_assigns ||= {}

      case options
      when Hash
        options = options.reverse_merge(:locals => {})
        if options[:layout]
          _render_with_layout(options, local_assigns, &block)
        elsif options[:file]
          template = self.view_paths.find_template(options[:file], template_format)
          template.render_template(self, options[:locals])
        elsif options[:partial]
          render_partial(options)
        elsif options[:inline]
          InlineTemplate.new(options[:inline], options[:type]).render(self, options[:locals])
        elsif options[:text]
          options[:text]
        end
      when :update
        update_page(&block)
      else
        render_partial(:partial => options, :locals => local_assigns)
      end
    end