Module: Sinatra::RespondTo

Defined in:
lib/sinatra/respond_to.rb,
lib/sinatra/respond_to/version.rb

Defined Under Namespace

Modules: Helpers Classes: MissingTemplate, UnhandledFormat

Constant Summary collapse

Version = 
'0.6.0'

Class Method Summary collapse

Class Method Details

.registered(app) ⇒ Object 



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# File 'lib/sinatra/respond_to.rb', line 19

def self.registered(app)
  app.helpers RespondTo::Helpers

  app.set :default_content, :html
  app.set :assume_xhr_is_js, true

  # We remove the trailing extension so routes
  # don't have to be of the style
  #
  #   get '/resouce.:format'
  #
  # They can instead be of the style
  #
  #   get '/resource'
  #
  # and the format will automatically be available in <tt>format</tt>
  app.before do
    # Let through sinatra image urls in development
    next if self.class.development? && request.path_info =~ %r{/__sinatra__/.*?.png}

    unless options.static? && options.public? && (request.get? || request.head?) && static_file?(request.path_info)
      if request.params.has_key? 'format'
        format params['format']
      else
        # Sinatra relies on a side-effect from path_info= to
        # determine its routes. A direct string change (e.g., sub!)
        # would bypass that -- and fail to have the effect we're looking
        # for.
        request.path_info = request.path_info.sub %r{\.([^\./]+)$}, ''

        # Thanks to Sinatra, users can call:
        #
        #    set :default_content, :foo
        #    set :default_content, proc { :foo }
        #    set :default_content, proc { |bar| :foo }
        #
        # And get the same result from options.default_content(request).
        _format   = options.assume_xhr_is_js? ? :js : $1 if request.xhr?
        _format ||= options.default_content(request)

        format _format
      end
    end
  end

 app.configure :development do |dev|
    dev.error UnhandledFormat do
      content_type :html, :charset => 'utf-8'

      (<<-HTML).gsub(/^ {10}/, '')
      <!DOCTYPE html>
      <html>
      <head>
        <style type="text/css">
        body { text-align:center;font-family:helvetica,arial;font-size:22px;
          color:#888;margin:20px}
        #c {margin:0 auto;width:500px;text-align:left}
        </style>
      </head>
      <body>
        <h2>Sinatra doesn't know this ditty.</h2>
        <img src='/__sinatra__/404.png'>
        <div id="c">
          Try this:
          <pre>#{request.request_method.downcase} '#{request.path_info}' do\n  respond_to do |wants|\n    wants.#{format} { "Hello World" }\n  end\nend</pre>
        </div>
      </body>
      </html>
      HTML
    end

    dev.error MissingTemplate do
      content_type :html, :charset => 'utf-8'
      response.status = request.env['sinatra.error'].code

      engine = request.env['sinatra.error'].message.split('.').last
      engine = 'haml' unless ['haml', 'builder', 'erb'].include? engine

      path = File.basename(request.path_info)
      path = "root" if path.nil? || path.empty?

      format = engine == 'builder' ? 'xml' : 'html'

      layout = case engine
               when 'haml' then "!!!\n%html\n  %body= yield"
               when 'erb' then "<html>\n  <body>\n    <%= yield %>\n  </body>\n</html>"
               when 'builder' then "xml << yield"
               end

      layout = "<small>app.#{format}.#{engine}</small>\n<pre>#{escape_html(layout)}</pre>"

      (<<-HTML).gsub(/^ {10}/, '')
      <!DOCTYPE html>
      <html>
      <head>
        <style type="text/css">
        body { text-align:center;font-family:helvetica,arial;font-size:22px;
          color:#888;margin:20px}
        #c {margin:0 auto;width:500px;text-align:left;}
        small {float:right;clear:both;}
        pre {clear:both;}
        </style>
      </head>
      <body>
        <h2>Sinatra can't find #{request.env['sinatra.error'].message}</h2>
        <img src='/__sinatra__/500.png'>
        <div id="c">
          Try this:<br />
          #{layout}
          <small>#{path}.#{format}.#{engine}</small>
          <pre>Hello World!</pre>
          <small>application.rb</small>
          <pre>#{request.request_method.downcase} '#{request.path_info}' do\n  respond_to do |wants|\n    wants.#{engine == 'builder' ? 'xml' : 'html'} { #{engine} :#{path}#{",\n#{' '*32}layout => :app" if layout} }\n  end\nend</pre>
        </div>
      </body>
      </html>
      HTML
    end

  end

  app.class_eval do
    # Changes in 1.0 Sinatra reuse render for layout so we store the
    # original value to tell us if this is an automatic attempt to do a
    # layout call.  If it is, it might fail with Errno::ENOENT and we want
    # to pass that back to sinatra since it isn't a MissingTemplate error
    alias :render_without_format :render
    def render(*args, &block)
      assumed_layout = args[1] == :layout
      args[1] = "#{args[1]}.#{format}".to_sym if args[1].is_a?(::Symbol)
      render_without_format *args, &block
    rescue Errno::ENOENT => e
      raise MissingTemplate, "#{args[1]}.#{args[0]}" unless assumed_layout
      raise e
    end
    private :render
  end
end