Module: Sinatra::RespondTo

Defined in:
lib/sinatra/respond_to.rb

Defined Under Namespace

Modules: Helpers Classes: MissingTemplate, UnhandledFormat

Constant Summary collapse

TEXT_MIME_TYPES = 
[:txt, :html, :js, :json, :xml, :rss, :atom, :css, :asm, :c, :cc, :conf,
:csv, :cxx, :diff, :dtd, :f, :f77, :f90, :for, :gemspec, :h, :hh, :htm,
:log, :mathml, :mml, :p, :pas, :pl, :pm, :py, :rake, :rb, :rdf, :rtf, :ru,
:s, :sgm, :sgml, :sh, :svg, :svgz, :text, :wsdl, :xhtml, :xsl, :xslt, :yaml,
:yml, :ics, :png]

Class Method Summary collapse

Class Method Details

.registered(app) ⇒ Object 



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# File 'lib/sinatra/respond_to.rb', line 26

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

  app.set :default_charset, 'utf-8'
  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

    response['Content-Type'] = '' 
    
    # 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)
      rpi = request.path_info.sub(%r{\.([^\./]+)$}, '')

      if (not $1) or ($1 and TEXT_MIME_TYPES.include?($1.to_sym))
        request.path_info, ext = rpi, nil
        if ! $1.nil?
          ext = $1
        elsif env['HTTP_ACCEPT'].nil? || env['HTTP_ACCEPT'].empty?
          ext = options.default_content
        end
        if ext
          @mime_types = [ Helpers::mime_type(ext) ]
          format ext
        end
      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 ::Sinatra::VERSION =~ /^1.0/ ? "xml << yield" : "builder do |xml|\n  xml << yield\nend"
               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
    private
      def accept_list
        @mime_types || Rack::AcceptMediaTypes.new(env['HTTP_ACCEPT'] || '')
      end

      # 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
      def render_with_format(*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
      alias_method :render_without_format, :render
      alias_method :render, :render_with_format

      if ::Sinatra::VERSION =~ /^0\.9/
        def lookup_layout_with_format(*args)
          args[1] = "#{args[1]}.#{format}".to_sym if args[1].is_a?(::Symbol)
          lookup_layout_without_format *args
        end
        alias_method :lookup_layout_without_format, :lookup_layout
        alias_method :lookup_layout, :lookup_layout_with_format
      end
  end
end