Class: Rack::IframeTransport

Inherits:
Object
  • Object
show all
Defined in:
lib/rack_iframe_transport.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, tag = 'textarea', meta = {}) ⇒ IframeTransport

Returns a new instance of IframeTransport.



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# File 'lib/rack_iframe_transport.rb', line 3

def initialize(app, tag = 'textarea', meta = {})
  @app  = app
  @tag  = tag
  @meta = meta
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args) ⇒ Object (private) 



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# File 'lib/rack_iframe_transport.rb', line 54

def method_missing(method, *args)
  @response.send(method.intern, *args)
end

Instance Method Details

#_call(env) ⇒ Object 



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# File 'lib/rack_iframe_transport.rb', line 13

def _call(env)
  @status, @headers, @response = @app.call(env)
  @request = Rack::Request.new(env)

  if iframe_transport?
    @enclosed_content_type = @headers['Content-Type'] || 'text/html'
    @headers['Content-Type'] = 'text/html'
    [@status, @headers, self]
  else
    [@status, @headers, @response]
  end
end

#call(env) ⇒ Object 



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# File 'lib/rack_iframe_transport.rb', line 9

def call(env)
  dup._call(env)
end

#each(&block) ⇒ Object 



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# File 'lib/rack_iframe_transport.rb', line 26

def each(&block)
  block.call(html_document_left) if iframe_transport?
  @response.each(&block)
  block.call(html_document_right) if iframe_transport?
end

#html_document_left ⇒ Object 



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# File 'lib/rack_iframe_transport.rb', line 36

def html_document_left
  "<!DOCTYPE html><html><body><#{@tag} #{metadata}>"
end

#html_document_right ⇒ Object 



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# File 'lib/rack_iframe_transport.rb', line 40

def html_document_right
  "</#{@tag}></body></html>"
end

#iframe_transport? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rack_iframe_transport.rb', line 32

def iframe_transport?
  @request.params['X-Requested-With'] == 'IFrame'
end

#metadata ⇒ Object 



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# File 'lib/rack_iframe_transport.rb', line 44

def metadata
  meta = @meta.dup
  meta['data-status'] = @response.status if @response.respond_to? :status
  meta['data-statusText'] = @response.status_message if @response.respond_to? :status_message
  meta['data-type'] = @enclosed_content_type
  meta.map {|key,value| "#{key}='#{value}'" }.join(' ')
end