Class: Raccept

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Raccept

Returns a new instance of Raccept.



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

def initialize(app, options = {})
  @app = app
end

Instance Attribute Details

#app ⇒ Object (readonly)

Returns the value of attribute app.



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# File 'lib/raccept.rb', line 8

def app
  @app
end

Instance Method Details

#call(env) ⇒ Object 



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

def call(env)
  result = app.call(env)
  body = result[2]

  # If body is already a string or array with string(s) pass it along.
  return result if legal_rack_body?(body)

  accepts_headers = env['HTTP_ACCEPT'].sub(/\;.+/,'').split(',')
  accepts_headers.each do |accepts|
    if header_list[accepts]
      return [result[0],
              result[1],
              convert(header_list[accepts], body)
             ]
    end
  end
  result # apparently nothing matched, so return untouched result
end

#convert(format, body) ⇒ Object 



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

def convert(format, body)
  case format
  when :json
    body.to_json
  when :xml
    body.to_xml
  end
end

#header_list ⇒ Object 



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# File 'lib/raccept.rb', line 49

def header_list
  {
    'application/json' => :json,
    'text/json'        => :json,
    'application/xml'  => :xml,
    'text/xml'         => :xml
  }
end

#legal_rack_body?(body) ⇒ Boolean

Returns:

  • (Boolean) 


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

def legal_rack_body?(body)
  if body.kind_of?(String)
    true
  elsif body.respond_to?(:each)
    body.collect {|element| element.class }.uniq == [String]
  end
end