Module: Sinatra::Params

Defined in:
lib/sinatra/params.rb,
lib/sinatra/params/version.rb,
lib/sinatra/params/configuration.rb

Defined Under Namespace

Modules: Configuration

Constant Summary collapse

VERSION = 
'1.0.7'

Instance Method Summary collapse

Instance Method Details

#param(name, type, args = {}) ⇒ Object 



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# File 'lib/sinatra/params.rb', line 27

def param (name, type, args = {})
  params.define_singleton_method(name.to_sym) { self[name] }

  present = !params[name].nil?

  raise ParameterNotFoundError(name) unless present or args[:optional]

  if params[name].class == type
    # Do nothing

  elsif Conversion.respond_as[type] and params[name].respond_to? Conversion.respond_as[type]
    params[name] = params[name].send(Conversion.respond_as[type])
  elsif Conversion.convert[params[name].class] and Conversion.convert[params[name].class].key? type
    params[name] = Conversion.convert[params[name].class][type].call(params[name])
  else
    raise ParameterNotFoundError(name) unless args[:optional]
  end

  return unless present

  raise ParameterOutOfRangeError(name) if args[:in] and not args[:in].include? params[name]
  raise ParameterOutOfRangeError(name) if args[:max] and args[:max] < params[name]
  raise ParameterOutOfRangeError(name) if args[:min] and params[name] < args[:min]
end