Module: Riveter::Attributes::Converters

Defined in:
lib/riveter/attributes.rb

Class Method Summary collapse

Class Method Details

.converter_for(data_type, options = {}) ⇒ Object

supply a built-in converter for the given type



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# File 'lib/riveter/attributes.rb', line 431

def self.converter_for(data_type, options={})
  case data_type
  when :string
    lambda {|v, opt| v.to_s }

  when :boolean
    lambda {|v, opt| v.to_b }

  when :integer
    lambda {|v, opt| Integer(v) rescue v }

  when :decimal, :float
    lambda {|v, opt| Float(v) rescue v }

  when :date
    lambda {|v, opt| Date.parse(v) rescue v }

  when :time
    lambda {|v, opt| Time.parse(v) rescue v }

  when :enum
    lambda {|enum, v, opt|
      enum.values.include?(v) ? v : enum.value_for(v)
    }.curry[options[:enum]]

  when :class
    lambda {|models, v, opt|
      models[v] || v
    }.curry[options[:classes].inject({}) {|list, klass| list[klass.name] = klass; list }]

  else # object etc...
    lambda {|v, opt| v }
  end
end