Module: Wrest::Components::AttributesContainer::Typecaster::ClassMethods

Defined in:
lib/wrest/components/attributes_container/typecaster.rb

Instance Method Summary collapse

Instance Method Details

#as_base64Binary ⇒ Object 



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# File 'lib/wrest/components/attributes_container/typecaster.rb', line 73

def as_base64Binary
  ActiveSupport::CoreExtensions::Hash::Conversions::XML_PARSING['base64Binary']
end

#as_boolean ⇒ Object 



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# File 'lib/wrest/components/attributes_container/typecaster.rb', line 77

def as_boolean
  ActiveSupport::CoreExtensions::Hash::Conversions::XML_PARSING['boolean']
end

#as_date ⇒ Object 



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# File 'lib/wrest/components/attributes_container/typecaster.rb', line 85

def as_date
  ActiveSupport::CoreExtensions::Hash::Conversions::XML_PARSING['date']
end

#as_datetime ⇒ Object 



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# File 'lib/wrest/components/attributes_container/typecaster.rb', line 89

def as_datetime
  ActiveSupport::CoreExtensions::Hash::Conversions::XML_PARSING['datetime']
end

#as_decimal ⇒ Object 



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# File 'lib/wrest/components/attributes_container/typecaster.rb', line 81

def as_decimal
  ActiveSupport::CoreExtensions::Hash::Conversions::XML_PARSING['decimal']
end

#as_float ⇒ Object 



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# File 'lib/wrest/components/attributes_container/typecaster.rb', line 93

def as_float
  ActiveSupport::CoreExtensions::Hash::Conversions::XML_PARSING['float']
end

#as_integer ⇒ Object 



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# File 'lib/wrest/components/attributes_container/typecaster.rb', line 97

def as_integer
  ActiveSupport::CoreExtensions::Hash::Conversions::XML_PARSING['integer']
end

#as_symbol ⇒ Object 



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# File 'lib/wrest/components/attributes_container/typecaster.rb', line 101

def as_symbol
  ActiveSupport::CoreExtensions::Hash::Conversions::XML_PARSING['symbol']
end

#as_yaml ⇒ Object 



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# File 'lib/wrest/components/attributes_container/typecaster.rb', line 105

def as_yaml
  ActiveSupport::CoreExtensions::Hash::Conversions::XML_PARSING['yaml']
end

#typecast(cast_map) ⇒ Object

Accepts a set of attribute-name/lambda pairs which are used to typecast string values injected through the constructor. Typically needed when populating an AttributesContainer directly from request params. Typecasting kicks in for a given value only if it is a string.

Typecast information is inherited by subclasses; however be aware that explicitly invoking typecast in a subclass will discard inherited typecast information leaving only the casts defined in the subclass.

Common typecasts such as integer, float, datetime etc. are available through predefined helpers. See TypecastHelpers for a full list.

Example:

class Demon
  include Wrest::Components::AttributesContainer
  include Wrest::Components::AttributesContainer::Typecaster

  typecast         :age          =>  as_integer,
                   :chi          =>  lambda{|chi| Chi.new(chi)}
end

kai_wren = Demon.new('age' => '1500', 'chi' => '1024')
kai_wren.age           # => 1500
kai_wren.chi           # => #<Chi:0x113af8c @count="1024">



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# File 'lib/wrest/components/attributes_container/typecaster.rb', line 59

def typecast(cast_map)
  @typecast_map = @typecast_map ? @typecast_map.merge(cast_map.symbolize_keys) : cast_map.symbolize_keys
end

#typecast_map ⇒ Object

:nodoc:



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# File 'lib/wrest/components/attributes_container/typecaster.rb', line 63

def typecast_map #:nodoc:
  if defined?(@typecast_map)
    @typecast_map
  elsif superclass != Object && superclass.respond_to?(:typecast_map)
    superclass.typecast_map
  else
    {}
  end
end