class SuperMapper - super_mapper-0.3.0 Documentation

Public Class Methods

new() { |self| ... } click to toggle source

# File lib/super_mapper.rb, line 6
def initialize
  yield self if block_given?
end

Public Instance Methods

define_mapping(source_class, target_class, &block) click to toggle source

Define a new mapping schema from a source class, mapping getters to setters

@param [Class] source_class the class that will act as the source for this mapping definition

# File lib/super_mapper.rb, line 14
def define_mapping source_class, target_class, &block
  mapping_registry["#{source_class}-#{target_class}"] = block
end

map(source, target) click to toggle source

Maps a source object to a target object using previously registered mappings

@param [Object] source the source object @param [Object | Class] target the target object or class. If a class is given, it should have a no-args constructor since the new instance will be created calling target.new @return [Object] the target object, or a new instance of the target class, filled with values coming from the source

# File lib/super_mapper.rb, line 24
def map source, target
  return if source.nil?

  raise ArgumentError, 'target cannot be nil' if target.nil?
  
  target.is_a?(Class) ? map_object(source, target.new) : map_object(source, target)
end

Private Instance Methods

map_object(source, target) click to toggle source

# File lib/super_mapper.rb, line 38
def map_object source, target
  mapping_proc = mapping_registry["#{source.class}-#{target.class}"]
  mapping_proc.call source, target
  target
end

mapping_registry() click to toggle source

# File lib/super_mapper.rb, line 34
def mapping_registry
  @mapping_registry ||= {}
end