Module: LittleMapper::DslClassMethods

Defined in:
lib/little_mapper/dsl_class_methods.rb

Instance Method Summary collapse

Instance Method Details

#add_mapping(m) ⇒ Object 



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# File 'lib/little_mapper/dsl_class_methods.rb', line 24

def add_mapping(m)
  mappings << m
end

#entity(klass = nil) ⇒ Object

Getter/Setter for the Domain Entity to persist.



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# File 'lib/little_mapper/dsl_class_methods.rb', line 5

def entity(klass = nil)
  if klass.nil?
    @_entity
  else
    @_entity = klass
    LittleMapper.register(klass, self)
  end
end

#map(field, opts = {}) ⇒ Object

Add a single mapping.

field - A Symbol, the name of the field to map. opts - A Hash of options to configure the mapper (default: {}):

:as            - The Class of Mapper to use to map an entity
                 value. Can be enclosed in Array notation to
                 signify a one to many relationship
:to            - Name of the field on the persistent entity
                 to which we will map (default: field)
:entity_setter - a Symbol representing the name of a function
                 to use when setting the value on the entity
                 (default: field=)
:entity_collection_adder - in a one-to-many relationship, the name of
                 of a method to use when adding associated objetcs
                 (default: to#<<)

Examples

map :metrics, :as => [Metric]
map :owner, :entity_setter => :assign_owner



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# File 'lib/little_mapper/dsl_class_methods.rb', line 67

def map(field, opts = {})
  add_mapping(mapping_factory.map(self, field, opts))
end

#mapping_factory ⇒ Object 



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# File 'lib/little_mapper/dsl_class_methods.rb', line 32

def mapping_factory
  @_mapping_factory ||= LittleMapper::MappingFactory.new
end

#mapping_factory=(mf) ⇒ Object 



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# File 'lib/little_mapper/dsl_class_methods.rb', line 28

def mapping_factory=(mf)
  @_mapping_factory = mf
end

#mappings ⇒ Object 



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# File 'lib/little_mapper/dsl_class_methods.rb', line 20

def mappings
  @_mappings ||= []
end

#maps(*args) ⇒ Object

Add one or more simple one-to-one mappings.

args - one or more Symbols. The names of the fields to map.

Examples

maps :first_name, :last_name



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# File 'lib/little_mapper/dsl_class_methods.rb', line 43

def maps(*args)
   args.each {|f| map(f)}
end

#persistent_entity(klass = nil) ⇒ Object

Getter/Setter for the (Currently ActiveRecord only) class to use for persistence.



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# File 'lib/little_mapper/dsl_class_methods.rb', line 16

def persistent_entity(klass = nil)
  klass.nil? ? @_persistent_entity :  @_persistent_entity = klass
end