Module: MongoMapper::EmbeddedDocument::ClassMethods

Defined in:
lib/mongomapper/embedded_document.rb

Instance Method Summary collapse

Instance Method Details

#add_to_subclasses(*args) ⇒ Object 



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# File 'lib/mongomapper/embedded_document.rb', line 60

def add_to_subclasses(*args)
  return if subclasses.blank?

  subclasses.each do |subclass|
    subclass.key(*args)
  end
end

#embeddable? ⇒ Boolean

Returns:



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# File 'lib/mongomapper/embedded_document.rb', line 78

def embeddable?
  !self.ancestors.include?(Document)
end

#ensure_index(name_or_array, options = {}) ⇒ Object 



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# File 'lib/mongomapper/embedded_document.rb', line 68

def ensure_index(name_or_array, options={})
  keys_to_index = if name_or_array.is_a?(Array)
    name_or_array.map { |pair| [pair[0], pair[1]] }
  else
    name_or_array
  end

  collection.create_index(keys_to_index, options.delete(:unique))
end

#from_mongo(instance_or_hash) ⇒ Object 



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# File 'lib/mongomapper/embedded_document.rb', line 93

def from_mongo(instance_or_hash)
  return nil if instance_or_hash.nil?
  
  if instance_or_hash.is_a?(self)
    instance_or_hash
  else
    new(instance_or_hash)
  end
end

#inherited(subclass) ⇒ Object 



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# File 'lib/mongomapper/embedded_document.rb', line 25

def inherited(subclass)
  unless subclass.embeddable?
    subclass.set_collection_name(collection_name)
  end

  (@subclasses ||= []) << subclass
end

#key(*args) ⇒ Object 



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# File 'lib/mongomapper/embedded_document.rb', line 45

def key(*args)
  key = Key.new(*args)

  if keys[key.name].blank?
    keys[key.name] = key

    create_accessors_for(key)
    add_to_subclasses(*args)
    apply_validations_for(key)
    create_indexes_for(key)

    key
  end
end

#keys ⇒ Object 



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# File 'lib/mongomapper/embedded_document.rb', line 37

def keys
  @keys ||= if parent = parent_model
    parent.keys.dup
  else
    HashWithIndifferentAccess.new
  end
end

#parent_model ⇒ Object 



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# File 'lib/mongomapper/embedded_document.rb', line 82

def parent_model
  (ancestors - [self,EmbeddedDocument]).find do |parent_class|
    parent_class.ancestors.include?(EmbeddedDocument)
  end
end

#subclasses ⇒ Object 



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# File 'lib/mongomapper/embedded_document.rb', line 33

def subclasses
  @subclasses
end

#to_mongo(instance) ⇒ Object 



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# File 'lib/mongomapper/embedded_document.rb', line 88

def to_mongo(instance)
  return nil if instance.nil?
  instance.to_mongo
end