Module: CckForms::NeofilesDenormalize::ClassMethods

Defined in:
lib/cck_forms/neofiles_denormalize.rb

Instance Method Summary collapse

Instance Method Details

#neofiles_attrs(obj) ⇒ Object

Returns all fields of Neofiles::File obj to be denormalized



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# File 'lib/cck_forms/neofiles_denormalize.rb', line 13

def neofiles_attrs(obj)
  obj.attributes.with_indifferent_access.except *NEOFILES_LAZY_ATTRS
end

#neofiles_attrs_or_id(obj_or_id, klass = ::Neofiles::File) ⇒ Object

Returns all fields of Neofiles::File to be denormalized or the object ID if the object itself can not be found



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# File 'lib/cck_forms/neofiles_denormalize.rb', line 18

def neofiles_attrs_or_id(obj_or_id, klass = ::Neofiles::File)
  if obj_or_id.present?
    obj, id = if obj_or_id.is_a? klass
                [obj_or_id, nil]
              elsif obj_or_id.is_a?(::String) || obj_or_id.is_a?(::BSON::ObjectId)
                [::Neofiles::File.where(id: obj_or_id).first, obj_or_id.to_s]
              end

    obj.try { |x| neofiles_attrs(x) } || id
  end
end

#neofiles_lazy_loadable(obj) ⇒ Object

Makes obj lazy load fields NEOFILES_LAZY_ATTRS. That is, when these fields are accessed vie getters or read_attribute, make a request to MongoDB to fetch fresh data (all at once)



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# File 'lib/cck_forms/neofiles_denormalize.rb', line 50

def neofiles_lazy_loadable(obj)
  def obj.__lazy_load
    return if @__lazy_loaded
    @__lazy_loaded = true
    from_db = self.class.find(id)
    attributes.merge! from_db.attributes.with_indifferent_access.slice(*NEOFILES_LAZY_ATTRS)
  end

  def obj.read_attribute(field)
    __lazy_load if field.in? NEOFILES_LAZY_ATTRS
    super(field)
  end

  NEOFILES_LAZY_ATTRS.each do |field|
    obj.define_singleton_method field do
      __lazy_load
      super()
    end
  end
end

#neofiles_mock(attrs, klass) ⇒ Object

Constructs a Mongoid::Document of class klass with attrs as if it was a usual document loaded from MongoDB



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# File 'lib/cck_forms/neofiles_denormalize.rb', line 31

def neofiles_mock(attrs, klass)
  Mongoid::Factory.from_db(klass, attrs).tap do |obj|
    neofiles_lazy_loadable obj
  end
end

#neofiles_mock_or_load(attrs_or_id, klass = ::Neofiles::File) ⇒ Object

If attrs_or_id is a Hash, constructs a mock from it. Otherwise, load an object by its ID



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# File 'lib/cck_forms/neofiles_denormalize.rb', line 38

def neofiles_mock_or_load(attrs_or_id, klass = ::Neofiles::File)
  if attrs_or_id.present?
    case attrs_or_id
      when ::String then klass.where(id: attrs_or_id).first
      when ::BSON::ObjectId then klass.where(id: attrs_or_id).first
      when ::Hash then neofiles_mock(attrs_or_id.with_indifferent_access, klass)
    end
  end
end