Module: Volt::Associations::ClassMethods

Defined in:
lib/volt/models/associations.rb

Instance Method Summary collapse

Instance Method Details

#belongs_to(method_name, key_name = nil) ⇒ Object 



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# File 'lib/volt/models/associations.rb', line 4

def belongs_to(method_name, key_name=nil)
  # getter
  define_method(method_name) do
    association_with_root_model('belongs_to') do |root|
      # Lookup the associated model id
      lookup_key = send(:"_#{key_name || method_name}_id")

      # Return a promise for the belongs_to
      root.send(:"_#{method_name.pluralize}").where(:_id => lookup_key).fetch_first
    end
  end
end

#has_many(method_name, remote_key_name = nil) ⇒ Object 



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# File 'lib/volt/models/associations.rb', line 17

def has_many(method_name, remote_key_name=nil)
  define_method(method_name) do
    association_with_root_model('has_many') do |root|
      id = self._id

      # The key will be "{this class name}_id"
      remote_key_name ||= :"#{path[-2].singularize}_id"

      root.send(:"_#{method_name.pluralize}!").where(remote_key_name => id)
    end
  end
end