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)
  key_name ||= "#{method_name}_id"
  # Add a field for the association_id
  field(key_name)

  # getter
  define_method(method_name) do
    association_with_root_model('belongs_to') do |root|
      # Lookup the associated model id
      lookup_key = get(key_name)

      # Return a promise for the belongs_to
      root.get(method_name.pluralize).where(id: lookup_key).first
    end
  end
end

#has_many(method_name, remote_key_name = nil) ⇒ Object 



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# File 'lib/volt/models/associations.rb', line 21

def has_many(method_name, remote_key_name = nil)
  define_method(method_name) do
    get(method_name.pluralize, true)
  end
end

#has_one(method_name) ⇒ Object

has_one creates a method on the Volt::Model that returns a promise to get the associated model.



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# File 'lib/volt/models/associations.rb', line 29

def has_one(method_name)
  if method_name.plural?
    raise NameError, "has_one takes a singluar association name"
  end

  define_method(method_name) do
    association_with_root_model('has_one') do |root|
      key = self.class.to_s.underscore + '_id'
      root.send(method_name.pluralize).where(key => id).first
    end
  end
end