Module: ActiveShotgun::Model::Associations::ClassMethods

Defined in:
lib/active_shotgun/model/associations.rb

Instance Method Summary collapse

Instance Method Details

#belongs_to(assoc_name, klass: nil, types: nil, type: nil) ⇒ Object 



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# File 'lib/active_shotgun/model/associations.rb', line 12

def belongs_to(assoc_name, klass: nil, types: nil, type: nil)
  klass ||= assoc_name.to_s.camelize
  types ||= [type].flatten if type
  types ||= [assoc_name.to_s.camelize]
  types = [types].flatten.map(&:to_s)
  # define name_id
  # define name that read and populate the class
  instance_eval do
    # Register the association
    self::BELONG_ASSOC.push(assoc_name)

    # Define the id reader
    attr_reader "#{assoc_name}_id"

    # Define the id writter
    define_attribute_methods("#{assoc_name}_id")
    define_method("#{assoc_name}_id=") do |value, new_type = nil|
      send("#{assoc_name}_id_will_change!")
      if new_type
        unless types.include?(new_type)
          raise "Invalid Type #{new_type}. Valid types are: [#{types.join(', ')}]"
        end

        instance_variable_set("@#{assoc_name}_type", new_type)
      elsif types.size == 1
        instance_variable_set("@#{assoc_name}_type", types.first)
      else
        unless public_send("#{assoc_name}_type")
          raise "Multiple types possible. You must specify a type from [#{types.join(', ')}]"
        end
      end
      instance_variable_set("@#{assoc_name}_id", value)
    end

    # Define the type reader
    attr_reader "#{assoc_name}_type"

    # Define the assoc reader
    define_method(assoc_name) do
      instance_variable_get("@#{assoc_name}") ||
        instance_variable_set(
          "@#{assoc_name}",
          (klass.is_a?(String) ? klass.constantize : klass).
          parse_shotgun_results(
            Client.
            shotgun.
            entities(public_send("#{assoc_name}_type")).
            find(public_send("#{assoc_name}_id"))
          )
        )
    end

    define_method("#{assoc_name}=") do |assoc_item|
      public_send("#{assoc_name}_id=", assoc_item.id, assoc_item.class.shotgun_type)
      instance_variable_set("@#{assoc_name}", assoc_item)
    end
  end
end

#has_many(assoc_name_plural, possible_types: nil) ⇒ Object 



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# File 'lib/active_shotgun/model/associations.rb', line 71

def has_many(assoc_name_plural, possible_types: nil)
  assoc_name = assoc_name_plural.to_s.singularize
  possible_types ||= {
    assoc_name.camelize => assoc_name.camelize,
  }
  if possible_types.is_a?(Array)
    possible_types.map do |type|
      [
        type.camelize,
        type.camelize,
      ]
    end.to_h
  end
  # define name that read and populate an array of (a query ?)

  instance_eval do
    # Register the association
    self::MANY_ASSOC.push(assoc_name_plural)

    # Define reader must return an AssociationQuery which override push/<</delete with instant remove/add
    define_method(assoc_name_plural) do
      instance_variable_get("@#{assoc_name_plural}") ||
        instance_variable_set(
          "@#{assoc_name_plural}",
          AssociationsProxy.new(
            possible_types: possible_types,
            base_class: self.class,
            base_id: id,
            field_name: assoc_name_plural
          ).where(
            [
              self.class.shotgun_type.downcase.to_s.pluralize,
              "is",
              {
                type: self.class.shotgun_type.camelize,
                id: id,
              },
            ]
          )
        )
    end

    # Define writer
    define_attribute_methods(assoc_name_plural)
    define_method("#{assoc_name_plural}=") do |array|
      send("#{assoc_name_plural}_will_change!")
      instance_variable_set("@#{assoc_name_plural}", array)
    end
  end
end