Module: Sequel::Plugins::BulkAttributes

Defined in:
lib/sequel_bulk_attributes.rb

Defined Under Namespace

Modules: ClassMethods, DatasetMethods, InstanceMethods

Class Method Summary collapse

Class Method Details

.apply(model, opts = {}, &block) ⇒ Object 



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# File 'lib/sequel_bulk_attributes.rb', line 4

def self.apply(model, opts={}, &block)
  model.plugin(:instance_hooks)
end

.configure(model, opts = {}, &block) ⇒ Object 



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# File 'lib/sequel_bulk_attributes.rb', line 8

def self.configure(model, opts={}, &block)
  model.associations.each do |association|
    association = model.association_reflection(association)
    next unless [:one_to_many].include?(association[:type])

    model.class_eval do
      define_method("#{association[:name]}=") do |list|
        cur = send(association[:name])
        instance_variable_set("@_#{association[:name]}_add", list.reject{ |v| cur.detect{ |v1| v.pk == v1.pk } })
        instance_variable_set("@_#{association[:name]}_remove", cur.reject{ |v| list.detect{ |v1| v.pk == v1.pk } })
        cur.replace(list)

        after_save_hook do
          singular_name = association[:name].to_s.singularize

          instance_variable_get("@_#{association[:name]}_remove").each do |record|
            send("remove_#{singular_name}", record)
          end

          instance_variable_get("@_#{association[:name]}_add").each do |record|
            send("add_#{singular_name}", record)
          end
        end
      end
    end
  end
end