PiggybakVariants Gem (Engine) --- This is a custom fork
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Advanced variant support for Piggybak.
This variant gem varies from the original piggybak_variants gem found here
This gem is based of sprees variant modeling system which is talked about in End Points Blog. You can read more about it here.
You no longer need to have subclasses for each type of product. You can have one product model. and each product has many variants and many options.
In your Gemfile add gem "piggybak_variants"
Run bundle install
Run rake piggybak_variants:install:migrations
Migrate the DB rake db:migrate
Add acts_as_sellable_with_variants to any model that should have variants (like your Product model).
Add attr_accessable :piggybak_sellables_attributes, :piggybak_variants_attributes to your sellable model. I didn't think you should have to add :piggybak_sellable_attributes to the sellable model since its included in the acts_as_sellable_with_variants.rb class in the gem. But its the only way I've found to not get random errors with the <%= variants_cart_form(@instance) %> form helper.
In the admin, define option configurations and option values for each option, then create variants for your sellable instances.
Finally, add <%= variant_cart_form(@instance) %> to your sellable item's show page to render the cart form.
OPTION: <%= variant_cart_form(@instance, :controls => 'dropdowns') %> to render dropdowns instead of radio buttons.
So either add that line, or if you already have it enabled just add piggybak_variants/piggybak_variants.js to the array of values.
Copyright (c) 2013 End Point. See LICENSE for further details.