We're trying to have it so that on a product display there are optional extras which can be added all at the same time as the main product by selecting checkboxes. These products are optional extras which are product specific.
We have tried the Commerce Product Add On module but it breaks with an ajax error when there is more than one main product variation and another option is selected on the product display front end.
We are trying to debug the error but we are also wondering if this can be created using something which already exists such as views bulk operations and rules. Any help would be much appreciated!