Two-way product link
This exntesion performs bi-directional linking of related products when such associations are made. Natively, Magento's related products associations are one-way., (*1)
For example, if Product B is associated as a related product to Product A, then this extension automatically associates Product A to Product B as well. This is called a bi-directional link. This is works only in the admin., (*2)
Additionally, mass link actions, union-link and join-link, are available. A union-link associates all of the products selected to each other, and any other products that are associated indirectly., (*3)
A join-link associates only the explicitly selected products, and removes any other associations., (*4)
Simply associate related products from the admin, and the bi-directional link will be made., (*5)
Additionally, union- and join-links can be made through the mass-action on the Manage Product page., (*6)
Logging can be enabled for debugging., (*7)
Copy the extension files to the appropriate directories and enable the extension from System > Configuration > Catalog > Two-Way Relation. It is disabled by default., (*8)
Alternatively, use the extension manager, modman
., (*9)
cd /path/to/magento/ modman init modman clone https://github.com/younkim/Magento-TwoWayLink.git
This feature works only in the admin., (*10)