Tracking purchase of particular product on different sites
问题 I have a website on which other websites owner can list their products. For listing the product they need to manually create the product by providing title , description , image and link of products. When any user will visit my website he will be able to view these products and on click of any product he will be redirected to the owner's website and purchase will be done on his website. Now I need to build a functionality by which I can track the complete transaction of the sale of that