In a model driven App, if one open an Opportunity Form, there is a sub grid called Products, where if you click on Add Products, a pop up appears where you can select the product and save to opportunity (i think this is out of the box).
i am trying to implement this feature in a canvas app. any help and guidance on this please.
apparently the record is being saved in "Opportunity Products" table.
But i am unable to create the correct patch function in the canvas app for this many to many relationship.
Thank you for your help.