Adding line items through asset list portal
I want to view an asset list in a portal and allow the user to click a button next to the asset and add it as a line item. So the assets table would store the twenty different widgets that we sell.
I have attached a GUI design to reference. The asset list has all the blue arrows in it.
It looks like I need two portals, right? How can I view all of the available assets if the line items list is empty? What sort of relationship should exist between the asset table and the line items table?
What scripting trickery needs to happen to deal with these two portals?
Does this make sense?
Thank you in advance for your time. I feel like an idiot; I'm afraid to look this software in the eyes.