I need help implementing a pos system

[robhblake]

Yep this is a common question. My suggested solution below:

Tutorial: Total up a repeating group (no plugins required)

Sum up calculations in a repeating group to get a total outside the RG, using custom states. Setup time: 5 mins. Here’s an example of a shopping cart: Demo and Editor. Steps: Add a custom state in the RG for the current sub-total; Add another custom state in the RG to track the previous value; Add a custom state outside the RG to hold the grand total; Set up a workflow when one (or either) of the inputs change: – Set the value of the “subtotal” custom state = price * quantity (val…

Rob