Loop

Introduction

The Loop action allows you to process items in an array data source one by one. Only remote data sources and select views are supported as data sources. This feature is ideal for tasks such as updating database entries or calculating the total value of a shopping cart.

How to Configure

Below is an example of calculating the total value of a shopping cart:

1. Add a Page Variable
   Add an “Arbitrary Precision Decimal” page variable to temporarily store the calculation result. Set its initial value to zero. If the default does not work, set it to zero during page load.

Add Page Variable	Set Variable to Zero

2. Add a Data Source
   On the page, set up a table as a data source so the page can request shopping cart data, filtered by the current user’s ID as the buyer.

3. Configure the Loop Action
   After successfully retrieving the data, configure a loop action. For each item, multiply its “purchase quantity” by its “price,” and add the result to the running total stored in the page variable.

   • Example Calculation: Start with the total at 0. If the first cart item’s quantity is 2 and price is 100, the total becomes 200. If the next item has a quantity of 3 and price of 200, the new total becomes 800.
   • Further Operations: During the loop, each data item from the remote source can be accessed via “Item Data” for additional processing.