How to update product metafields automatically after each order based on line items?

In this blog article, we will learn how to update product metafields automatically after each order based on line items.

As an example, let’s take the scenario of a Shopify store that accepts donations for a non-profit organization. For each order, the store wants to update the product metafields with the following information:

• The amount raised so far
• The goal amount of the donation campaign
• Total number of people who donated

The entire flow automation is shown in the image below:

Start with trigger “Order Created”Section titled Start%20with%20trigger%20%u201COrder%20Created%u201D

Click on the trigger and select the “Order Created” trigger by searching for it in Shopify’s inbuilt library of triggers and actions. As of writing this blog article, Shopify exposes 75 triggers and actions.

Connect the trigger to the action “Order LineItems”Section titled Connect%20the%20trigger%20to%20the%20action%20%u201COrder%20LineItems%u201D

Click on the action “Order LineItems” and connect it to the trigger.

Repeat for each item, connect the action “Update Product Metafields”Section titled Repeat%20for%20each%20item%2C%20connect%20the%20action%20%u201CUpdate%20Product%20Metafields%u201D

Click on the action “Update Product Metafields” and connect it to the trigger.

Select the Metafield raised_amount (create it from Settings -> Custom Data -> Add Products Metafield Definition)

Total the existing raised amount metafield value with the original total amount of the order.

{{ lineItemsForeachitem.product.raisedAmount.value | default: 0 | 
plus: 
lineItemsForeachitem.originalTotalSet.shopMoney.amount  }}