Tag products as on sale when a compare at price is added

When a variant gets a compare-at price it did not have before, add the tag on-sale to its product. The trigger carries the compare-at price before and after the change, so a product that was already on sale is not matched again. Use the tag in an automated sale collection.

One trigger, built-in Shopify actions only, no other app needed. Nothing in it is specific to a store, so it works as soon as it is imported.

What it needs

• The app's permission Product, Variant & Collection Data Access. See Permissions and data access.
• Nothing else: turning the workflow on switches the trigger Product Variant Price Changed on in the app.

Install the Workflow Trigger Extensions app and grant Product, Variant & Collection Data Access on its Permissions page. Turning this workflow on switches the trigger on in the app.

Get the workflow

1. Download the .flow file attached at the bottom of this page.
2. In your Shopify admin open Flow, click Import and choose the file.
3. Check the steps, then click Turn on workflow.

The file is an export from Shopify Flow itself. Do not edit it by hand; change the workflow in Flow after importing it.

How it works

1. Product Variant Price Changed fires once per variant whose price or compare-at price changed and carries priceChange with the old and the new compare-at price.
2. The Condition continues when priceChange.oldCompareAtPrice.amount is empty and priceChange.newCompareAtPrice.amount is not empty.
3. Add product tags puts on-sale on the variant's product (productVariant.product.id).

Make it yours

• Build an automated collection on the tag on-sale and your sale page fills itself.
• Import the template that removes the tag when the compare-at price is removed, so the tag ends with the sale.

Next steps

• Product variant triggers, step by step - every field this trigger sends, with more examples.
• Workflow templates - all templates.
• Event history and troubleshooting - check that the trigger fired.