How do I get previous step's output in my action?

Shopify Flow
1

variant flow
variant flow1786×1039 65.9 KB

I would like to do something with the variant id when a variant id is added. My action is set up with the following:

  [[settings.fields]]
  type = "product_reference"
  required = true

But that only provides the product reference. I am not sure how to access the previous step’s output (from product variant added)? Can someone point me to the right documentation or some code to access the data in the payload?

Thanks.

2

You can’t get the previous step as the previous step would be different in many workflows and really irrelevant for any action.

You can ask for data that your action needs to run. Are you saying your action requires a variant and not a product?

3

Yes, that’s correct. I would like to get the variant id. Would you be able to provide me with toml example on how that is done?

4

Screenshot 2025-02-25 120518
Screenshot 2025-02-25 1205181433×824 33 KB

I tested with the ‘Log Output’ and ‘Run Code’ block and clearly the variant is available. I just want to be able to use the variant id in our own action and I can’t figure out how to do this from the documentation.

Thanks.

5 
    [[settings.fields]]
  type = "single_line_text_field"
  key = "variant"
  name = "variant"
  description = "{{productVariant.id}}"
  required = true

I ended up getting the idea to add a field and ask the user to add ‘{{productVariant.id}}’. I wish there is a way to do this without having to ask the user to enter value. Maybe by hiding the field with a default value and also without relying on liquid code… something similar to the ‘Run Code’ block input.

6

Sorry for the delay in responding. Yeah, this will work, with the downside that Flow doesn’t automatically fill in it for merchants. We do want to add more sources like variants to our actions, so this they can be auto-filled

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