How to Add simple tick box to checkout/cart?

Store Design

Topic summary

Goal: Add an opt-in checkbox in a Shopify store (Venture theme) to allow customers to consent to being contacted about their experience with a product.

Context: The poster used the UI Elements Generator to create code but is unsure where in the theme to insert it (checkout vs. cart). They are likely aiming for a cart attribute implementation.

Provided code: A

block with:

  • A hidden input defaulting the attribute to “No”.
  • A checkbox setting the attribute to “Yes”, with a Liquid condition to keep it checked if previously selected.
  • A label explaining the consent purpose. The attribute key is a long descriptive sentence.

Status: No guidance or solution provided yet; question remains open about the correct file/location in the Venture theme to place this code.

Notes: The code snippet is central to understanding the request.

Summarized with AI on December 31. AI used: gpt-5.
1

I’ve read through a few posts asking about these, but am unsure how to do these for the Venture theme that we currently use on the store.

I want to add code like this to the checkout or the cart so people can opt in to be contacted about one of our products. I did use some code off the UI elements generator, but where do I need to put this in our current theme?

2

This was the code I intended to add:

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