Reviving Your 'How Did You Hear About Us?' Dropdown After a Shopify Theme Migration
Hey everyone! Your friendly Shopify migration expert here, diving into a really common and sometimes frustrating challenge that popped up in the community forums recently. It’s all about those small, but mighty, custom fields that enhance your customer experience and give you vital insights – specifically, the "How did you hear about us?" dropdown.
Our friend @quiztrail brought up a classic scenario: they had a perfectly working "How did you hear about us?" dropdown on their cart page (not checkout, as @tim_1 wisely clarified!) when they were on the old Debut theme. This little gem was feeding valuable source information directly into their order notes, just like a gift message would. But after upgrading to a shiny new theme, poof! The data stopped appearing on the order pages. Sound familiar?
Why Did My Custom Dropdown Break After a Theme Change?
This is a tale as old as time in the Shopify world. When you switch themes, even if your new theme looks similar, the underlying code structure can be wildly different. What worked flawlessly in Debut might not translate directly. As @tim_1 pointed out in the thread, older themes like Debut often wrapped most of the page content inside a single tag. Newer, more modular themes tend to be more specific. They might only wrap the actual product list in the main cart form, and other form-related elements need a special connection.
This "special connection" comes in the form of the form="cart" attribute. If your custom dropdown isn't physically inside the main cart form, it needs this attribute to tell Shopify, "Hey, I belong to the cart form, please process my data with it!" Without this, your dropdown is just a pretty piece of HTML, not actually submitting any data to your order.
The goal, as @quiztrail showed with their screenshots, is to get this information to appear clearly on the order page under the "Notes" section, just like a gift message or other special instructions. This is crucial for understanding your customer acquisition channels!

This is how a gift message appears in the order notes.

And this is how @quiztrail wanted their 'How did you hear about us?' info to show up again.
Two Ways to Reconnect Your "How Did You Hear About Us?" Dropdown
The community discussion brought up two solid approaches, each with slightly different outcomes for how the data appears on your order page. Let's break them down:
Option 1: Storing as a Cart Attribute (The attributes[...] Method)
This method, hinted at by @topnewyork and clarified by @tim_1, is often considered the standard Shopify way to add custom fields to your cart. You add a select element with a specific name attribute (like name="attributes[How did you hear about us?]") and, importantly for newer themes, the form="cart" attribute if it's not nested inside the main cart form.
Here's what @topnewyork suggested for the HTML structure (with @tim_1's crucial form="cart" addition in mind):
This code should be pasted into your main-cart-items.liquid file (or another appropriate section file for your cart page) and saved. The data would then appear on the order page, usually in an "Additional details" section, separate from the main order notes but still clearly visible.
Option 2: Directing to the Cart Note with JavaScript (The note Field Method)
This approach directly addresses @quiztrail's desire to have the information show up in the same "Notes" section as a gift message. It involves a bit more code, specifically some JavaScript, but it's very effective. @mastroke provided an excellent example of this in the thread.
Here's how it works: you create a hidden textarea element that's specifically for the cart's general notes (name="note"). Then, you use JavaScript to listen for changes on your "How did you hear about us?" dropdown. When a customer selects an option, the JavaScript updates the value of that hidden textarea, effectively writing the dropdown's selection into the order notes.
Step-by-Step Instructions for the Cart Note Method:
Step 1: Add the HTML for Your Dropdown and Hidden Note Field
You'll want to add this code to a relevant section file for your cart page. @mastroke suggested main-cart-footer.liquid, which is often a good spot for cart-level custom fields.
Notice the hidden with name="note" and form="cart". This is the magic element that will hold your dropdown's value and pass it to the order notes. The element itself doesn't need a name attribute in this case, as its value is being handled by the JavaScript.
Step 2: Add the JavaScript to Connect the Dropdown to the Note Field
This JavaScript snippet needs to be added somewhere on your cart page, typically within a
This script waits for the page to load, then finds your dropdown (using its class .hear-about-select) and the hidden note field (using its ID #Cart-note). It then adds an "event listener" that triggers every time the dropdown's value changes. When it does, it updates the noteField.value with the selected option, prefixed with "How did you hear about us: " for clarity.
Here's a visual of what it looks like on the cart page:
After implementing these steps and saving your changes, test it thoroughly! Add an item to your cart, select an option from your new dropdown, and complete a test order. Then, check the order details in your Shopify admin to ensure the information appears exactly where you want it to.
Before You Dive Into Code...
Always, and I mean always, duplicate your theme before making any code changes. This gives you a safe rollback point if anything goes sideways. It's like having an undo button for your entire store! Also, remember that every theme is a little different, so while these code snippets are a fantastic starting point from the community, you might need to adjust file paths or element selectors slightly to match your specific theme's structure. If you're unsure, consulting with a Shopify developer or your theme's support can save you a lot of headaches.
It's awesome to see the community rally around these practical problems. The "How did you hear about us?" dropdown is such a powerful tool for understanding your audience and optimizing your marketing efforts, so getting it working after a theme migration is definitely worth the effort. Happy customizing!