attribution: carry session + campaign identity into shopify orders - #392
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sshane wants to merge 1 commit into
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attribution: carry session + campaign identity into shopify orders#392sshane wants to merge 1 commit into
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The marketing site and the shop are different origins, so Shopify sees none of our attribution: landing_site is just the cart permalink (/cart/c/<token>) and note_attributes is empty on all of the last 250 orders. mc_cid reaches comma.ai fine (1,921 pageviews in 30d) and now survives the harness rewrite, but nothing forwards it into the cart. Capture each inbound touch to localStorage and write it into the cart, where it lands in order.note_attributes and can be queried from the Admin API alone. - first touch is frozen; last touch is overwritten ONLY on a real touch (tracking param or external referrer). A direct return must not clobber an earlier campaign touch -- 67% of buyers convert across more than one session and 33% take more than a day, so that case is the norm. - carts persist in localStorage across visits, so refresh attributes via cartAttributesUpdate at checkout rather than trusting cart-create time. - mc_eid identifies the person on an email click with no form submission; the signup form attaches the email. Both give cross-device stitching that device-local storage cannot. Verified in a browser: campaign touch survives a direct return with no params and no referrer, and cartAttributes() emits distinct_id, session_id, mc_cid and both touch blobs. Not included: the orders/create webhook that posts a purchase event back to PostHog. That closes the funnel and needs somewhere to run.
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deployed preview: https://comma-web--pr392-qpaw773j.web.appWelcome! Make sure to:
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sshane
marked this pull request as draft
September 9, 2026 23:41
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The marketing site and the shop are different origins, so Shopify sees none of our attribution: landing_site is just the cart permalink (/cart/c/) and note_attributes is empty on all of the last 250 orders. mc_cid reaches comma.ai fine (1,921 pageviews in 30d) and now survives the harness rewrite, but nothing forwards it into the cart.
Capture each inbound touch to localStorage and write it into the cart, where it lands in order.note_attributes and can be queried from the Admin API alone.
Verified in a browser: campaign touch survives a direct return with no params and no referrer, and cartAttributes() emits distinct_id, session_id, mc_cid and both touch blobs.
Not included: the orders/create webhook that posts a purchase event back to PostHog. That closes the funnel and needs somewhere to run.