fix(surveys): only auto-submit on pageload for questoins with auto-submit enabled (hosted surveys) #2790

adboio · 2025-12-18T19:21:48Z

Problem

right now, for hosted surveys, we auto-submit survey responses for prefilled q's on pageload if:

partial responses are enabled
OR survey is complete

this is almost correct, but does not match the rest of the logic we have...

hosted surveys will skip questions that are 1) prefilled and 2) have auto-submit enabled for that question.

the auto-submit on pageload logic does not consider whether the question has auto-submit enabled, so survey responses are being sent when they shouldn't. this is particularly problematic for email clients pre-fetching links (PR to add optional captcha soon)

Changes

updates logic to only auto-submit questoins that were already skipped in the UI

Release info Sub-libraries affected

Libraries affected

Checklist

Tests for new code
Accounted for the impact of any changes across different platforms
Accounted for backwards compatibility of any changes (no breaking changes!)
Took care not to unnecessarily increase the bundle size

If releasing new changes

Ran pnpm changeset to generate a changeset file
Added the "release" label to the PR to indicate we're publishing new versions for the affected packages

vercel · 2025-12-18T19:21:50Z

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Review	Updated (UTC)
posthog-js	Error		Dec 18, 2025 7:58pm
posthog-nextjs-config	Ready	Preview	Dec 18, 2025 7:58pm

adboio · 2025-12-18T19:22:08Z

This stack of pull requests is managed by Graphite. Learn more about stacking.

github-actions · 2025-12-18T19:26:18Z

Download bundle size visualization

github-actions · 2025-12-18T19:29:57Z

Size Change: +648 B (+0.01%)

Total Size: 5.3 MB

Filename	Size	Change
`packages/browser/dist/all-external-dependencies.js`	229 kB	+92 B (+0.04%)
`packages/browser/dist/array.full.es5.js`	306 kB	+96 B (+0.03%)
`packages/browser/dist/array.full.js`	375 kB	+92 B (+0.02%)
`packages/browser/dist/array.full.no-external.js`	390 kB	+92 B (+0.02%)
`packages/browser/dist/module.full.js`	375 kB	+92 B (+0.02%)
`packages/browser/dist/module.full.no-external.js`	391 kB	+92 B (+0.02%)
`packages/browser/dist/surveys.js`	85.2 kB	+92 B (+0.11%)

ℹ️ View Unchanged

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_{compressed-size-action}

…bmit enabled (hosted surveys)

vercel bot had a problem deploying to Preview – posthog-js December 18, 2025 19:26 Failure

vercel bot deployed to Preview – posthog-nextjs-config December 18, 2025 19:27 View deployment

adboio requested a review from a team December 18, 2025 19:38

adboio added the release label Dec 18, 2025 — with Graphite App

fix(surveys): only auto-submit on pageload for questoins with auto-su…

06fc516

…bmit enabled (hosted surveys)

adboio force-pushed the 12-18-fix_surveys_only_auto-submit_on_pageload_for_questoins_with_auto-submit_enabled_hosted_surveys_ branch from 4608ca7 to 06fc516 Compare December 18, 2025 19:52

vercel bot had a problem deploying to Preview – posthog-js December 18, 2025 19:58 Failure

vercel bot deployed to Preview – posthog-nextjs-config December 18, 2025 19:58 View deployment

adboio marked this pull request as ready for review December 18, 2025 20:34

lucasheriques approved these changes Dec 18, 2025

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adboio merged commit 96f42be into main Dec 18, 2025
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adboio deleted the 12-18-fix_surveys_only_auto-submit_on_pageload_for_questoins_with_auto-submit_enabled_hosted_surveys_ branch December 18, 2025 21:01

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fix(surveys): only auto-submit on pageload for questoins with auto-submit enabled (hosted surveys) #2790

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fix(surveys): only auto-submit on pageload for questoins with auto-submit enabled (hosted surveys) #2790

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