Add Google Analytics 4 to both sites (env-var driven)#12
Merged
radinhamidi merged 1 commit intochore/site-seofrom Apr 30, 2026
Merged
Add Google Analytics 4 to both sites (env-var driven)#12radinhamidi merged 1 commit intochore/site-seofrom
radinhamidi merged 1 commit intochore/site-seofrom
Conversation
New shared component @qg/shared/components/GoogleAnalytics.astro reads `PUBLIC_GA_MEASUREMENT_ID` at build time. Astro inlines PUBLIC_* env vars into the static output, so each Cloudflare Pages project sets its own ID via "Environment variables": querygym-site → PUBLIC_GA_MEASUREMENT_ID = G-XXXXXXXXXX querygym-leaderboard → PUBLIC_GA_MEASUREMENT_ID = G-YYYYYYYYYY Component renders nothing if the env var is unset — keeps `pnpm dev`, preview branches, and forks silent (no analytics traffic from dev or contributor environments). Wired into both layouts: - web/site/src/layouts/Default.astro - reproducibility/site/src/layouts/Default.astro The inline config script is built as a string and emitted via set:html so Astro doesn't try to parse JS function-body curly braces as JSX expressions. No consent banner. GA4's default IP anonymization applies; add a banner if EU traffic becomes a real concern. Verified locally: with env var set, gtag.js + config render in <head> on both sites; without it, zero googletagmanager references in the output. Stacked on top of #11 (chore/site-seo). Once #11 merges, this PR's diff will narrow to just the GA bits. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This was referenced Apr 30, 2026
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Summary
Adds GA4 (gtag.js) to both `querygym.com` and `leaderboard.querygym.com`. The measurement ID isn't hardcoded — each Cloudflare Pages project sets its own ID via the dashboard's Environment variables pane:
If the env var is unset (local dev, fork PRs, preview branches without prod env), nothing renders — no analytics requests fire. Keeps dev environments silent.
How it works
The inline config script is built as a string and emitted via `set:html` so Astro doesn't try to parse JS function-body curly braces as JSX expressions.
Stacked on #11
This PR is based on `chore/site-seo` (PR #11). Merge order:
After #11 merges this PR's diff will narrow to just the three GA-related files.
Test plan
Privacy notes
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