[Pushkal-Gupta]

Seven labels in the UI show a translation key instead of a sentence.

Set a pool name longer than 256 characters and the validation error reads:

pools.form.rules.nameMaxLength

It should read "Name can contain a maximum of 256 characters". That string already exists, and is already translated into all 21 languages. The form just asks for it by the wrong name.

What a user sees today

Each of these keys is missing from the en bundles, so i18next renders the key itself:

Where	Key asked for	What is shown
Pool form validation	admin:pools.form.rules.nameMaxLength	pools.form.rules.nameMaxLength
Config form error	common:error.unknown	error.unknown
Connection form error	common:error.unknown	error.unknown
Dag code page	dag:dagDetails.bundleVersion	dagDetails.bundleVersion
XCom column header	dashboard:timestamp	timestamp
Table sort button	components:sort	sort
Dag schedule	dags:schedule.asset	schedule.asset

Those are real outputs, read off an i18next instance built from the en bundles.

Three different causes

Two ask for a string that exists under another name. pools.form.nameMaxLength and common:error.defaultMessage are both present and translated in all 21 locales, so correcting the call restores the text in every language at once.

In PoolForm.tsx the line above already gets it right:

required: translate("pools.form.nameRequired"),
validate: (_value) => _value.length <= 256 || translate("pools.form.rules.nameMaxLength"),

The extra rules. reads like it came from the rules: {} object the call sits in. No locale has ever defined pools.form.rules, and common:error has defaultMessage but never had unknown.

Three were never written. dagDetails.bundleVersion, xcom.columns.timestamp and components:sort do not exist in any locale, so this adds them to en and leaves the other languages to translators, as usual. The XCom header was also reaching into the dashboard namespace for a column title; it now sits with the dag, key and value headers it belongs to.

One is a comparison that can never be true. Schedule.tsx chose between two views with:

timetableSummary === translate("schedule.asset")

timetableSummary comes from the server as AssetTriggeredTimetable.summary, which is the fixed literal "Asset". Comparing it to a translated string is wrong even with the key in place, because a translator localising that word would break the check in their language. With the key missing it compares against "schedule.asset" and never matches. It now compares against the literal, with a comment recording where the value comes from.

This one has stayed hidden because the || before it means the asset view still appeared whenever asset_expression was set.

The test

locales.test.ts gains one check: walk every .ts and .tsx file under src/, collect the namespaces each file loads and every literal key it passes to translate(...), and assert i18next can resolve them. It fails without this change and names all seven. Keys built by interpolation are skipped, as they only exist at run time.

It asks i18next rather than reimplementing the lookup, which turned out to matter. My first attempt reported 52 failures, nearly all wrong, because a hand-rolled check misses three things the real resolver handles:

• plural-only keys, stored as foo_one and foo_other with no plain foo
• flat keys that contain dots, like "limitedList.allItems" in components.json
• a file listing several namespaces, all of which i18next searches, not just the first

exists(key, { count: 1 }) gets all three right. The counter-placeholder tests already in this file build an instance the same way.

Nothing checked this before. locales.test.ts only verified counter formatting, which is why seven keys could drift.

Checks

• 1961 UI tests pass, 239 files
• eslint and tsc clean
• the new check reports 0 missing of 1256 keys after the change, 7 before

---

Was generative AI tooling used to co-author this PR?

• Yes - Claude Code (Opus 5)

[github-actions]

Backport successfully created: v3-4-test

Note: As of Merging PRs targeted for Airflow 3.X
the committer who merges the PR is responsible for backporting the PRs that are bug fixes (generally speaking) to the maintenance branches.

In matter of doubt please ask in #release-management Slack channel.

Status	Branch	Result
✅	v3-4-test