[UI] Default locale by SchrodingersGat · Pull Request #11412 · inventree/InvenTree

SchrodingersGat · 2026-02-23T12:57:59Z

As part of the investigation for #11408 I discovered that the server default locale is not honored in the user interface.

This PR adds the following:

Ensure that the UI language initially defaults to the server "default locale" setting
Add a user profile option to select "default language"

netlify · 2026-02-23T12:58:05Z

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Copilot

Pull request overview

This PR aims to ensure the frontend language defaults to the server’s configured default_locale when the user has not explicitly chosen a language, and adds a “Default Language” option in the user profile language selector.

Changes:

Allow language to be null in local state to represent “use default language”.
Add locale-priority logic and more defensive locale activation/loading.
Add “Default Language” option to the language dropdown and document language support.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
src/frontend/src/states/LocalState.tsx	Changes language state to `string \| null` with `null` as the default.
src/frontend/src/contexts/ThemeContext.tsx	Wraps Mantine theme creation in a try/catch and falls back to default theme on errors.
src/frontend/src/contexts/LanguageContext.tsx	Introduces locale prioritization and updates locale activation logic.
src/frontend/src/components/items/LanguageSelect.tsx	Adds a “Default Language” option to the language selector UI.
docs/docs/concepts/user_interface.md	Adds language support documentation section.

Comments suppressed due to low confidence (1)

src/frontend/src/contexts/LanguageContext.tsx:106

This effect computes lang as language || defaultLocale and only re-runs when language changes. As a result, when server info loads later, the server default_locale is not used as the initial UI locale (and the Accept-Language header logic below will not re-run to include the server locale). Compute lang using the documented priority (user language -> server.default_locale -> defaultLocale) and include server.default_locale in the dependency list so changes are honored.

    let lang: string = language || defaultLocale;

    // Ensure that the selected language is supported
    if (!Object.keys(getSupportedLanguages()).includes(lang)) {
      lang = defaultLocale;
    }

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Copilot · 2026-02-23T13:03:52Z

src/frontend/src/components/items/LanguageSelect.tsx

  return (
    <Select
      w={width}
-      data={langOptions}
+      data={[
+        {
+          value: '',
+          label: t`Default Language`
+        },
+        ...langOptions
+      ]}
      value={value}
+      defaultValue={''}
      onChange={setValue}


The select is controlled via value={value}, but when the stored locale is null you call setValue(locale) which leaves the control with null (no option selected). That means the new "Default Language" option (value '') is never shown as selected, and defaultValue has no effect in controlled mode. Consider controlling the select with value={locale ?? ''} and converting '' -> null in onChange so the UI reflects the default-language state.

src/frontend/src/contexts/LanguageContext.tsx

Copilot · 2026-02-23T13:03:53Z

src/frontend/src/contexts/LanguageContext.tsx

+    }
+
+    if (locale != activeLocale) {
+      console.info('Changing locale from', activeLocale, 'to', locale);


This adds a new console.info log on every locale change. There are no other console.info calls in the frontend, so this will create noisy production logs. Consider removing it or gating it behind a debug flag.

Suggested change

console.info('Changing locale from', activeLocale, 'to', locale);

docs/docs/concepts/user_interface.md

matmair

LGTM

src/frontend/src/contexts/LanguageContext.tsx

codecov · 2026-02-24T05:08:46Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.99%. Comparing base (edc639d) to head (e9a3563).
⚠️ Report is 5 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #11412      +/-   ##
==========================================
- Coverage   87.99%   87.99%   -0.01%     
==========================================
  Files        1295     1295              
  Lines       58806    58801       -5     
  Branches     1939     1939              
==========================================
- Hits        51745    51740       -5     
  Misses       6579     6579              
  Partials      482      482

Components	Coverage Δ
Backend Apps	`91.69% <ø> (ø)`
Backend General	`93.37% <ø> (ø)`
Frontend	`70.83% <ø> (-0.02%)`	⬇️

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* [UI] Support default server language * Handle faulty theme * Add option for default language * Improve language selection * Brief docs entry * Fix typo * Fix yarn build * Remove debug msg * Fix calendar locale

* add "updated_at" field to PurchaseOrder model * change to use abstract po instead * add api filters * add show, order and filter by po updated_at date to frontend * add tests and increment api_version * change updated_at to null by default * never trust github conflict resolution * bump docker image to python 3.14 (#11414) * chore(deps): bump the dependencies group across 1 directory with 4 updates (#11416) Bumps the dependencies group with 4 updates in the / directory: [depot/setup-action](https://github.com/depot/setup-action), [depot/build-push-action](https://github.com/depot/build-push-action), [anchore/sbom-action](https://github.com/anchore/sbom-action) and [actions/stale](https://github.com/actions/stale). Updates `depot/setup-action` from 1.6.0 to 1.7.1 - [Release notes](https://github.com/depot/setup-action/releases) - [Commits](depot/setup-action@b0b1ea4...15c09a5) Updates `depot/build-push-action` from 1.16.2 to 1.17.0 - [Release notes](https://github.com/depot/build-push-action/releases) - [Commits](depot/build-push-action@9785b13...5f3b3c2) Updates `anchore/sbom-action` from 0.21.1 to 0.22.2 - [Release notes](https://github.com/anchore/sbom-action/releases) - [Changelog](https://github.com/anchore/sbom-action/blob/main/RELEASE.md) - [Commits](anchore/sbom-action@0b82b0b...28d7154) Updates `actions/stale` from 10.1.1 to 10.2.0 - [Release notes](https://github.com/actions/stale/releases) - [Changelog](https://github.com/actions/stale/blob/main/CHANGELOG.md) - [Commits](actions/stale@9971854...b5d41d4) --- updated-dependencies: - dependency-name: depot/setup-action dependency-version: 1.7.1 dependency-type: direct:production update-type: version-update:semver-minor dependency-group: dependencies - dependency-name: depot/build-push-action dependency-version: 1.17.0 dependency-type: direct:production update-type: version-update:semver-minor dependency-group: dependencies - dependency-name: anchore/sbom-action dependency-version: 0.22.2 dependency-type: direct:production update-type: version-update:semver-minor dependency-group: dependencies - dependency-name: actions/stale dependency-version: 10.2.0 dependency-type: direct:production update-type: version-update:semver-minor dependency-group: dependencies ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> * [UI] Copy cells expansion (#11410) * Prevent copy button if copy value is null * Add "link" columns to order tables * Support copy for default column types * Tweak padding to avoid flickering issues * Refactor IPNColumn * Adjust visual styling * Copy for SKU and MPN columns * Add more copy columns * More tweaks * Tweak playwright testing * Further cleanup * More copy cols * Fix auto pricing overwriting manual purchase price #10846 (#11411) * Fix auto pricing overwriting manual purchase price #10846 * Added entry to api_version.py --------- Co-authored-by: Oliver <oliver.henry.walters@gmail.com> * [UI] Default locale (#11412) * [UI] Support default server language * Handle faulty theme * Add option for default language * Improve language selection * Brief docs entry * Fix typo * Fix yarn build * Remove debug msg * Fix calendar locale * feat(backend): ensure restore of backups only works in correct enviroments (#11372) * [FR] ensure restore of backups only works in correct enviroments Fixes #11214 * update PR nbr * fix wrong ty detection * fix link * ensure tracing does not enagage while running backup ops * fix import * remove debugging string * add error codes * add tests for backup and restore * complete test for restore * we do not need e2e on every matrix entry there is no realy db dep here * fix changelog format * add flag to allow bypass * update CHANGELOG.md --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: Oliver <oliver.henry.walters@gmail.com> Co-authored-by: Matthias Mair <code@mjmair.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: JustusRijke <53965859+JustusRijke@users.noreply.github.com>

SchrodingersGat added 5 commits February 23, 2026 12:36

[UI] Support default server language

e3fbafb

Handle faulty theme

e06c2d7

Add option for default language

5b35ebd

Improve language selection

6673fde

Brief docs entry

1806876

SchrodingersGat requested review from Copilot and matmair February 23, 2026 12:58

SchrodingersGat added bug Identifies a bug which needs to be addressed translation User Interface Related to the frontend / User Interface labels Feb 23, 2026

SchrodingersGat added this to the 1.3.0 milestone Feb 23, 2026

Copilot started reviewing on behalf of SchrodingersGat February 23, 2026 12:58 View session

Copilot AI reviewed Feb 23, 2026

View reviewed changes

SchrodingersGat added 2 commits February 23, 2026 13:14

Fix typo

bd5794b

Fix yarn build

fb76686

matmair approved these changes Feb 23, 2026

View reviewed changes

src/frontend/src/contexts/LanguageContext.tsx Outdated Show resolved Hide resolved

SchrodingersGat added 2 commits February 24, 2026 00:44

Remove debug msg

768084b

Fix calendar locale

e9a3563

SchrodingersGat merged commit 8a4ad4f into inventree:master Feb 24, 2026
42 of 43 checks passed

SchrodingersGat deleted the default-locale branch February 24, 2026 05:08

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[UI] Default locale#11412

[UI] Default locale#11412
SchrodingersGat merged 9 commits intoinventree:masterfrom
SchrodingersGat:default-locale

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