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On the new "Devices" page, it is now possible to see at a glance where each device is used: which dashboards display it, and which scenes reference it. This makes it easy to know what will break before deleting a device, and to spot devices that are not used anywhere.
Open question raised in the forum topic (device-level vs per-feature usage): this PR implements device-level usage. A device is considered "used" as soon as the device itself or any of its features is referenced by a dashboard or a scene. This keeps the list readable (one short cell per device) and answers the two use cases from the topic — "what will break if I delete this device" and "which devices are used nowhere". Per-feature granularity would fit better in a device detail view and is left out of scope.
Server
New device.getUsage(userId) (server/lib/device/device.getUsage.js). It walks the dashboard boxes JSON and the scene actions / triggers JSON and collects every device, devices, camera, device_feature and device_features selector. The walk is recursive, so nested scene action blocks (if / then / else) are covered too. Collected feature selectors are resolved to their device.
Exposed as a single endpoint GET /api/v1/device/usage, which returns the usage of every device in one call — the list never does one request per device. The response is an object indexed by device selector; a device missing from the response is used nowhere:
Dashboards are scoped exactly like dashboard.get: a user sees his own dashboards and the public ones. Scenes are global, as everywhere else.
Front
New "Used in" column on the Devices page, listing the dashboards and the scenes as links (to /dashboard/:selector and /dashboard/scene/:selector), or "Nowhere" when the device is unused. Above 3 entries the rest is collapsed into a +N counter.
New filter next to the room and integration filters: all devices / used in a dashboard or a scene / used nowhere.
The usage is also shown on the mobile list (as plain tags, since the whole mobile row is already a link).
New translation keys added to en, fr and de.
Tests
server/test/lib/device/device.getUsage.test.js: no usage, dashboard usage (through a feature, through a direct device selector and through a camera selector), scene usage in actions (including nested if/then/else) and in triggers, merge of dashboards and scenes for the same device, and the dashboard visibility rule (another user's private dashboard is hidden, his public one is returned).
server/test/controllers/device/device.controller.test.js: a test for the new GET /api/v1/device/usage route.
This pull request was produced by an automated run.
Add a device usage lookup so that, from the Devices page, one can see at a
glance which dashboards and which scenes reference a device. This helps to
know what will break before deleting a device, and to spot devices that are
not used anywhere.
Server:
- new `device.getUsage(userId)` which walks the dashboard boxes and the
scene actions/triggers JSON (recursively, so nested if/then/else action
blocks are covered) and resolves every `device`, `devices`, `camera`,
`device_feature` and `device_features` selector to a device
- usage is device-level: a device is "used" as soon as the device itself or
any of its features is referenced
- dashboards are scoped like `dashboard.get`: the user sees his own
dashboards and the public ones
- exposed as a single `GET /api/v1/device/usage` endpoint returning the
usage of every device at once, so the list does not do one request per
device
Front:
- new "Used in" column on the Devices page listing the dashboards and the
scenes as links, and "Nowhere" when the device is unused
- new filter to only display the devices used somewhere, or the ones used
nowhere
- the usage is also displayed on the mobile list
Tests: new `device.getUsage` unit tests and a controller test.
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front/src/routes/devices/DevicesPage.jsx
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front/src/routes/devices/DevicesPage.jsx
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📝 Walkthrough
Walkthrough
The change adds device usage discovery for dashboards and scenes, exposes it through an authenticated API, and adds usage loading, filtering, display, translations, styling, demo data, and tests to the devices page.
Changes
Device usage discovery and API
Layer / File(s)
Summary
Usage contract and aggregation server/lib/device/device.selectorFields.js, server/lib/device/device.getUsage.js, server/lib/device/device.migrate.js, server/test/lib/device/device.getUsage.test.js, docs/specs/device-migration.md
Shared selector fields support migration and usage lookup. Device.getUsage resolves nested dashboard and scene selectors to known devices and aggregates usage entries.
Authenticated usage API server/lib/device/index.js, server/api/controllers/device.controller.js, server/api/routes.js, server/test/controllers/device/device.controller.test.js
Adds DeviceManager.getUsage and the authenticated GET /api/v1/device/usage endpoint. Integration coverage verifies scene usage.
This change adds device usage visibility and filtering across dashboards and scenes; no actionable merge-blocking risk remains based on the current evidence, so it is merge-ready after normal checks and review.
Sequence Diagram(s)
sequenceDiagram
participant DevicesPage
participant Devices
participant DeviceUsageAPI
participant DeviceManager
participant device.getUsage
DevicesPage->>Devices: load devices and usage
Devices->>DeviceUsageAPI: GET /api/v1/device/usage
DeviceUsageAPI->>DeviceManager: getUsage(userId)
DeviceManager->>device.getUsage: aggregate dashboard and scene references
device.getUsage-->>DeviceManager: per-device usage map
DeviceManager-->>DeviceUsageAPI: JSON usage response
DeviceUsageAPI-->>Devices: usage data
Devices-->>DevicesPage: filtered devices with usage
GladysAssistant/Gladys#2868: Both changes modify the devices-page components and usage-related rendering flow.
Suggested labels:needs:human-review
Suggested reviewers:atrovato
Poem
I hop through dashboards, quick as a hare,
Find scenes and selectors hiding there.
Three little links, then tags in a row,
Used or unused, the filters now show.
Usage arrives with a bright carrot glow.
✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.51%. Comparing base (a40d19f) to head (ddd3088). ⚠️ Report is 7 commits behind head on master.
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Stale comment
The server-side walk is in good shape: one GET /api/v1/device/usage for the whole list, the same dashboard visibility rule as dashboard.get, recursive collection of device / devices / camera / device_feature / device_features (including nested if/then/else and while), and tests that cover feature vs device vs camera, nested scenes, merge, and private/public dashboards. Route order is correct (/usage is registered before /:device_selector). No new device categories/types. CI is green, including patch coverage.
The frontend currently treats “usage not loaded yet” and “usage request failed” the same as “used nowhere”, which undercuts both use cases this PR is built for. That should be fixed before merge.
Notrisk:high (read-only additive endpoint + list UI). Notneeds:human-review (device-level usage is a reasonable call for this list; the forum’s per-feature question is documented as out of scope).
Blocking
Unloaded / failed usage is shown as “Nowhere”.usage starts as {}, getDevices can finish first, and getUsage errors are only console.error’d. Every device then renders “Nowhere”, and the “used nowhere” filter matches the whole list. Keep the list dimmed until usage has loaded, or pass a distinct “unknown” state into DeviceUsage / matchUsageFilter until the request succeeds; on failure, surface an error instead of implying nothing is referenced.
Residuals (non-blocking)
Demo mode:front/src/config/demo.js has no get /api/v1/device/usage stub. DemoHttpClient throws, the catch swallows it, and the public demo would list every device as unused.
Room-scoped widgets:temperature-in-room and humidity-in-room store a room, not a device selector, so a sensor used only that way still looks unused. Acceptable for a selector walk; worth a short note in the empty-state copy later if users hit it.
Selector-key contract: the key lists duplicate device.migrate.js / docs/specs/device-migration.md B.3. A new Joi field would need both call sites updated.
No Cypress coverage of the new column or filter (same gap as the original Devices page).
Scene icon is returned by the API but the tags always use play-circle.
The devices page treated a device missing from the usage response as "used
nowhere", which was also true before the usage request answered and when it
failed (in demo mode it always failed: the route was missing from demo.js).
Track whether the usage is loaded, render a placeholder until then, skip the
usage filter while it is unknown, and show an alert when the call fails.
The list of fields carrying device and feature selectors moves to
device.selectorFields.js, shared by device.migrate and device.getUsage, so
the rewrite and the lookup cannot drift apart.
Autofix-Pass: 1
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Actionable comments posted: 1
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Inline comments:
In `@front/src/routes/devices/DevicesPage.jsx`:
- Around line 52-62: Update the usage-filter select in the DevicesPage component
to be disabled whenever props.usageLoaded is false, while preserving its
existing change handler and selection behavior once usage data is available.
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Stale comment
The follow-up at b314a29 addresses the previous request for changes. Unloaded/failed usage is no longer shown as “Nowhere” (usageLoaded / usageError, placeholder cells, dedicated alert, demo stub), and the selector-key lists are shared with migrate via device.selectorFields.js.
The server walk is still in good shape: one GET /api/v1/device/usage for the whole list, the same dashboard visibility rule as dashboard.get, recursive collection of device / devices / camera / device_feature / device_features, and tests for feature vs device vs camera, nested scenes, merge, and private/public dashboards. Route order is correct. No new device categories/types. CI is green, including patch coverage.
Notrisk:high (read-only additive endpoint + list UI). Notneeds:human-review (device-level usage is a reasonable call for this list; the forum’s per-feature question is documented as out of scope).
Residuals (non-blocking)
The usage-filter <select> stays enabled while usageLoaded is false (already noted by CodeRabbit). The filter itself is a no-op until the request succeeds, so this is UX polish, not a wrong “Nowhere” result.
Room-scoped widgets (temperature-in-room, humidity-in-room) store a room, not a device selector, so a sensor used only that way still looks unused.
Scene condition variable can hold a feature selector (only-continue-if / if-then-else) but is not in the shared key lists — same contract as migrate. The usual get-value + condition path is still found via device_feature.
No Cypress coverage of the new column or filter.
Scene icon is returned by the API but the tags always use play-circle.
The usage filter was selectable before the usage request answered, while
matchUsageFilter deliberately ignores it in that window: picking "used" or
"used nowhere" then changed nothing. Disable the select until the usage is
known.
Autofix-Pass: 2
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Stale comment
Re-review at ddd3088. The follow-up correctly disables the usage filter until usageLoaded is true, so a selected "used" / "used nowhere" value can no longer sit inert while every device still matches. Previous findings stay addressed: unknown vs unused (usageLoaded / usageError / placeholder / demo stub), shared device.selectorFields.js, one list-wide GET /api/v1/device/usage, dashboard visibility matching dashboard.get, recursive selector walk, and route order before /:device_selector. CI is green, including patch coverage. No new device categories/types.
Notrisk:high (read-only additive endpoint + list UI). Notneeds:human-review.
Blocking: mobile list
Pierre-Gilles already flagged this with a screenshot: the usage tags on the mobile row are unlabeled, wrap under the feature icons, and are not links (the whole item already goes to the integration). That makes them look like extra room/integration chips rather than “where this device is used”. Please drop DeviceUsage from DeviceMobileItem for this PR. Keep the desktop “Used in” column and the usage filter (the filter still answers “which devices are used nowhere” on a phone).
Showing usage on “the page of the device” is a larger follow-up: those pages are per-integration (deviceUrl), not a shared device detail view.
Performance (10 dashboards / 200 scenes)
This should stay cheap. getUsage is three findAlls in parallel (device selectors + features, visible dashboards with boxes, all scenes with actions/triggers) and then an in-memory walk of that JSON. No per-device queries. That is the same order of work as device.migrate, on a page visit rather than on a write. For a typical home (low hundreds of scenes, dashboards in the tens of KB) it should stay well under a second. I would not add caching for this PR.
Residuals (non-blocking)
Room-scoped widgets (temperature-in-room, humidity-in-room) store a room, not a device selector, so a sensor used only that way still looks unused — same contract as migrate.
Scene condition variable is a scope path (0.0.last_value), not a feature selector; the usual get-value + condition path is still found via device_feature.
No Cypress coverage of the new column or filter (same gap as the original Devices page).
Scene icon is returned by the API but the tags always use play-circle.
The whole mobile row is already a link to the integration, so the usage
tags could not navigate and read as extra chips under the feature icons.
The usage stays on the desktop table, and the usage filter keeps working
on mobile. The plain-tag rendering of DeviceUsage existed only for that
row and is dropped with it.
Autofix-Pass: 3
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Re-review at c6ccdd1. The previous blocking item is fixed: DeviceUsage is gone from DeviceMobileItem, so the mobile row is back to stamp + name + room/integration + feature icons, and the usage filter still works on a phone. Unknown vs unused (usageLoaded / usageError / placeholder / demo stub), shared device.selectorFields.js, one list-wide GET /api/v1/device/usage, dashboard visibility matching dashboard.get, recursive selector walk, and route order before /:device_selector all stay in good shape. No new device categories/types.
Notrisk:high (read-only additive endpoint + list UI). Notneeds:human-review.
Blocking: rebase onto current master
GitHub reports this PR as conflicting (mergeable: false, mergeable_state: dirty). The branch is still based on a40d19f. Current master has since rewritten the same Devices-page files (name-as-link instead of "Open in integration", native/community filter groups, disambiguateIntegrationNames, IntegrationName external badge, demo.js fixtures). Merging as-is is impossible, and a sloppy conflict resolution would resurrect the old row actions.
Please rebase and keep master's Devices-page UX, then re-apply the usage column, the usage filter (disabled until usageLoaded), and the nth-of-type(4) page-options tweak.
Residuals (non-blocking)
Room-scoped widgets (temperature-in-room, humidity-in-room) store a room, not a device selector, so a sensor used only that way still looks unused — same contract as migrate.
No Cypress coverage of the new column or filter (same gap as the original Devices page).
Scene icon is returned by the API but the tags always use play-circle.
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GitHub currently reports this PR as conflicting with master (mergeable_state: dirty). Since this branch (a40d19f), the Devices page on master replaced this "Open in integration" column with a name-as-link, and also added native/community integration optgroups, disambiguateIntegrationNames, and an external-integration badge on IntegrationName.
Please rebase onto current master and re-apply only the usage work on top of that layout:
keep the device name as the link to deviceUrl; do not bring this button back (devicesList.openInIntegration is already gone from master)
add the "Used in" cell here, next to the features column
keep the usage filter, but leave the native/community <optgroup>s in place
style.css.pageOptions > select:nth-of-type(4) is the right index once the usage <select> is a third sibling of the order select — do not keep master's :nth-of-type(3) after the rebase
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Implements feature request: https://community.gladysassistant.com/t/dans-la-page-appareils-lister-les-dashboard-et-scene-utilisant-un-appareil/10579
Description
On the new "Devices" page, it is now possible to see at a glance where each device is used: which dashboards display it, and which scenes reference it. This makes it easy to know what will break before deleting a device, and to spot devices that are not used anywhere.
Open question raised in the forum topic (device-level vs per-feature usage): this PR implements device-level usage. A device is considered "used" as soon as the device itself or any of its features is referenced by a dashboard or a scene. This keeps the list readable (one short cell per device) and answers the two use cases from the topic — "what will break if I delete this device" and "which devices are used nowhere". Per-feature granularity would fit better in a device detail view and is left out of scope.
Server
device.getUsage(userId)(server/lib/device/device.getUsage.js). It walks the dashboardboxesJSON and the sceneactions/triggersJSON and collects everydevice,devices,camera,device_featureanddevice_featuresselector. The walk is recursive, so nested scene action blocks (if/then/else) are covered too. Collected feature selectors are resolved to their device.GET /api/v1/device/usage, which returns the usage of every device in one call — the list never does one request per device. The response is an object indexed by device selector; a device missing from the response is used nowhere:{ "test-device": { "dashboards": [{ "id": "...", "name": "Main", "selector": "main", "type": "main" }], "scenes": [{ "id": "...", "name": "Good morning", "selector": "good-morning", "icon": "fe fe-bell" }] } }dashboard.get: a user sees his own dashboards and the public ones. Scenes are global, as everywhere else.Front
/dashboard/:selectorand/dashboard/scene/:selector), or "Nowhere" when the device is unused. Above 3 entries the rest is collapsed into a+Ncounter.en,frandde.Tests
server/test/lib/device/device.getUsage.test.js: no usage, dashboard usage (through a feature, through a direct device selector and through a camera selector), scene usage in actions (including nestedif/then/else) and in triggers, merge of dashboards and scenes for the same device, and the dashboard visibility rule (another user's private dashboard is hidden, his public one is returned).server/test/controllers/device/device.controller.test.js: a test for the newGET /api/v1/device/usageroute.This pull request was produced by an automated run.
Forum
Forum: https://community.gladysassistant.com/t/dans-la-page-appareils-lister-les-dashboard-et-scene-utilisant-un-appareil/10579
Checklist
cd server && npm run coverage(Codecov requires 100% coverage on changed lines) and Cypress (npm run cypress:run) if the UI changednpm run eslint,npm run prettier)Generated by Claude Code
Summary by CodeRabbit
New Features
Bug Fixes