{"record":{"id":"b3d6f78241aa8c8e","repo":"derailed/k9s","slug":"no-describer-for-q","errorCode":null,"errorMessage":"no describer for %q","messagePattern":"no describer for %q","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/model/describe.go","lineNumber":182,"sourceCode":"\tlines := strings.Split(s, \"\\n\")\n\tif reflect.DeepEqual(lines, d.lines) {\n\t\treturn nil\n\t}\n\td.lines = lines\n\td.fireResourceChanged(d.lines, d.filter(d.query, d.lines))\n\n\treturn nil\n}\n\n// Describe describes a given resource.\nfunc (d *Describe) describe(ctx context.Context, gvr *client.GVR, path string) (string, error) {\n\tmeta, err := getMeta(ctx, gvr)\n\tif err != nil {\n\t\treturn \"\", err\n\t}\n\tdesc, ok := meta.DAO.(dao.Describer)\n\tif !ok {\n\t\treturn \"\", fmt.Errorf(\"no describer for %q\", meta.DAO.GVR())\n\t}\n\tif desc, ok := meta.DAO.(*dao.Secret); ok {\n\t\tdesc.SetDecodeData(d.decode)\n\t}\n\n\treturn desc.Describe(path)\n}\n\n// AddListener adds a new model listener.\nfunc (d *Describe) AddListener(l ResourceViewerListener) {\n\td.listeners = append(d.listeners, l)\n}\n\n// RemoveListener delete a listener from the list.\nfunc (d *Describe) RemoveListener(l ResourceViewerListener) {\n\tvictim := -1\n\tfor i, lis := range d.listeners {\n\t\tif lis == l {","sourceCodeStart":164,"sourceCodeEnd":200,"githubUrl":"https://github.com/derailed/k9s/blob/2d3ccc6ba2ce98c3781bfc441bb3e884f072774f/internal/model/describe.go#L164-L200","documentation":"Describe.describe resolves the DAO accessor for a GVR and requires it to implement the dao.Describer interface (Describe/ToYAML). When the registered DAO does not, describe requests cannot be served and this error names the GVR.","triggerScenarios":"Describing a resource whose DAO accessor is a bare type without Describe/ToYAML methods — typically custom resources routed to a generic accessor that was constructed without describer support, or a plugin/custom DAO registration that forgot the methods.","commonSituations":"Adding custom resources to k9s views; a custom DAO that embeds dao.Resource but overrides enough to lose the interface; referencing resources an extension API server serves without standard describe semantics.","solutions":["Check which accessor is registered for the GVR in the DAO factory (metals/accessors registry)","Make the custom DAO implement dao.Describer: add Describe(path string) (string, error) (and ToYAML) — usually by embedding dao.Resource","For plain CRDs, rely on the generic accessor which provides describers via kubectl describe semantics","As a workaround, describe via kubectl describe <resource> <name>"],"exampleFix":"// before: custom DAO without describer\ntype MyCRD struct {\n  dao.NonResource\n}\n\n// after: embed Resource to gain Describer\ntype MyCRD struct {\n  dao.Resource\n}","handlingStrategy":"type-guard","validationCode":null,"typeGuard":"func describerFor(factory dao.Factory, gvr *client.GVR) (dao.Describer, bool) {\n    accessor, err := dao.AccessorFor(factory, gvr)\n    if err != nil { return nil, false }\n    d, ok := accessor.(dao.Describer)\n    return d, ok\n}","tryCatchPattern":"desc, err := d.describe(ctx, gvr, path)\nif err != nil && strings.Contains(err.Error(), \"no describer for\") {\n    return \"\", fmt.Errorf(\"%w — resource type has no describe support; use 'kubectl describe' instead\", err)\n}","preventionTips":["Check the interface assertion before showing the describe action in UIs","When registering custom DAOs, embed dao.Resource so Describer comes for free","Unit-test that every GVR you expose satisfies the interfaces your views require"],"tags":["kubernetes","dao","describer","interface","k9s"],"backgroundTag":null,"analyzedSha":"2d3ccc6ba2ce98c3781bfc441bb3e884f072774f","analyzedAt":"2026-08-15T16:09:14.432Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}