{"record":{"id":"35c28e8ad440ea96","repo":"siyuan-note/siyuan","slug":"item-not-found","errorCode":null,"errorMessage":"item not found","messagePattern":"item not found","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"kernel/av/av.go","lineNumber":1298,"sourceCode":"\t\tif err := os.MkdirAll(av, 0755); err != nil {\n\t\t\tlogging.LogErrorf(\"create attribute view dir failed: %s\", err)\n\t\t\treturn\n\t\t}\n\t}\n\treturn\n}\n\nfunc GetAttributeViewI18n(key string) string {\n\treturn util.AttrViewLangs[util.Lang][key].(string)\n}\n\nvar (\n\tErrAttributeViewNotFound  = errors.New(\"attribute view not found\")\n\tErrInvalidAttributeViewID = errors.New(\"invalid attribute view id\")\n\tErrInvalidBoxID           = errors.New(\"invalid box id\")\n\tErrViewNotFound           = errors.New(\"view not found\")\n\tErrKeyNotFound            = errors.New(\"key not found\")\n\tErrItemNotFound           = errors.New(\"item not found\")\n\tErrWrongLayoutType        = errors.New(\"wrong layout type\")\n\tErrInvalidColumnAlign     = errors.New(\"invalid column align\")\n\tErrSpecTooNew             = errors.New(\"attribute view spec is too new\")\n\tErrFilterTooDeep          = errors.New(\"filter nesting depth exceeds the maximum allowed\")\n)\n\nconst (\n\tNodeAttrNameAvs        = \"custom-avs\"                 // 用于标记块所属的属性视图，逗号分隔 av id\n\tNodeAttrView           = \"custom-sy-av-view\"          // 用于标记块所属的属性视图视图 view id Database block support specified view https://github.com/siyuan-note/siyuan/issues/10443\n\tNodeAttrVisibleViewIDs = \"custom-sy-av-visible-views\" // 用于标记数据库块显示的视图 ID，逗号分隔\n\tNodeAttrViewStaticText = \"custom-sy-av-s-text\"        // 用于标记块所属的属性视图静态文本 Database-bound block primary key supports setting static anchor text https://github.com/siyuan-note/siyuan/issues/10049\n\n\tNodeAttrViewNames = \"av-names\" // 用于临时标记块所属的属性视图名称，空格分隔\n)\n","sourceCodeStart":1280,"sourceCodeEnd":1313,"githubUrl":"https://github.com/siyuan-note/siyuan/blob/251596fc0de2f9528c00c224252fd073a99973f4/kernel/av/av.go#L1280-L1313","documentation":"Sentinel ErrItemNotFound. Returned when a row/item id is not found among the AV's values (model/attribute_view.go:7687 and tested at attribute_view_value_identity_test.go:125). The targeted database row was deleted or does not exist in this AV.","triggerScenarios":"Calling an operation that updates, deletes, or moves a specific row by itemID when that row id is no longer present — e.g. updating a value for a row deleted in another session, or operating on a row id from a different AV.","commonSituations":"Stale client state after row deletion elsewhere; plugin reusing a row id after the row was removed; race between a delete-row and an in-flight update-row on the same item.","solutions":["Reload the AV rows and operate only on current item ids.","Make update operations idempotent: if the item is gone, treat the update as a no-op rather than an error.","Serialize row deletes and updates per AV to avoid the race."],"exampleFix":"// before\nop := &av.Operation{Action: \"update\", id: rowID, data: v}\nerr := model.UpdateAttributeView(op)   // row deleted elsewhere -> item not found\n\n// after: tolerate a vanished row\nif errors.Is(err, av.ErrItemNotFound) {\n    // refresh and skip, or re-create the row as needed\n    return nil\n}","handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"err := model.UpdateAttributeView(op)\nif errors.Is(err, av.ErrItemNotFound) {\n    // row vanished concurrently; treat as no-op\n    return nil\n}","preventionTips":["Reload AV rows before operating on specific item ids.","Make update operations idempotent against vanished rows.","Serialize row deletes and updates per AV."],"tags":["attribute-view","item","row","not-found","api"],"backgroundTag":null,"analyzedSha":"251596fc0de2f9528c00c224252fd073a99973f4","analyzedAt":"2026-08-12T21:18:37.123Z","schemaVersion":2},"datasetVersion":"2026-08-12T23:17:12.415Z"}