{"record":{"id":"9742f7ece9b9480f","repo":"flipped-aurora/gin-vue-admin","slug":"d-list-all-menus","errorCode":null,"errorMessage":"菜单 %d 不存在,可先用 list_all_menus 查询全部菜单","messagePattern":"菜单 (.+?) 不存在,可先用 list_all_menus 查询全部菜单","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"server/mcp/role_menu_assigner.go","lineNumber":83,"sourceCode":"\t}\n\tif err := requireNonEmptyList(menuIDs, \"menuIds\"); err != nil {\n\t\treturn nil, err\n\t}\n\tif len(menuIDs) > orgBatchLimit {\n\t\treturn nil, fmt.Errorf(\"单次授权菜单数量不能超过 %d 个\", orgBatchLimit)\n\t}\n\n\t// 全量基础菜单:存在性校验、父链补齐、写回时的完整菜单对象都从这里取\n\tallResp, err := postUpstream[[]system.SysBaseMenu](ctx, \"/menu/getMenuList\", map[string]any{})\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"获取菜单列表失败: %w\", err)\n\t}\n\tmenuIndex := make(map[uint]system.SysBaseMenu)\n\tflattenBaseMenus(allResp.Data, menuIndex)\n\n\tfor _, id := range menuIDs {\n\t\tif _, ok := menuIndex[id]; !ok {\n\t\t\treturn nil, fmt.Errorf(\"菜单 %d 不存在,可先用 list_all_menus 查询全部菜单\", id)\n\t\t}\n\t}\n\n\t// 角色当前授权(先读,防覆盖丢权)\n\tcurrentResp, err := postUpstream[map[string][]system.SysMenu](ctx, \"/menu/getMenuAuthority\", map[string]any{\n\t\t\"authorityId\": authorityID,\n\t})\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"获取角色当前菜单授权失败: %w\", err)\n\t}\n\tcurrentIDs := make([]uint, 0)\n\tfor _, menu := range currentResp.Data[\"menus\"] {\n\t\tid := menu.MenuId\n\t\tif id == 0 {\n\t\t\tid = menu.ID\n\t\t}\n\t\tif id != 0 && !containsUint(currentIDs, id) {\n\t\t\tcurrentIDs = append(currentIDs, id)","sourceCodeStart":65,"sourceCodeEnd":101,"githubUrl":"https://github.com/flipped-aurora/gin-vue-admin/blob/3136500ef380842b0eb6c4daa87c3f8a47fcf9e0/server/mcp/role_menu_assigner.go#L65-L101","documentation":"Each requested menu ID must exist in the flattened index of the server's menu list. An unknown ID is rejected with a hint to use the list_all_menus tool to discover valid IDs. This prevents writing menu-authority rows for menus that do not exist.","triggerScenarios":"Calling the assign-menus tool with a menuIds entry absent from the server's menu tree: typo, ID from another environment, soft-deleted menu, or an ID belonging to a plugin not installed.","commonSituations":"Hardcoded menu IDs drifting across environments after re-seeding menus; menu removed in a newer gva version; plugin menus missing because the plugin wasn't installed.","solutions":["Call the list_all_menus MCP tool to get the current valid menu IDs and correct the list","Remove or replace the stale ID in menuIds","Install/enable the missing plugin if the menu belongs to a plugin","Re-seed or restore the menu if it was accidentally deleted server-side"],"exampleFix":"// before\nmenuIds := []uint{1, 2, 333} // 333 doesn't exist\n// after\n// verify via list_all_menus first\nmenuIds := []uint{1, 2, 18}","handlingStrategy":"validation","validationCode":"// fetch valid menu IDs via list_all_menus first\nall, err := listAllMenus(ctx)\nif err != nil {\n    return err\n}\nvalid := make(map[uint]struct{}, len(all))\nfor _, m := range all {\n    valid[m.ID] = struct{}{}\n}\nfor _, id := range menuIDs {\n    if _, ok := valid[id]; !ok {\n        return fmt.Errorf(\"menu %d not found\", id)\n    }\n}","typeGuard":"func allMenusExist(ids []uint, index map[uint]struct{}) bool {\n    for _, id := range ids {\n        if _, ok := index[id]; !ok {\n            return false\n        }\n    }\n    return true\n}","tryCatchPattern":null,"preventionTips":["Discover IDs via list_all_menus rather than hardcoding","Re-sync IDs after re-seeding menus or switching environments","Install required plugins before referencing their menus"],"tags":["mcp","validation","menu"],"backgroundTag":"referenced-entity-not-found","analyzedSha":"3136500ef380842b0eb6c4daa87c3f8a47fcf9e0","analyzedAt":"2026-08-31T13:50:02.721Z","schemaVersion":2},"datasetVersion":"2026-08-31T19:17:28.585Z"}