{"record":{"id":"e23ebbe7b4fd5eb2","repo":"Crosstalk-Solutions/project-nomad","slug":"failed-to-delete-chat-session","errorCode":null,"errorMessage":"Failed to delete chat session","messagePattern":"Failed to delete chat session","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"admin/app/services/chat_service.ts","lineNumber":226,"sourceCode":"          error instanceof Error ? error.message : error\n        }`\n      )\n      throw new Error('Failed to add message')\n    }\n  }\n\n  async deleteSession(sessionId: number) {\n    try {\n      const session = await ChatSession.findOrFail(sessionId)\n      await session.delete()\n      return { success: true }\n    } catch (error) {\n      logger.error(\n        `[ChatService] Failed to delete session ${sessionId}: ${\n          error instanceof Error ? error.message : error\n        }`\n      )\n      throw new Error('Failed to delete chat session')\n    }\n  }\n\n  async getMessageCount(sessionId: number): Promise<number> {\n    try {\n      const count = await ChatMessage.query().where('session_id', sessionId).count('* as total')\n      return Number(count[0].$extras.total)\n    } catch (error) {\n      logger.error(\n        `[ChatService] Failed to get message count for session ${sessionId}: ${error instanceof Error ? error.message : error}`\n      )\n      return 0\n    }\n  }\n\n  async generateTitle(sessionId: number, userMessage: string, assistantMessage: string, model: string) {\n    try {\n      let title: string","sourceCodeStart":208,"sourceCodeEnd":244,"githubUrl":"https://github.com/Crosstalk-Solutions/project-nomad/blob/0bd1c6f4f9888d577fe232de06ac144bb8337131/admin/app/services/chat_service.ts#L208-L244","documentation":"ChatService.deleteSession rethrows this after logging when findOrFail(sessionId) fails (already deleted / bad id) or when cascading deletion of the session row fails at the DB level. Because the not-found path and the DB-failure path share one catch, both look identical to the caller.","triggerScenarios":"Deleting a session id that no longer exists (double delete, stale UI), or a DB error during the delete transaction (connection loss, FK restriction preventing removal).","commonSituations":"User double-clicks delete or two tabs delete the same session; a schema where chat_messages has ON DELETE RESTRICT so the session row can't be removed while messages exist.","solutions":["Check logs for '[ChatService] Failed to delete session <id>: <cause>'","If it's a double-delete, make delete idempotent: use ChatSession.query().where('id', sessionId).delete() or treat E_ROW_NOT_FOUND as success","Verify FK constraints on chat_messages use ON DELETE CASCADE (or delete messages first)","Fix DB connectivity if the delete itself is failing"],"exampleFix":"// before\nconst session = await ChatSession.findOrFail(sessionId)\nawait session.delete()\n\n// after\nconst session = await ChatSession.find(sessionId)\nif (!session) return // already deleted — idempotent\nawait session.delete()","handlingStrategy":"validation","validationCode":"if (!(await ChatSession.find(sessionId))) return // idempotent delete — nothing to do","typeGuard":"async function isSessionDeletable(id: number): Promise<boolean> {\n  return (await ChatSession.find(id)) !== null\n}","tryCatchPattern":"try { await chat.deleteSession(id) } catch (e) { if (e.message === 'Failed to delete chat session' && !(await ChatSession.find(id))) return /* already gone */ throw e }","preventionTips":["Make delete buttons idempotent / disable after first click","Use find() + no-op instead of findOrFail for deletes","Ensure FKs use ON DELETE CASCADE","Handle E_ROW_NOT_FOUND separately from DB failures"],"tags":["chat","database","delete","adonisjs","not-found"],"backgroundTag":"record-not-found","analyzedSha":"0bd1c6f4f9888d577fe232de06ac144bb8337131","analyzedAt":"2026-08-27T05:34:15.424Z","schemaVersion":2},"datasetVersion":"2026-08-27T08:17:20.692Z"}