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fix(ai): serialize ai_messages content before insert on Postgres #592

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fix(ai): serialize ai_messages content before insert on Postgres #592

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7 changes: 4 additions & 3 deletions server/ai/conversations/store.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -432,8 +432,9 @@ export async function appendMessage(
const cacheReadTokens = input.cacheReadTokens ?? 0
const cacheCreationTokens = input.cacheCreationTokens ?? 0

// Pass content as a plain array; the DB boundary handles JSON
// encoding/decoding for `_json` columns.
// Serialize content explicitly: on Postgres `content_json` is `text`, and
// Bun binds a plain array to a text parameter via String(), storing
// '[object Object]'. Reads JSON.parse `_json` strings on both dialects.
const { rows: msgRows } = await tx<MessageRow>`
insert into ai_messages (
id, conversation_id, position, role, content_json,
Expand All @@ -442,7 +443,7 @@ export async function appendMessage(
cache_read_tokens, cache_creation_tokens
)
values (
${id}, ${conversationId}, ${position}, ${input.role}, ${input.content},
${id}, ${conversationId}, ${position}, ${input.role}, ${JSON.stringify(input.content)},
${input.toolCallId ?? null}, ${input.toolName ?? null},
${promptTokens}, ${completionTokens}, ${costUsd},
${cacheReadTokens}, ${cacheCreationTokens}
Expand Down