feat: optimize chat list sorting

backend/apps/chat/api/chat.py

@@ -16,7 +16,7 @@ from apps.chat.curd.chat import delete_chat_with_user, get_chart_data_with_user,
     format_json_data, format_json_list_data, get_chart_config, list_recent_questions, rename_chat_with_user, \
     get_chat_log_history, get_chart_data_with_user_live
 from apps.chat.models.chat_model import CreateChat, ChatRecord, RenameChat, ChatQuestion, AxisObj, QuickCommand, \
-    ChatInfo, Chat, ChatFinishStep, ChatQuestionBase, SimpleChat
+    ChatInfo, Chat, ChatFinishStep, ChatQuestionBase, SimpleChat, ChatItem
 from apps.chat.task.llm import LLMService
 from apps.swagger.i18n import PLACEHOLDER_PREFIX
 from apps.system.schemas.permission import SqlbotPermission, require_permissions
@@ -29,7 +29,7 @@ from common.utils.data_format import DataFormat
 router = APIRouter(tags=["Data Q&A"], prefix="/chat")
 
 
-@router.get("/list", response_model=List[Chat], summary=f"{PLACEHOLDER_PREFIX}get_chat_list")
+@router.get("/list", response_model=List[ChatItem], summary=f"{PLACEHOLDER_PREFIX}get_chat_list")
 async def chats(session: SessionDep, current_user: CurrentUser):
     return list_chats(session, current_user)
 

backend/apps/chat/curd/chat.py

@@ -9,7 +9,7 @@ from sqlalchemy import desc, func
 from sqlalchemy.orm import aliased
 
 from apps.chat.models.chat_model import Chat, ChatRecord, CreateChat, ChatInfo, RenameChat, ChatQuestion, ChatLog, \
-    TypeEnum, OperationEnum, ChatRecordResult, ChatLogHistory, ChatLogHistoryItem
+    TypeEnum, OperationEnum, ChatRecordResult, ChatLogHistory, ChatLogHistoryItem, ChatItem
 from apps.datasource.crud.datasource import get_ds
 from apps.datasource.crud.recommended_problem import get_datasource_recommended_chart
 from apps.datasource.models.datasource import CoreDatasource
@@ -41,10 +41,31 @@ def get_chat(session: SessionDep, chat_id: int) -> Chat:
     return chat
 
 
-def list_chats(session: SessionDep, current_user: CurrentUser) -> List[Chat]:
+def list_chats(session: SessionDep, current_user: CurrentUser) -> List[ChatItem]:
     oid = current_user.oid if current_user.oid is not None else 1
-    chart_list = session.query(Chat).filter(and_(Chat.create_by == current_user.id, Chat.oid == oid)).order_by(
-        Chat.create_time.desc()).all()
+    # 子查询：获取每个chat对应的最新chat_record的create_time
+    latest_record_subq = (
+        session.query(
+            ChatRecord.chat_id,
+            func.max(ChatRecord.create_time).label('latest_record_time')
+        )
+        .group_by(ChatRecord.chat_id)
+        .subquery()
+    )
+    # 按最新chat_record的create_time排序，如果没有chat_record则使用chat自身的create_time
+    sort_time = func.coalesce(latest_record_subq.c.latest_record_time, Chat.create_time)
+    results = (
+        session.query(Chat, sort_time.label('latest_record_time'))
+        .outerjoin(latest_record_subq, Chat.id == latest_record_subq.c.chat_id)
+        .filter(and_(Chat.create_by == current_user.id, Chat.oid == oid))
+        .order_by(sort_time.desc())
+        .all()
+    )
+    chart_list = []
+    for chat, latest_record_time in results:
+        item = ChatItem(**chat.model_dump())
+        item.latest_record_time = latest_record_time
+        chart_list.append(item)
     return chart_list
 
 
@@ -476,6 +497,11 @@ def get_chat_with_records(session: SessionDep, chart_id: int, current_user: Curr
 
     chat_info.records = result
 
+    # 从已查出的records中取最新的create_time
+    record_times = [r.get('create_time') for r in result if r.get('create_time') is not None]
+    if record_times:
+        chat_info.latest_record_time = max(record_times)
+
     return chat_info
 
 

backend/apps/chat/models/chat_model.py

@@ -179,6 +179,22 @@ class SimpleChat(BaseModel):
     id: int = None
     brief: str = ''
 
+class ChatItem(BaseModel):
+    id: Optional[int] = None
+    oid: Optional[int] = None
+    create_time: Optional[datetime] = None
+    create_by: Optional[int] = None
+    brief: Optional[str] = None
+    chat_type: Optional[str] = "chat"
+    datasource: Optional[int] = None
+    engine_type: Optional[str] = None
+    origin: Optional[int] = 0
+    brief_generate: Optional[bool] = False
+    recommended_question_answer: Optional[str] = None
+    recommended_question: Optional[str] = None
+    recommended_generate: Optional[bool] = False
+    latest_record_time: Optional[datetime] = None
+
 class ChatInfo(BaseModel):
     id: Optional[int] = None
     create_time: datetime = None
@@ -192,6 +208,7 @@ class ChatInfo(BaseModel):
     datasource_exists: bool = True
     recommended_question: Optional[str] = None
     recommended_generate: Optional[bool] = False
+    latest_record_time: Optional[datetime] = None
     records: List[ChatRecord | dict] = []
 
 

frontend/src/api/chat.ts

@@ -148,6 +148,7 @@ export class ChatRecord {
 export class Chat {
   id?: number
   create_time?: Date | string
+  latest_record_time?: Date | string
   create_by?: number
   brief?: string
   chat_type?: string
@@ -161,6 +162,7 @@ export class Chat {
   constructor(
     id: number,
     create_time: Date | string,
+    latest_record_time: Date | string,
     create_by: number,
     brief: string,
     chat_type: string,
@@ -170,6 +172,7 @@ export class Chat {
   constructor(
     id?: number,
     create_time?: Date | string,
+    latest_record_time?: Date | string,
     create_by?: number,
     brief?: string,
     chat_type?: string,
@@ -178,6 +181,7 @@ export class Chat {
   ) {
     this.id = id
     this.create_time = getDate(create_time)
+    this.latest_record_time = getDate(latest_record_time ?? create_time)
     this.create_by = create_by
     this.brief = brief
     this.chat_type = chat_type
@@ -196,6 +200,7 @@ export class ChatInfo extends Chat {
   constructor(
     id: number,
     create_time: Date | string,
+    latest_record_time: Date | string,
     create_by: number,
     brief: string,
     chat_type: string,
@@ -211,6 +216,7 @@ export class ChatInfo extends Chat {
   constructor(
     param1?: number | Chat,
     create_time?: Date | string,
+    latest_record_time?: Date | string,
     create_by?: number,
     brief?: string,
     chat_type?: string,
@@ -228,6 +234,7 @@ export class ChatInfo extends Chat {
       if (param1 instanceof Chat) {
         this.id = param1.id
         this.create_time = getDate(param1.create_time)
+        this.latest_record_time = getDate(param1.latest_record_time ?? param1.create_time)
         this.create_by = param1.create_by
         this.brief = param1.brief
         this.chat_type = param1.chat_type
@@ -239,6 +246,7 @@ export class ChatInfo extends Chat {
       } else {
         this.id = param1
         this.create_time = getDate(create_time)
+        this.latest_record_time = getDate(latest_record_time ?? create_time)
         this.create_by = create_by
         this.brief = brief
         this.chat_type = chat_type
@@ -408,6 +416,7 @@ export const chatApi = {
     return new ChatInfo(
       data.id,
       data.create_time,
+      data.latest_record_time,
       data.create_by,
       data.brief,
       data.chat_type,

frontend/src/views/chat/ChatList.vue

@@ -3,7 +3,7 @@ import icon_more_outlined from '@/assets/svg/icon_more_outlined.svg'
 import icon_expand_down_filled from '@/assets/embedded/icon_expand-down_filled.svg'
 import rename from '@/assets/svg/icon_rename_outlined.svg'
 import delIcon from '@/assets/svg/icon_delete.svg'
-import { type Chat, chatApi } from '@/api/chat.ts'
+import { type Chat, chatApi, ChatInfo } from '@/api/chat.ts'
 import { computed, reactive, ref } from 'vue'
 import dayjs from 'dayjs'
 import { getDate } from '@/utils/utils.ts'
@@ -13,7 +13,7 @@ import { useI18n } from 'vue-i18n'
 const props = withDefaults(
   defineProps<{
     currentChatId?: number
-    chatList: Array<Chat>
+    chatList: Array<ChatInfo>
     loading?: boolean
   }>(),
   {
@@ -30,7 +30,7 @@ function groupByDate(chat: Chat) {
   const todayEnd = dayjs(dayjs().format('YYYY-MM-DD') + ' 23:59:59').toDate()
   const weekStart = dayjs(dayjs().subtract(7, 'day').format('YYYY-MM-DD') + ' 00:00:00').toDate()
 
-  const time = getDate(chat.create_time)
+  const time = getDate(chat.latest_record_time ?? chat.create_time)
 
   if (time) {
     if (time >= todayStart && time <= todayEnd) {