fix

prompt/api.py

@@ -6,6 +6,7 @@ from ninja.errors import HttpError
 from django.shortcuts import get_object_or_404
 from django.contrib.auth.decorators import login_required
 
+from django.db.models import Count
 from .models import Conversation, Message
 from .schemas import ConversationOut, MessageOut
 from account.models import RoleChoices
@@ -16,7 +17,9 @@ router = Router()
 @router.get("/conversations/", response=List[ConversationOut])
 @login_required
 def list_conversations(request, task_id: int = None, user_id: int = None):
-    convs = Conversation.objects.select_related("user", "task")
+    convs = Conversation.objects.select_related("user", "task").annotate(
+        msg_count=Count("messages")
+    )
     # Normal users can only see their own
     if request.user.role == "normal":
         convs = convs.filter(user=request.user)
@@ -24,6 +27,7 @@ def list_conversations(request, task_id: int = None, user_id: int = None):
         convs = convs.filter(user_id=user_id)
     if task_id:
         convs = convs.filter(task_id=task_id)
+    convs = convs.order_by("-msg_count", "-created")
     return [ConversationOut.from_conv(c) for c in convs]
 
 

prompt/consumers.py

@@ -1,6 +1,7 @@
 import json
 from channels.generic.websocket import AsyncWebsocketConsumer
 from channels.db import database_sync_to_async
+from django.db.models import Count
 from .models import Conversation, Message
 from .llm import stream_chat, extract_code
 
@@ -35,12 +36,6 @@ class PromptConsumer(AsyncWebsocketConsumer):
         msg_type = data.get("type", "message")
 
         if msg_type == "new_conversation":
-            self.conversation = await self.create_conversation()
-            await self.send(text_data=json.dumps({
-                "type": "init",
-                "conversation_id": str(self.conversation.id),
-                "messages": [],
-            }))
             return
 
         prompt = data.get("content", "").strip()
@@ -88,20 +83,16 @@ class PromptConsumer(AsyncWebsocketConsumer):
 
     @database_sync_to_async
     def get_or_create_conversation(self):
-        conv = Conversation.objects.filter(
+        conv = (
-            user=self.user, task_id=self.task_id, is_active=True
+            Conversation.objects.filter(user=self.user, task_id=self.task_id)
-        ).first()
+            .annotate(msg_count=Count("messages"))
+            .order_by("-msg_count", "-created")
+            .first()
+        )
         if not conv:
             conv = Conversation.objects.create(user=self.user, task_id=self.task_id)
         return conv
 
-    @database_sync_to_async
-    def create_conversation(self):
-        Conversation.objects.filter(
-            user=self.user, task_id=self.task_id, is_active=True
-        ).update(is_active=False)
-        return Conversation.objects.create(user=self.user, task_id=self.task_id)
-
     @database_sync_to_async
     def delete_message(self, message):
         message.delete()
@@ -119,7 +110,7 @@ class PromptConsumer(AsyncWebsocketConsumer):
 
     @database_sync_to_async
     def get_history(self):
-        messages = self.conversation.messages.all()
+        messages = self.conversation.messages.filter(source="conversation")
         return [
             {
                 "role": m.role,
@@ -136,5 +127,5 @@ class PromptConsumer(AsyncWebsocketConsumer):
 
     @database_sync_to_async
     def get_history_for_llm(self):
-        messages = self.conversation.messages.all()
+        messages = self.conversation.messages.filter(source="conversation")
         return [{"role": m.role, "content": m.content} for m in messages]

prompt/migrations/0003_add_message_source.py

@@ -0,0 +1,18 @@
+# Generated by Django 6.0.1 on 2026-03-31 07:10
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('prompt', '0002_message_prompt_level'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='message',
+            name='source',
+            field=models.CharField(default='ai', max_length=10),
+        ),
+    ]

prompt/migrations/0004_update_message_source_default.py

@@ -0,0 +1,18 @@
+# Generated by Django 6.0.1 on 2026-03-31 07:24
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('prompt', '0003_add_message_source'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='message',
+            name='source',
+            field=models.CharField(default='conversation', max_length=12),
+        ),
+    ]

prompt/models.py

@@ -23,6 +23,7 @@ class Message(models.Model):
         Conversation, on_delete=models.CASCADE, related_name="messages"
     )
     role = models.CharField(max_length=10)  # "user" or "assistant"
+    source = models.CharField(max_length=12, default="conversation")  # "conversation" or "manual"
     content = models.TextField()
     code_html = models.TextField(null=True, blank=True)
     code_css = models.TextField(null=True, blank=True)

submission/api.py

@@ -36,28 +36,43 @@ def create_submission(request, payload: SubmissionIn):
     创建一个新的提交
     """
     task = get_object_or_404(Task, id=payload.task_id)
-    conversation = None
-    if payload.conversation_id:
-        from prompt.models import Conversation
-        conversation = get_object_or_404(
-            Conversation, id=payload.conversation_id, user=request.user
-        )
-        conversation.is_active = False
-        conversation.save(update_fields=["is_active"])
 
-    sub = Submission.objects.create(
+    if payload.prompt:
+        from prompt.models import Conversation, Message
+        from django.db.models import Count as _Count
+        conversation = (
+            Conversation.objects.filter(user=request.user, task=task)
+            .annotate(msg_count=_Count("messages"))
+            .order_by("-msg_count", "-created")
+            .first()
+        )
+        if not conversation:
+            conversation = Conversation.objects.create(
+                user=request.user, task=task, is_active=False
+            )
+        Message.objects.create(
+            conversation=conversation, role="user", content=payload.prompt, source="manual"
+        )
+        Message.objects.create(
+            conversation=conversation,
+            role="assistant",
+            content="",
+            code_html=payload.html,
+            code_css=payload.css,
+            code_js=payload.js,
+            source="manual",
+        )
+        from .classifier import classify_conversation_messages
+        threading.Thread(target=classify_conversation_messages, args=(conversation.id,), daemon=True).start()
+
+    Submission.objects.create(
         user=request.user,
         task=task,
         html=payload.html,
         css=payload.css,
         js=payload.js,
-        conversation=conversation,
     )
 
-    if conversation:
-        from .classifier import classify_conversation_messages
-        threading.Thread(target=classify_conversation_messages, args=(conversation.id,), daemon=True).start()
-
 
 @router.get("/", response=List[SubmissionOut])
 @paginate
@@ -69,7 +84,6 @@ def list_submissions(request, filters: SubmissionFilter = Query(...)):
     submissions = (
         Submission.objects.select_related("task", "user")
         .defer("html", "css", "js")
-        .exclude(conversation__isnull=False, html__isnull=True, css__isnull=True, js__isnull=True)
     )
 
     if filters.task_id:
@@ -143,7 +157,6 @@ def list_by_user_task(request, user_id: int, task_id: int):
     )
     return (
         Submission.objects.filter(user_id=user_id, task_id=task_id)
-        .exclude(conversation__isnull=False, html__isnull=True, css__isnull=True, js__isnull=True)
         .select_related("task", "user")
         .defer("html", "css", "js")
         .annotate(my_score=user_rating_subquery)

submission/migrations/0010_remove_conversation_fk.py

@@ -0,0 +1,17 @@
+# Generated by Django 6.0.1 on 2026-03-31 06:52
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('submission', '0009_add_view_count'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='submission',
+            name='conversation',
+        ),
+    ]

submission/models.py

@@ -9,7 +9,6 @@ from django.dispatch import receiver  # 导入receiver
 
 from account.models import RoleChoices, User
 from task.models import Task
-from prompt.models import Conversation
 
 
 class FlagChoices(models.TextChoices):
@@ -41,10 +40,6 @@ class Submission(TimeStampedModel):
     html = models.TextField(null=True, blank=True, verbose_name="HTML代码")
     css = models.TextField(null=True, blank=True, verbose_name="CSS代码")
     js = models.TextField(null=True, blank=True, verbose_name="JS代码")
-    conversation = models.ForeignKey(
-        Conversation, on_delete=models.SET_NULL, null=True, blank=True,
-        related_name="submissions", verbose_name="对话"
-    )
     flag = models.CharField(
         max_length=10,
         choices=FlagChoices.choices,

submission/schemas.py

@@ -8,7 +8,7 @@ class SubmissionIn(Schema):
     html: Optional[str] = None
     css: Optional[str] = None
     js: Optional[str] = None
-    conversation_id: Optional[UUID] = None
+    prompt: Optional[str] = None
 
 
 class SubmissionOut(Schema):
@@ -24,7 +24,6 @@ class SubmissionOut(Schema):
     html: Optional[str] = None
     css: Optional[str] = None
     js: Optional[str] = None
-    conversation_id: Optional[UUID] = None
     flag: Optional[str] = None
     zone: Optional[str] = None
     submit_count: int = 0
@@ -87,7 +86,6 @@ class SubmissionOut(Schema):
             "html": submission.html,
             "css": submission.css,
             "js": submission.js,
-            "conversation_id": submission.conversation_id,
             "flag": submission.flag,
             "created": submission.created.isoformat(),
             "modified": submission.modified.isoformat(),