Fix: add prologue to api. (#9322)

### What problem does this PR solve?


### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

api/apps/canvas_app.py

@@ -28,7 +28,7 @@ from api.db import FileType
 from api.db.services.canvas_service import CanvasTemplateService, UserCanvasService, API4ConversationService
 from api.db.services.document_service import DocumentService
 from api.db.services.file_service import FileService
-from api.db.services.user_service import TenantService
+from api.db.services.user_service import TenantService, UserTenantService
 from api.db.services.user_canvas_version import UserCanvasVersionService
 from api.settings import RetCode
 from api.utils import get_uuid
@@ -101,7 +101,8 @@ def save():
 @login_required
 def get(canvas_id):
     e, c = UserCanvasService.get_by_tenant_id(canvas_id)
-    if not e or c["user_id"] != current_user.id:
+    tids = [t.tenant_id for t in UserTenantService.query(user_id=current_user.id)]
+    if not e or (c["user_id"] != current_user.id and c["user_id"]  not in tids):
         return get_data_error_result(message="canvas not found.")
     return get_json_result(data=c)
 

api/apps/sdk/session.py

@@ -862,5 +862,6 @@ def begin_inputs(tenant_id, agent_id):
             "title": cvs.title,
             "avatar": cvs.avatar,
             "inputs": canvas.get_component_input_form("begin"),
+            "prologue": canvas.get_prologue()
         }
     )

api/db/services/canvas_service.py

@@ -172,6 +172,7 @@ def completion(tenant_id, agent_id, session_id=None, **kwargs):
     conv.message.append({"role": "assistant", "content": txt, "created_at": time.time(), "id": message_id})
     conv.reference = canvas.get_reference()
     conv.errors = canvas.error
+    conv.dsl = str(canvas)
     conv = conv.to_dict()
     API4ConversationService.append_message(conv["id"], conv)
 

api/db/services/llm_service.py

@@ -225,10 +225,11 @@ class TenantLLMService(CommonService):
                 if llm_id == llm["llm_name"]:
                     return llm["model_type"].split(",")[-1]
 
-        for llm in TenantLLMService.query(llm_name=llm_id):
+        for llm in LLMService.query(llm_name=llm_id):
             return llm.model_type
 
-        for llm in LLMService.query(llm_name=llm_id):
+        llm = TenantLLMService.get_or_none(llm_name=llm_id)
+        if llm:
             return llm.model_type
         for llm in TenantLLMService.query(llm_name=llm_id):
             return llm.model_type