fix: handle None and empty lists for image and video data in history message generation

Author: wxg0103

apps/application/flow/step_node/image_understand_step_node/impl/base_image_understand_node.py

@@ -207,7 +207,7 @@ def generate_history_ai_message(self, chat_record):
     def generate_history_human_message_for_details(self, chat_record):
         for data in chat_record.details.values():
             if self.node.id == data['node_id'] and 'image_list' in data:
-                image_list = data['image_list']
+                image_list = data['image_list'] or []
                 if len(image_list) == 0 or data['dialogue_type'] == 'WORKFLOW':
                     return HumanMessage(content=chat_record.problem_text)
 
@@ -238,7 +238,7 @@ def generate_history_human_message(self, chat_record):
 
         for data in chat_record.details.values():
             if self.node.id == data['node_id'] and 'image_list' in data:
-                image_list = data['image_list']
+                image_list = data['image_list'] or []
                 if len(image_list) == 0 or data['dialogue_type'] == 'WORKFLOW':
                     return HumanMessage(content=chat_record.problem_text)
                 file_id_list = []

apps/application/flow/step_node/video_understand_step_node/impl/base_video_understand_node.py

@@ -209,7 +209,7 @@ def generate_history_ai_message(self, chat_record):
     def generate_history_human_message_for_details(self, chat_record):
         for data in chat_record.details.values():
             if self.node.id == data['node_id'] and 'video_list' in data:
-                video_list = data['video_list']
+                video_list = data['video_list'] or  []
                 # 增加对 None 和空列表的检查
                 if not video_list or len(video_list) == 0 or data['dialogue_type'] == 'WORKFLOW':
                     return HumanMessage(content=chat_record.problem_text)
@@ -240,7 +240,7 @@ def generate_history_human_message(self, chat_record, video_model):
 
         for data in chat_record.details.values():
             if self.node.id == data['node_id'] and 'video_list' in data:
-                video_list = data['video_list']
+                video_list = data['video_list'] or  []
                 if video_list is None or len(video_list) == 0 or data['dialogue_type'] == 'WORKFLOW':
                     return HumanMessage(content=chat_record.problem_text)
                 file_id_list = []