Fix external knowledge Issues: (#17685) (#17843)

Author: briqt

api/core/rag/retrieval/dataset_retrieval.py

@@ -206,6 +206,7 @@ def retrieve(
             source = {
                 "dataset_id": item.metadata.get("dataset_id"),
                 "dataset_name": item.metadata.get("dataset_name"),
+                "document_id": item.metadata.get("document_id") or item.metadata.get("title"),
                 "document_name": item.metadata.get("title"),
                 "data_source_type": "external",
                 "retriever_from": invoke_from.to_source(),

api/core/tools/utils/dataset_retriever/dataset_retriever_tool.py

@@ -86,6 +86,7 @@ def _run(self, query: str) -> str:
                         "position": position,
                         "dataset_id": item.metadata.get("dataset_id"),
                         "dataset_name": item.metadata.get("dataset_name"),
+                        "document_id": item.metadata.get("document_id") or item.metadata.get("title"),
                         "document_name": item.metadata.get("title"),
                         "data_source_type": "external",
                         "retriever_from": self.retriever_from,

api/core/workflow/nodes/knowledge_retrieval/knowledge_retrieval_node.py

@@ -259,6 +259,7 @@ def _fetch_dataset_retriever(self, node_data: KnowledgeRetrievalNodeData, query:
                     "_source": "knowledge",
                     "dataset_id": item.metadata.get("dataset_id"),
                     "dataset_name": item.metadata.get("dataset_name"),
+                    "document_id": item.metadata.get("document_id") or item.metadata.get("title"),
                     "document_name": item.metadata.get("title"),
                     "data_source_type": "external",
                     "retriever_from": "workflow",