add default value

api/controllers/console/datasets/datasets_document.py

@@ -271,7 +271,7 @@ class DatasetDocumentListApi(Resource):
         parser.add_argument('process_rule', type=dict, required=False, location='json')
         parser.add_argument('duplicate', type=bool, nullable=False, location='json')
         parser.add_argument('original_document_id', type=str, required=False, location='json')
-        parser.add_argument('doc_form', type=str, required=True, nullable=False, location='json')
+        parser.add_argument('doc_form', type=str, default='text_model', required=True, nullable=False, location='json')
         args = parser.parse_args()
 
         if not dataset.indexing_technique and not args['indexing_technique']:
@@ -316,7 +316,7 @@ class DatasetInitApi(Resource):
                             nullable=False, location='json')
         parser.add_argument('data_source', type=dict, required=True, nullable=True, location='json')
         parser.add_argument('process_rule', type=dict, required=True, nullable=True, location='json')
-        parser.add_argument('doc_form', type=str, required=True, nullable=False, location='json')
+        parser.add_argument('doc_form', type=str, default='text_model', required=True, nullable=False, location='json')
         args = parser.parse_args()
 
         # validate args