fix: simplify validation checks in document and paragraph retrieval methods

Author: liuruibin

apps/knowledge/serializers/document.py

@@ -606,8 +606,7 @@ def download_source_file(self):
             return FileSerializer.Operate(data={'id': file.id}).get(with_valid=True)
 
         def one(self, with_valid=False):
-            if with_valid:
-                self.is_valid(raise_exception=True)
+            self.is_valid(raise_exception=True)
             query_set = QuerySet(model=Document)
             query_set = query_set.filter(**{'id': self.data.get("document_id")})
             return native_search({

apps/knowledge/serializers/paragraph.py

@@ -361,6 +361,7 @@ def is_valid(self, *, raise_exception=False):
                 raise AppApiException(500, _('Knowledge id does not exist'))
 
         def get_query_set(self):
+            self.is_valid()
             query_set = QuerySet(model=Paragraph)
             query_set = query_set.filter(
                 **{'knowledge_id': self.data.get('knowledge_id'), 'document_id': self.data.get("document_id")})