No autoflush on metadata.db change

cps/db.py

@@ -402,7 +402,10 @@ class AlchemyEncoder(json.JSONEncoder):
                                 el.append(ele.get())
                             else:
                                 el.append(json.dumps(ele, cls=AlchemyEncoder))
-                        data = ",".join(el)
+                        if field == 'authors':
+                            data = " & ".join(el)
+                        else:
+                            data = ",".join(el)
                         if data == '[]':
                             data = ""
                     else:
@@ -542,7 +545,7 @@ class CalibreDB():
                                          backref='books'))
 
         cls.session_factory = scoped_session(sessionmaker(autocommit=False,
-                                                          autoflush=True,
+                                                          autoflush=False,
                                                           bind=cls.engine))
         for inst in cls.instances:
             inst.initSession()
@@ -619,9 +622,12 @@ class CalibreDB():
             .join(*join, isouter=True) \
             .filter(db_filter) \
             .filter(self.common_filters(allow_show_archived))
-        pagination = Pagination(page, pagesize,
-                                len(query.all()))
-        entries = query.order_by(*order).offset(off).limit(pagesize).all()
+        try:
+            pagination = Pagination(page, pagesize,
+                                    len(query.all()))
+            entries = query.order_by(*order).offset(off).limit(pagesize).all()
+        except Exception as e:
+            logger.debug(e)
         for book in entries:
             book = self.order_authors(book)
         return entries, randm, pagination

cps/gdriveutils.py

@@ -394,7 +394,8 @@ def uploadFileToEbooksFolder(destFile, f):
             if len(existingFiles) > 0:
                 driveFile = existingFiles[0]
             else:
-                driveFile = drive.CreateFile({'title': x, 'parents': [{"kind": "drive#fileLink", 'id': parent['id']}],})
+                driveFile = drive.CreateFile({'title': x,
+                                              'parents': [{"kind": "drive#fileLink", 'id': parent['id']}], })
             driveFile.SetContentFile(f)
             driveFile.Upload()
         else:

cps/tasks/convert.py

@@ -123,6 +123,7 @@ class TaskConvert(CalibreTask):
                                          book=book_id, uncompressed_size=os.path.getsize(file_path + format_new_ext))
                 try:
                     local_db.session.merge(new_format)
+                    local_db.session.flush()
                     local_db.session.commit()
                 except SQLAlchemyError as e:
                     local_db.session.rollback()