Improved error handling for renaming authors and titles (changes related to filesystem and not only to database)

cps/ub.py

@@ -47,12 +47,9 @@ DEFAULT_PASS = "admin123"
 DEFAULT_PORT = int(os.environ.get("CALIBRE_PORT", 8083))
 
 
-
 DEVELOPMENT = False
 
 
-
-
 class UserBase:
     @property
     def is_authenticated(self):
@@ -203,6 +200,7 @@ class Anonymous(AnonymousUserMixin, UserBase):
     def is_authenticated(self):
         return False
 
+
 # Baseclass representing Shelfs in calibre-web inapp.db
 class Shelf(Base):
     __tablename__ = 'shelf'
@@ -290,7 +288,7 @@ class Settings(Base):
     config_google_drive_folder = Column(String)
     config_google_drive_calibre_url_base = Column(String)
     config_google_drive_watch_changes_response = Column(String)
-    config_columns_to_ignore = Column(String)
+    #config_columns_to_ignore = Column(String)
     config_remote_login = Column(Boolean)
     config_use_goodreads = Column(Boolean)
     config_goodreads_api_key = Column(String)
@@ -403,22 +401,22 @@ class Config:
                     (self.config_default_role & ROLE_DELETE_BOOKS == ROLE_DELETE_BOOKS))
 
     def mature_content_tags(self):
-        if (sys.version_info > (3, 0)): #Python3 str, Python2 unicode
+        if sys.version_info > (3, 0): # Python3 str, Python2 unicode
             lstrip = str.lstrip
         else:
             lstrip = unicode.lstrip
         return list(map(lstrip, self.config_mature_content_tags.split(",")))
 
     def get_Log_Level(self):
-        ret_value=""
+        ret_value = ""
         if self.config_log_level == logging.INFO:
-            ret_value='INFO'
+            ret_value = 'INFO'
         elif self.config_log_level == logging.DEBUG:
-            ret_value='DEBUG'
+            ret_value = 'DEBUG'
         elif self.config_log_level == logging.WARNING:
-            ret_value='WARNING'
+            ret_value = 'WARNING'
         elif self.config_log_level == logging.ERROR:
-            ret_value='ERROR'
+            ret_value = 'ERROR'
         return ret_value
 
 
@@ -495,7 +493,7 @@ def migrate_Database():
         conn = engine.connect()
         conn.execute("ALTER TABLE user ADD column `sidebar_view` Integer DEFAULT 1")
         session.commit()
-        create=True
+        create = True
     try:
         if create:
             conn = engine.connect()
@@ -535,11 +533,13 @@ def migrate_Database():
         conn = engine.connect()
         conn.execute("ALTER TABLE Settings ADD column `config_mature_content_tags` String DEFAULT ''")
 
+
 def clean_database():
     # Remove expired remote login tokens
     now = datetime.datetime.now()
     session.query(RemoteAuthToken).filter(now > RemoteAuthToken.expiration).delete()
 
+
 def create_default_config():
     settings = Settings()
     settings.mail_server = "mail.example.com"