Fix logger reference in Cheatsheets parser and add database existence check in update script

Author: Bornunique911

application/utils/external_project_parsers/parsers/cheatsheets_parser.py

@@ -124,7 +124,7 @@ def register_supplemental_cheatsheets(self, cache: db.Node_collection):
                             )
                         )
                     except Exception as exc:
-                        logger.warning(
+                        self.logger.warning(
                             "Failed to add supplemental cheatsheet link for cre_id=%s cre=%s section=%s: %s",
                             cre_id,
                             getattr(cre, "id", None),

scripts/update-cheatsheets.sh

@@ -15,6 +15,11 @@ if ! python -c "import flask" >/dev/null 2>&1; then
   pip install -r "$ROOT_DIR/requirements.txt"
 fi
 
+if [[ ! -f "$DB_PATH" ]]; then
+  echo "Database file does not exist: $DB_PATH" >&2
+  exit 1
+fi
+
 BACKUP_FILE="${DB_PATH}.$(date +%Y%m%d%H%M%S).bak"
 cp "$DB_PATH" "$BACKUP_FILE"
 if [[ ! -f "$BACKUP_FILE" ]]; then