add pgvecto_rs support and upgrade SQLAlchemy (#3833)

api/models/__init__.py

@@ -1,5 +1,8 @@
 from enum import Enum
 
+from sqlalchemy import CHAR, TypeDecorator
+from sqlalchemy.dialects.postgresql import UUID
+
 
 class CreatedByRole(Enum):
     """
@@ -42,3 +45,27 @@ class CreatedFrom(Enum):
             if role.value == value:
                 return role
         raise ValueError(f'invalid createdFrom value {value}')
+
+
+class StringUUID(TypeDecorator):
+    impl = CHAR
+    cache_ok = True
+
+    def process_bind_param(self, value, dialect):
+        if value is None:
+            return value
+        elif dialect.name == 'postgresql':
+            return str(value)
+        else:
+            return value.hex
+
+    def load_dialect_impl(self, dialect):
+        if dialect.name == 'postgresql':
+            return dialect.type_descriptor(UUID())
+        else:
+            return dialect.type_descriptor(CHAR(36))
+
+    def process_result_value(self, value, dialect):
+        if value is None:
+            return value
+        return str(value)