add multi column non unique columns

ormar/models/helpers/sqlalchemy.py

@@ -285,24 +285,40 @@ def populate_meta_sqlalchemy_table_if_required(meta: "ModelMeta") -> None:
 
     :param meta: Meta class of the Model without sqlalchemy table constructed
     :type meta: Model class Meta
-    :return: class with populated Meta.table
-    :rtype: Model class
     """
     if not hasattr(meta, "table") and check_for_null_type_columns_from_forward_refs(
         meta
     ):
-        for constraint in meta.constraints:
-            if isinstance(constraint, sqlalchemy.UniqueConstraint):
-                constraint.name = (
-                    f"uc_{meta.tablename}_"
-                    f'{"_".join([str(col) for col in constraint._pending_colargs])}'
-                )
+        set_constraint_names(meta=meta)
         table = sqlalchemy.Table(
             meta.tablename, meta.metadata, *meta.columns, *meta.constraints
         )
         meta.table = table
 
 
+def set_constraint_names(meta: "ModelMeta") -> None:
+    """
+    Populates the names on IndexColumn and UniqueColumns constraints.
+
+    :param meta: Meta class of the Model without sqlalchemy table constructed
+    :type meta: Model class Meta
+    """
+    for constraint in meta.constraints:
+        if isinstance(constraint, sqlalchemy.UniqueConstraint) and not constraint.name:
+            constraint.name = (
+                f"uc_{meta.tablename}_"
+                f'{"_".join([str(col) for col in constraint._pending_colargs])}'
+            )
+        elif (
+            isinstance(constraint, sqlalchemy.Index)
+            and constraint.name == "TEMPORARY_NAME"
+        ):
+            constraint.name = (
+                f"ix_{meta.tablename}_"
+                f'{"_".join([col for col in constraint._pending_colargs])}'
+            )
+
+
 def update_column_definition(
     model: Union[Type["Model"], Type["NewBaseModel"]], field: "ForeignKeyField"
 ) -> None:

ormar/models/metaclass.py

@@ -17,6 +17,7 @@ import sqlalchemy
 from sqlalchemy.sql.schema import ColumnCollectionConstraint
 
 import ormar  # noqa I100
+import ormar.fields.constraints
 from ormar import ModelDefinitionError  # noqa I100
 from ormar.exceptions import ModelError
 from ormar.fields import BaseField
@@ -219,7 +220,8 @@ def update_attrs_from_base_meta(  # noqa: CCR001
                     parent_value=parent_value,
                 )
                 parent_value = [
-                    ormar.UniqueColumns(*x._pending_colargs) for x in parent_value
+                    ormar.fields.constraints.UniqueColumns(*x._pending_colargs)
+                    for x in parent_value
                 ]
             if isinstance(current_value, list):
                 current_value.extend(parent_value)