port #989 to new branch due to lack of perms to fix conflicts (#1276)

ormar/fields/foreign_key.py

@@ -262,6 +262,8 @@ def ForeignKey(  # type: ignore # noqa CFQ002
     sql_nullable = kwargs.pop("sql_nullable", None)
     sql_nullable = nullable if sql_nullable is None else sql_nullable
 
+    index = kwargs.pop("index", False)
+
     validate_not_allowed_fields(kwargs)
     pk_only_model = None
     if to.__class__ == ForwardRef:
@@ -296,7 +298,7 @@ def ForeignKey(  # type: ignore # noqa CFQ002
         related_name=related_name,
         virtual=virtual,
         primary_key=False,
-        index=False,
+        index=index,
         default=None,
         server_default=None,
         onupdate=onupdate,

tests/test_model_definition/test_model_definition.py

@@ -54,6 +54,26 @@ class ExampleModel2(Model):
     test_string: str = ormar.String(max_length=250)
 
 
+class User(ormar.Model):
+    ormar_config = base_ormar_config.copy(tablename="users")
+
+    id: int = ormar.Integer(primary_key=True)
+
+
+class Account(ormar.Model):
+    ormar_config = base_ormar_config.copy(tablename="accounts")
+
+    id: int = ormar.Integer(primary_key=True)
+    user: User = ormar.ForeignKey(User, index=False)
+
+
+class Purchase(ormar.Model):
+    ormar_config = base_ormar_config.copy(tablename="purchases")
+
+    id: int = ormar.Integer(primary_key=True)
+    user: User = ormar.ForeignKey(User, index=True)
+
+
 create_test_database = init_tests(base_ormar_config)
 
 
@@ -218,3 +238,8 @@ def test_json_conversion_in_model():
             test_string="test",
             test_bool=True,
         )
+
+
+def test_foreign_key_index():
+    assert Account.ormar_config.table.columns.user.index is False
+    assert Purchase.ormar_config.table.columns.user.index is True