fix for obsolete pydantic parameters

tests/test_fastapi/test_schema_not_allowed_params.py

@@ -0,0 +1,29 @@
+import databases
+import sqlalchemy
+
+import ormar
+
+DATABASE_URL = "sqlite:///db.sqlite"
+database = databases.Database(DATABASE_URL)
+metadata = sqlalchemy.MetaData()
+
+
+class BaseMeta(ormar.ModelMeta):
+    metadata = metadata
+    database = database
+
+
+class Author(ormar.Model):
+    class Meta(BaseMeta):
+        tablename = "authors"
+
+    id: int = ormar.Integer(primary_key=True)
+    name: str = ormar.String(max_length=100)
+    contents: str = ormar.Text()
+
+
+def test_schema_not_allowed():
+    schema = Author.schema()
+    for field_schema in schema.get("properties").values():
+        for key in field_schema.keys():
+            assert "_" not in key, f"Found illegal field in openapi schema: {key}"