✨ Add support for Pydantic v2 (while keeping support for v1 if v2 is not available), including initial work by AntonDeMeester (#722)

Co-authored-by: Mohamed Farahat <farahats9@yahoo.com>
Co-authored-by: Stefan Borer <stefan.borer@gmail.com>
Co-authored-by: Peter Landry <peter.landry@gmail.com>
Co-authored-by: Anton De Meester <antondemeester+github@gmail.com>

tests/test_deprecations.py

@@ -0,0 +1,30 @@
+import pytest
+from sqlmodel import SQLModel
+
+
+class Item(SQLModel):
+    name: str
+
+
+class SubItem(Item):
+    password: str
+
+
+def test_deprecated_from_orm_inheritance():
+    new_item = SubItem(name="Hello", password="secret")
+    with pytest.warns(DeprecationWarning):
+        item = Item.from_orm(new_item)
+    assert item.name == "Hello"
+    assert not hasattr(item, "password")
+
+
+def test_deprecated_parse_obj():
+    with pytest.warns(DeprecationWarning):
+        item = Item.parse_obj({"name": "Hello"})
+    assert item.name == "Hello"
+
+
+def test_deprecated_dict():
+    with pytest.warns(DeprecationWarning):
+        data = Item(name="Hello").dict()
+    assert data == {"name": "Hello"}