✨ Add support for all Field parameters from Pydantic 1.9.0 and above, make Pydantic 1.9.0 the minimum required version (#440)

Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>

tests/test_pydantic/test_field.py

@@ -0,0 +1,57 @@
+from decimal import Decimal
+from typing import Optional, Union
+
+import pytest
+from pydantic import ValidationError
+from sqlmodel import Field, SQLModel
+from typing_extensions import Literal
+
+
+def test_decimal():
+    class Model(SQLModel):
+        dec: Decimal = Field(max_digits=4, decimal_places=2)
+
+    Model(dec=Decimal("3.14"))
+    Model(dec=Decimal("69.42"))
+
+    with pytest.raises(ValidationError):
+        Model(dec=Decimal("3.142"))
+    with pytest.raises(ValidationError):
+        Model(dec=Decimal("0.069"))
+    with pytest.raises(ValidationError):
+        Model(dec=Decimal("420"))
+
+
+def test_discriminator():
+    # Example adapted from
+    # [Pydantic docs](https://pydantic-docs.helpmanual.io/usage/types/#discriminated-unions-aka-tagged-unions):
+
+    class Cat(SQLModel):
+        pet_type: Literal["cat"]
+        meows: int
+
+    class Dog(SQLModel):
+        pet_type: Literal["dog"]
+        barks: float
+
+    class Lizard(SQLModel):
+        pet_type: Literal["reptile", "lizard"]
+        scales: bool
+
+    class Model(SQLModel):
+        pet: Union[Cat, Dog, Lizard] = Field(..., discriminator="pet_type")
+        n: int
+
+    Model(pet={"pet_type": "dog", "barks": 3.14}, n=1)  # type: ignore[arg-type]
+
+    with pytest.raises(ValidationError):
+        Model(pet={"pet_type": "dog"}, n=1)  # type: ignore[arg-type]
+
+
+def test_repr():
+    class Model(SQLModel):
+        id: Optional[int] = Field(primary_key=True)
+        foo: str = Field(repr=False)
+
+    instance = Model(id=123, foo="bar")
+    assert "foo=" not in repr(instance)