Even better pydantic validation example

README.md

@@ -68,27 +68,27 @@ with engine.connect() as conn:
 
 ```python
 from pydantic import BaseModel, Field
+
 from sqla_fancy_core import TableFactory
 
 tf = TableFactory()
 
-def field(col, default=...):
-    return col.info["field"](default)
-
 # Define a table
 class User:
-    name = tf.string(
-        "name", info={"field": lambda default: Field(default, max_length=5)}
-    )
+    name = tf.string("name")
     Table = tf("author")
 
+    @staticmethod
+    def name_field(default=...):
+        return Field(default, max_length=5)
+
 # Define a pydantic schema
 class CreateUser(BaseModel):
-    name: str = field(User.name)
+    name: str = User.name_field()
 
 # Define a pydantic schema
 class UpdateUser(BaseModel):
-    name: str | None = field(User.name, None)
+    name: str | None = User.name_field(None)
 
 assert CreateUser(name="John").model_dump() == {"name": "John"}
 assert UpdateUser(name="John").model_dump() == {"name": "John"}

tests/test_field.py

@@ -8,23 +8,22 @@ def test_field():
 
     tf = TableFactory()
 
-    def field(col, default=...):
-        return col.info["field"](default)
-
     # Define a table
     class User:
-        name = tf.string(
-            "name", info={"field": lambda default: Field(default, max_length=5)}
-        )
+        name = tf.string("name")
         Table = tf("author")
 
+        @staticmethod
+        def name_field(default=...):
+            return Field(default, max_length=5)
+
     # Define a pydantic schema
     class CreateUser(BaseModel):
-        name: str = field(User.name)
+        name: str = User.name_field()
 
     # Define a pydantic schema
     class UpdateUser(BaseModel):
-        name: str | None = field(User.name, None)
+        name: str | None = User.name_field(None)
 
     assert CreateUser(name="John").model_dump() == {"name": "John"}
     assert UpdateUser(name="John").model_dump() == {"name": "John"}