Demo Pydantic validation

README.md

@@ -2,6 +2,8 @@
 
 SQLAlchemy core, but fancier.
 
+### Basic Usage
+
 ```python
 import sqlalchemy as sa
 
@@ -62,3 +64,27 @@ with engine.connect() as conn:
     result = conn.execute(qry).fetchall()
     assert result == [("John Doe", "My Book")], result
 ```
+
+### With Pydantic Validation
+
+```python
+
+from pydantic import BaseModel, Field
+
+from sqla_fancy_core import TableFactory
+
+tf = TableFactory()
+
+# Define a table
+class User:
+    name = tf.string("name", info={"field": Field(..., max_length=5)})
+    Table = tf("author")
+
+# Define a pydantic schema
+class CreateUser(BaseModel):
+    name: str = User.name.info["field"]
+
+assert CreateUser(name="John").model_dump() == {"name": "John"}
+with pytest.raises(ValueError):
+    CreateUser(name="John Doe")
+```

pyproject.toml

@@ -40,7 +40,7 @@ classifiers = [  # Optional
 dependencies = ["sqlalchemy"]
 
 [project.optional-dependencies]
-test = ["pytest", "flake8"]
+test = ["pytest", "flake8", "pydantic"]
 
 [project.urls]
 "Homepage" = "https://github.com/sayanarijit/sqla-fancy-core"

tests/test_table_factory.py

@@ -1,3 +1,6 @@
+import pytest
+
+
 def test_table_factory():
     import sqlalchemy as sa
 
@@ -55,3 +58,24 @@ class Book:
         )
         result = conn.execute(qry).fetchall()
         assert result == [("John Doe", "My Book")], result
+
+
+def test_field():
+    from pydantic import BaseModel, Field
+
+    from sqla_fancy_core import TableFactory
+
+    tf = TableFactory()
+
+    # Define a table
+    class User:
+        name = tf.string("name", info={"field": Field(..., max_length=5)})
+        Table = tf("author")
+
+    # Define a pydantic schema
+    class CreateUser(BaseModel):
+        name: str = User.name.info["field"]
+
+    assert CreateUser(name="John").model_dump() == {"name": "John"}
+    with pytest.raises(ValueError):
+        CreateUser(name="John Doe")