Fully functional implementation of the foreignKey

api/app/account/models.py

@@ -1,10 +1,10 @@
 from uuid import UUID, uuid4
 from enum import Enum
 
-from sqlmodel import Field, SQLModel, select
+from sqlmodel import Field, SQLModel, select, Relationship
 from pydantic import Field as PydField
 
-from category.models import CategoryRead
+from category.models import CategoryRead, Category
 
 
 class AccountType(Enum):
@@ -38,6 +38,7 @@ class AccountBaseId(AccountBase):
     id: UUID | None = Field(default_factory=uuid4, primary_key=True)
 
 class Account(AccountBaseId, table=True):
+    default_category: Category | None = Relationship()
 
     @classmethod
     def create(cls, account, session):
@@ -50,7 +51,7 @@ class Account(AccountBaseId, table=True):
 
     @classmethod
     def list(cls):
-        return select(Account)
+        return select(Account).join(Category)
 
     @classmethod
     def get(cls, session, account_id):
@@ -70,8 +71,7 @@ class Account(AccountBaseId, table=True):
         session.commit()
 
 class AccountRead(AccountBaseId):
-    # default_category: CategoryRead
-    pass
+    default_category: CategoryRead
 
 class AccountWrite(AccountBase):
     default_category_id: UUID = PydField(default=None, json_schema_extra={