Registrations can be added and deleted

new-registration-app/models.py

@@ -1,9 +1,32 @@
-from sqlmodel import Field, SQLModel
 from datetime import datetime
 
+from sqlmodel import Field, Relationship, SQLModel
+
+
 class Event(SQLModel, table=True):
     id: int | None = Field(default=None, primary_key=True)
     title: str = Field(nullable=False)
     event_time: datetime = Field(nullable=False)
     registration_deadline: datetime = Field(nullable=False)
-    description: str
+    description: str
+    recipe_link: str
+
+    registrations: list["Registration"] = Relationship()
+
+
+class Household(SQLModel, table=True):
+    id: int | None = Field(default=None, primary_key=True)
+    name: str = Field(nullable=False)
+
+
+class Registration(SQLModel, table=True):
+    event_id: int | None = Field(default=None, foreign_key="event.id", primary_key=True)
+    household_id: int | None = Field(
+        default=None, foreign_key="household.id", primary_key=True
+    )
+    num_adult_meals: int
+    num_children_meals: int
+    num_small_children_meals: int
+    comment: str | None
+
+    household: Household = Relationship()