init

app/models.py

@@ -0,0 +1,18 @@
+from typing import Optional, List
+from sqlmodel import SQLModel, Field, Relationship
+
+class AuthorBookLink(SQLModel, table=True):
+    author_id: int | None = Field(default=None, foreign_key="author.id", primary_key=True)
+    book_id: int | None = Field(default=None, foreign_key="book.id", primary_key=True)
+
+class Author(SQLModel, table=True):
+    id: Optional[int] = Field(primary_key=True, index=True)
+    name: str
+
+    books: List["Book"] = Relationship(back_populates="authors", link_model=AuthorBookLink)
+
+class Book(SQLModel, table=True):
+    id: Optional[int] = Field(primary_key=True, index=True)
+    title: str
+    description: str
+    authors: List[Author] = Relationship(back_populates="books", link_model=AuthorBookLink)