}

	if err := DB.Exec("CREATE EXTENSION IF NOT EXISTS pgcrypto;").Error; err != nil {
		t.Errorf("Failed to create extension pgcrypto, got error %v", err)
	}

	DB.Migrator().DropTable(&Yasuo{})

	if err := DB.AutoMigrate(&Yasuo{}); err != nil {
		t.Fatalf("Failed to migrate for uuid default value, got error: %v", err)
	}

	yasuo := Yasuo{Name: "jinzhu"}
	if err := DB.Create(&yasuo).Error; err != nil {

	user := *GetUser("update-many2many", Config{})

	if err := DB.Create(&user).Error; err != nil {
		t.Fatalf("errors happened when create: %v", err)
	}

	user.Languages = []Language{{Code: "zh-CN", Name: "Chinese"}, {Code: "en", Name: "English"}}
	for _, lang := range user.Languages {
		DB.Create(&lang)
	}
	user.Friends = []*User{{Name: "friend-1"}, {Name: "friend-2"}}

from pydantic import BaseModel

app = FastAPI()

reusable_oauth2 = OAuth2(
    flows={
        "password": {
            "tokenUrl": "token",
            "scopes": {"read:users": "Read the users", "write:users": "Create users"},
        }
    },
    auto_error=False,
)


class User(BaseModel):
    username: str


def get_current_user(oauth_header: Optional[str] = Security(reusable_oauth2)):

$ pip install sqlmodel
---> 100%
```

</div>

## Criar o App com um Único Modelo { #create-the-app-with-a-single-model }

Vamos criar a primeira versão mais simples do app com um único modelo **SQLModel**.

Depois, vamos melhorá-lo aumentando a segurança e versatilidade com **múltiplos modelos** abaixo. 🤓

### Criar Modelos { #create-models }

Importe o `SQLModel` e crie um modelo de banco de dados:

existing object replication are not marked as `PENDING` prior to replication.

	}

	if err := DB.Exec("CREATE EXTENSION IF NOT EXISTS pgcrypto;").Error; err != nil {
		t.Errorf("Failed to create extension pgcrypto, got error %v", err)
	}

	DB.Migrator().DropTable(&Yasuo{})

	if err := DB.AutoMigrate(&Yasuo{}); err != nil {
		t.Fatalf("Failed to migrate for uuid default value, got error: %v", err)
	}

	yasuo := Yasuo{Name: "jinzhu"}
	if err := DB.Create(&yasuo).Error; err != nil {

    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None
    tags: set[str] = set()


@app.post(
    "/items/",
    response_model=Item,
    summary="Create an item",
    description="Create an item with all the information, name, description, price, tax and a set of unique tags",
)
async def create_item(item: Item):

				return
			}
		case "Separator":
			z.Separator, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "Separator")
				return
			}
		case "Create":
			z.Create, err = dc.ReadBool()
			if err != nil {
				err = msgp.WrapError(err, "Create")
				return
			}
		case "IncludeDirectories":
			z.IncludeDirectories, err = dc.ReadBool()
			if err != nil {
				err = msgp.WrapError(err, "IncludeDirectories")

    assert response.json() == {
        "detail": [
            {
                "type": "greater_than",
                "loc": ["body", "item", "price"],
                "msg": "Input should be greater than 0",
                "input": -3.0,
                "ctx": {"gt": 0.0},
            }
        ]
    }


def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")

    pass


@app.post("/invoices/", callbacks=invoices_callback_router.routes)
def create_invoice(invoice: Invoice, callback_url: HttpUrl | None = None):
    """
    Create an invoice.

    This will (let's imagine) let the API user (some external developer) create an
    invoice.

    And this path operation will:

    * Send the invoice to the client.
    * Collect the money from the client.