var globalTestTmpDir = os.TempDir()

// reseed - returns a new seed every time the function is called.
func reseed() uint32 {
	return uint32(time.Now().UnixNano() + int64(os.Getpid()))
}

// nextSuffix - provides a new unique suffix every time the function is called.
func nextSuffix() string {
	randmu.Lock()
	r := randN
	// Initial seed required, generate one.
	if r == 0 {
		r = reseed()
	}

}
```

/// info | Información

Nota cómo la clave `images` ahora tiene una lista de objetos de imagen.

///

## Modelos anidados profundamente { #deeply-nested-models }

Puedes definir modelos anidados tan profundamente como desees:

{* ../../docs_src/body_nested_models/tutorial007_py310.py hl[7,12,18,21,25] *}

/// info | Información

# Body – Verschachtelte Modelle { #body-nested-models }

Mit **FastAPI** können Sie (dank Pydantic) beliebig tief verschachtelte Modelle definieren, validieren, dokumentieren und verwenden.

## Listen als Felder { #list-fields }

Sie können ein Attribut als Kindtyp definieren, zum Beispiel eine Python-`list`.

{* ../../docs_src/body_nested_models/tutorial001_py310.py hl[12] *}

And it will be annotated / documented accordingly too.

## Nested Models { #nested-models }

Each attribute of a Pydantic model has a type.

But that type can itself be another Pydantic model.

So, you can declare deeply nested JSON "objects" with specific attribute names, types and validations.

All that, arbitrarily nested.

### Define a submodel { #define-a-submodel }

# Corpo - Modelos aninhados { #body-nested-models }

Com o **FastAPI**, você pode definir, validar, documentar e usar modelos arbitrariamente e profundamente aninhados (graças ao Pydantic).

## Campos do tipo Lista { #list-fields }

Você pode definir um atributo como um subtipo. Por exemplo, uma `list` do Python:

{* ../../docs_src/body_nested_models/tutorial001_py310.py hl[12] *}

# Body - Вложенные модели { #body-nested-models }

С помощью **FastAPI** вы можете определять, валидировать, документировать и использовать модели произвольной глубины вложенности (благодаря Pydantic).

## Поля-списки { #list-fields }

Вы можете определить атрибут как подтип. Например, Python-тип `list`:

{* ../../docs_src/body_nested_models/tutorial001_py310.py hl[12] *}

*PrivateKey { fipsSelfTest() fips140.RecordApproved() var seed [32]byte drbg.Read(seed[:]) priv := newPrivateKey(&seed, params44) fipsPCT(priv) return priv } func GenerateKey65() *PrivateKey { fipsSelfTest() fips140.RecordApproved() var seed [32]byte drbg.Read(seed[:]) priv := newPrivateKey(&seed, params65) fipsPCT(priv) return priv } func GenerateKey87() *PrivateKey { fipsSelfTest() fips140.RecordApproved() var seed [32]byte drbg.Read(seed[:]) priv := newPrivateKey(&seed, params87) fipsPCT(priv)...

drbg.Generate(b[:size], additionalInput); reseedRequired { // See SP 800-90A Rev. 1, Section 9.3.1, Steps 6-8, as explained in // Section 9.3.2: if Generate reports a reseed is required, the // additional input is passed to Reseed along with the entropy and // then nulled before the next Generate call. entropy.Depleted(func(seed *[48]byte) { drbg.Reseed(seed, additionalInput) }) additionalInput = nil continue } b = b[size:] } } // DefaultReader is a sentinel type, embedded in the default // [crypto/rand.Reader],...

	if err := DB.First(&User{}, "name = ?", user2.Name).Error; err != nil {
		t.Fatalf("Should not find rollbacked nested record")
	}
}

func TestDisabledNestedTransaction(t *testing.T) {
	var (
		user  = *GetUser("transaction-nested", Config{})
		user1 = *GetUser("transaction-nested-1", Config{})
		user2 = *GetUser("transaction-nested-2", Config{})
	)

			wantResult: `{"nested":[[2,3,4],[7,8.5,9]]}`,
		},
		{
			name:       "select-in-combine-and-no",
			query:      `SELECT s.nested from s3object s WHERE (8.5 IN s.nested[*][*]) AND (s.id = 0)`,
			wantResult: ``,
		},
		{
			name:       "select-in-nested-float-no-flat",
			query:      `SELECT s.nested from s3object s WHERE 8.5 IN s.nested[*]`,