# Dokumentasi Django 4.2.9.dev20231204082947

# Pengecualian Django

Django raises some of its own exceptions as well as standard Python exceptions.

## Pengecualian Inti Django

Kelas-kelas pengecualian inti django ditentukan dalam `django.core.exceptions`.

### `AppRegistryNotReady`

exception `AppRegistryNotReady`

  This exception is raised when attempting to use models before the app loading process, which initializes the ORM, is complete.

### `ObjectDoesNotExist`

exception `ObjectDoesNotExist`

  The base class for `Model.DoesNotExist` exceptions. A `try/except` for `ObjectDoesNotExist` will catch `DoesNotExist` exceptions for all models.

  See `get()`.

### `EmptyResultSet`

exception `EmptyResultSet`

  `EmptyResultSet` may be raised during query generation if a query won't return any results. Most Django projects won't encounter this exception, but it might be useful for implementing custom lookups and expressions.

### `FullResultSet`

exception `FullResultSet`

New in Django 4.2:

`FullResultSet` may be raised during query generation if a query will match everything. Most Django projects won't encounter this exception, but it might be useful for implementing custom lookups and expressions.

### `FieldDoesNotExist`

exception `FieldDoesNotExist`

  The `FieldDoesNotExist` exception is raised by a model's `_meta.get_field()` method when the requested field does not exist on the model or on the model's parents.

### `MultipleObjectsReturned`

exception `MultipleObjectsReturned`

  The base class for `Model.MultipleObjectsReturned` exceptions. A `try/except` for `MultipleObjectsReturned` will catch `MultipleObjectsReturned` exceptions for all models.

  See `get()`.

### `SuspiciousOperation`

exception `SuspiciousOperation`

  The `SuspiciousOperation` exception is raised when a user has performed an operation that should be considered suspicious from a security perspective, such as tampering with a session cookie. Subclasses of `SuspiciousOperation` include:

  - `DisallowedHost`
  - `DisallowedModelAdminLookup`
  - `DisallowedModelAdminToField`
  - `DisallowedRedirect`
  - `InvalidSessionKey`
  - `RequestDataTooBig`
  - `SuspiciousFileOperation`
  - `SuspiciousMultipartForm`
  - `SuspiciousSession`
  - `TooManyFieldsSent`
  - `TooManyFilesSent`

  If a `SuspiciousOperation` exception reaches the ASGI/WSGI handler level it is logged at the `Error` level and results in a `HttpResponseBadRequest`. See the logging documentation for more information.

Changed in Django 3.2.18:

`SuspiciousOperation` is raised when too many files are submitted.

### `PermissionDenied`

exception `PermissionDenied`

  Pengecualian `PermissionDenied` dimunculkan ketika seorang pengguna tidak memiliki perizinan untuk melakukan tindakan diminta.

### `ViewDoesNotExist`

exception `ViewDoesNotExist`

  Pengecualian `ViewDoesNotExist` dimunculkan oleh `django.urls` ketika tampilan diminta tidak ada.

### `MiddlewareNotUsed`

exception `MiddlewareNotUsed`

  Pengecualian `MiddlewareNotUsed` dimunculkan ketika sebuah middleware tidak digunakan dalam konfigurasi peladen.

### `ImproperlyConfigured`

exception `ImproperlyConfigured`

  The `ImproperlyConfigured` exception is raised when Django is somehow improperly configured -- for example, if a value in `settings.py` is incorrect or unparseable.

### `FieldError`

exception `FieldError`

  Pengecualian `FieldError` dimunculkan ketika ada masalah dengan bidang model. Ini terjadi untuk beberapa alasan:

  - Sebuah bidang dalam sebuah model bertabrakan dengan sebuah bidang dari nama sama dari sebuah kelas dasar abstrak
  - Sebuah putaran tidak terbatasdisebutkan oleh pengurutan
  - Sebuah kata kunci tidak dapat diuraikan dari saringan prameter
  - Sebuah bidang tidak dapat ditentukan dari katakunci dalam parameter permintaan
  - Gabungan tidak diizinkan pada bidang tertentu
  - Nama bidang tidak sah
  - Sebuah permintaan mengandung argumen order_by tidak sah

### `ValidationError`

exception `ValidationError`

  The `ValidationError` exception is raised when data fails form or model field validation. For more information about validation, see Form and Field Validation, Model Field Validation and the Validator Reference.

#### `NON_FIELD_ERRORS`

`NON_FIELD_ERRORS`

`ValidationError`s that don't belong to a particular field in a form or model are classified as `NON_FIELD_ERRORS`. This constant is used as a key in dictionaries that otherwise map fields to their respective list of errors.

### `BadRequest`

exception `BadRequest`

  The `BadRequest` exception is raised when the request cannot be processed due to a client error. If a `BadRequest` exception reaches the ASGI/WSGI handler level it results in a `HttpResponseBadRequest`.

### `RequestAborted`

exception `RequestAborted`

  The `RequestAborted` exception is raised when an HTTP body being read in by the handler is cut off midstream and the client connection closes, or when the client does not send data and hits a timeout where the server closes the connection.

  It is internal to the HTTP handler modules and you are unlikely to see it elsewhere. If you are modifying HTTP handling code, you should raise this when you encounter an aborted request to make sure the socket is closed cleanly.

### `SynchronousOnlyOperation`

exception `SynchronousOnlyOperation`

  The `SynchronousOnlyOperation` exception is raised when code that is only allowed in synchronous Python code is called from an asynchronous context (a thread with a running asynchronous event loop). These parts of Django are generally heavily reliant on thread-safety to function and don't work correctly under coroutines sharing the same thread.

  If you are trying to call code that is synchronous-only from an asynchronous thread, then create a synchronous thread and call it in that. You can accomplish this is with `asgiref.sync.sync_to_async()`.

## Pengecualian Penyelesai URL

Pengecualian Penyelesai URL ditentukan dalam `django.urls`.

### `Resolver404`

exception `Resolver404`

  Pengeculian `Resolver404` dimunculkan dengan `resolve()` jika jalur dilewatkan ke `resolve()` tidak memetakan ke tampilan. Itu adalah sebuah subkelas dari `django.http.Http404`.

### `NoReverseMatch`

exception `NoReverseMatch`

  Pengecualian `NoReverseMatch` dimunculkan dengan `django.urls` ketika URL cocok dalam URLconf anda tidak dapat dicirikan berdasarkan pada parameter disokong.

## Pengecualian Basisdata

Pengecualian basisdata mungkin diimpor dari `django.db`.

Django membungkus pengecualian basisdata standar sehingga kode Django anda mempunyai jaminan penerapan umum pada kelas-kelas ini.

exception `Error`

exception `InterfaceError`

exception `DatabaseError`

exception `DataError`

exception `OperationalError`

exception `IntegrityError`

exception `InternalError`

exception `ProgrammingError`

exception `NotSupportedError`

Pembungkus Django untuk pengecualian basisdata berperilaku tepatnya sama seperti pengecualian basisdata pokok. Lihat:pep:249, Spesifikasi API Basisdata Python v2.0, untuk informasi lebih jauh.

As per PEP 3134, a `__cause__` attribute is set with the original (underlying) database exception, allowing access to any additional information provided.

exception `models.``ProtectedError`

Raised to prevent deletion of referenced objects when using `django.db.models.PROTECT`. `models.ProtectedError` is a subclass of `IntegrityError`.

exception `models.``RestrictedError`

Raised to prevent deletion of referenced objects when using `django.db.models.RESTRICT`. `models.RestrictedError` is a subclass of `IntegrityError`.

## HTTP Exceptions

HTTP exceptions may be imported from `django.http`.

### `UnreadablePostError`

exception `UnreadablePostError`

  `UnreadablePostError` dimunculkan ketika pengguna membatalkan unggahan.

## Eksepsi Sesi

Eksepsi sesi ditentukan dalam `django.contrib.sessions.exceptions`.

### `SessionInterrupted`

exception `SessionInterrupted`

  `SessionInterrupted` is raised when a session is destroyed in a concurrent request. It's a subclass of `BadRequest`.

## Pengecualian Transaksi

Pengecualian transaksi ditentukan dalam `django.db.transaction`.

### `TransactionManagementError`

exception `TransactionManagementError`

  `TransactionManagementError` dimunculkan untuk apapun dan semua masalah terkait pada transaksi basisdata.

## Pengecualian Kerangka Kerja Percobaan

Pengecualian disediakan oleh paket `django.test`.

### `RedirectCycleError`

exception `client.``RedirectCycleError`

  `RedirectCycleError` is raised when the test client detects a loop or an overly long chain of redirects.

## Pengecualian Python

Django raises built-in Python exceptions when appropriate as well. See the Python documentation for further information on the Built-in Exceptions.