Obyek File

The django.core.files module and its submodules contain built-in classes for basic file handling in Django.

Kelas File

class File(file_object, name=None)[sumber]

The File class is a thin wrapper around a Python file object with some Django-specific additions. Internally, Django uses this class when it needs to represent a file.

Obyek File mempunyai atribut dan metode berikut:

name

Nama dari berkas termasuk jalur relatif dari MEDIA_ROOT.

size[sumber]

Ukuran berkas dalam byte.

file

The underlying file object that this class wraps.

Berhati-hatilah dengan atribut ini dalam subkelas.

Some subclasses of File, including ContentFile and FieldFile, may replace this attribute with an object other than a Python file object. In these cases, this attribute may itself be a File subclass (and not necessarily the same subclass). Whenever possible, use the attributes and methods of the subclass itself rather than the those of the subclass's file attribute.

mode

Suasana baca/tulis untuk berkas.

open(mode=None, *args, **kwargs)[sumber]

Open or reopen the file (which also does File.seek(0)). The mode argument allows the same values as Python's built-in open(). *args and **kwargs are passed after mode to Python's built-in open().

When reopening a file, mode will override whatever mode the file was originally opened with; None means to reopen with the original mode.

Itu dapat digunakan sebagai pengelola konteks, misalnya with file.open() as f:.

__iter__()[sumber]

Iterate over the file yielding one line at a time.

chunks(chunk_size=None)[sumber]

Iterate over the file yielding "chunks" of a given size. chunk_size defaults to 64 KB.

This is especially useful with very large files since it allows them to be streamed off disk and avoids storing the whole file in memory.

multiple_chunks(chunk_size=None)[sumber]

Returns True if the file is large enough to require multiple chunks to access all of its content give some chunk_size.

close()[sumber]

Tutup berkas.

Sebagai tambahan pada metode-metode terlampir, File membuka atribut-atribut berikut dan metode dari file object: encoding, fileno, flush, isatty, newlines, read, readinto, readline, readlines, seek, tell, truncate, write, writelines, readable(), writable(), dan seekable() nya.

Kelas ContentFile

class ContentFile(content, name=None)[sumber]

Kelas ContentFile mewarisi dari File, tapi tidak seperti File itu berjalan pada isi string (byte juga didukung), daripada sebuah berkas sebenarnya. Sebagai contoh:

from django.core.files.base import ContentFile

f1 = ContentFile("esta frase está en español")
f2 = ContentFile(b"these are bytes")

Kelas ImageFile

class ImageFile(file_object, name=None)[sumber]

Django menyediakan sebuah kelas siap-pakai khususnya untuk gambar. django.core.files.images.ImageFile mewarisi semua atribut dan metode dari File, dan tambahannya menyediakan berikut:

width[sumber]

Lebar gambar dalam pixel.

height[sumber]

Tinggi gambar dalam pixel.

Metode tambahan pada berkas-berkas dilampirkan pada obyek

File apapun yang berkaitan dengan sebuah obyek (seperti Car.photo, dibawah) akan juga mempunyai sepasang metode-metode tambahan:

File.save(name, content, save=True)

Saves a new file with the file name and contents provided. This will not replace the existing file, but will create a new file and update the object to point to it. If save is True, the model's save() method will be called once the file is saved. That is, these two lines:

>>> car.photo.save("myphoto.jpg", content, save=False)
>>> car.save()

are equivalent to:

>>> car.photo.save("myphoto.jpg", content, save=True)

Note that the content argument must be an instance of either File or of a subclass of File, such as ContentFile.

File.delete(save=True)

Removes the file from the model instance and deletes the underlying file. If save is True, the model's save() method will be called once the file is deleted.

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