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"""
Storing files according to a custom storage system
``FileField`` and its variations can take a ``storage`` argument to specify how
and where files should be stored.
"""
import random
import tempfile
from django.core.files.storage import FileSystemStorage
from django.db import models
class OldStyleFSStorage(FileSystemStorage):
"""
Storage backend without support for the ``max_length`` argument in
``get_available_name()`` and ``save()``; for backward-compatibility and
deprecation testing.
"""
def get_available_name(self, name):
return name
def save(self, name, content):
return super(OldStyleFSStorage, self).save(name, content)
temp_storage_location = tempfile.mkdtemp()
temp_storage = FileSystemStorage(location=temp_storage_location)
class Storage(models.Model):
def custom_upload_to(self, filename):
return 'foo'
def random_upload_to(self, filename):
# This returns a different result each time,
# to make sure it only gets called once.
return '%s/%s' % (random.randint(100, 999), filename)
normal = models.FileField(storage=temp_storage, upload_to='tests')
custom = models.FileField(storage=temp_storage, upload_to=custom_upload_to)
random = models.FileField(storage=temp_storage, upload_to=random_upload_to)
default = models.FileField(storage=temp_storage, upload_to='tests', default='tests/default.txt')
empty = models.FileField(storage=temp_storage)
limited_length = models.FileField(storage=temp_storage, upload_to='tests', max_length=20)
extended_length = models.FileField(storage=temp_storage, upload_to='tests', max_length=300)
old_style = models.FileField(
storage=OldStyleFSStorage(location=temp_storage_location),
upload_to='tests',
)
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