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85 lines
2.6 KiB
Python
85 lines
2.6 KiB
Python
"""
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Storing files according to a custom storage system
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``FileField`` and its variations can take a ``storage`` argument to specify how
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and where files should be stored.
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"""
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import random
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import tempfile
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from pathlib import Path
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from django.core.files.storage import FileSystemStorage, default_storage
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from django.db import models
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class CustomValidNameStorage(FileSystemStorage):
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def get_valid_name(self, name):
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# mark the name to show that this was called
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return name + "_valid"
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temp_storage_location = tempfile.mkdtemp()
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temp_storage = FileSystemStorage(location=temp_storage_location)
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def callable_storage():
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return temp_storage
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def callable_default_storage():
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return default_storage
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class CallableStorage(FileSystemStorage):
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def __call__(self):
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# no-op implementation.
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return self
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class Storage(models.Model):
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def custom_upload_to(self, filename):
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return "foo"
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def random_upload_to(self, filename):
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# This returns a different result each time,
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# to make sure it only gets called once.
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return "%s/%s" % (random.randint(100, 999), filename)
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def pathlib_upload_to(self, filename):
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return Path("bar") / filename
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normal = models.FileField(storage=temp_storage, upload_to="tests")
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custom = models.FileField(storage=temp_storage, upload_to=custom_upload_to)
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pathlib_callable = models.FileField(
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storage=temp_storage, upload_to=pathlib_upload_to
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)
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pathlib_direct = models.FileField(storage=temp_storage, upload_to=Path("bar"))
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random = models.FileField(storage=temp_storage, upload_to=random_upload_to)
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custom_valid_name = models.FileField(
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storage=CustomValidNameStorage(location=temp_storage_location),
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upload_to=random_upload_to,
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)
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storage_callable = models.FileField(
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storage=callable_storage, upload_to="storage_callable"
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)
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storage_callable_class = models.FileField(
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storage=CallableStorage, upload_to="storage_callable_class"
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)
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storage_callable_default = models.FileField(
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storage=callable_default_storage, upload_to="storage_callable_default"
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)
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default = models.FileField(
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storage=temp_storage, upload_to="tests", default="tests/default.txt"
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)
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db_default = models.FileField(
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storage=temp_storage, upload_to="tests", db_default="tests/db_default.txt"
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)
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empty = models.FileField(storage=temp_storage)
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limited_length = models.FileField(
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storage=temp_storage, upload_to="tests", max_length=20
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)
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extended_length = models.FileField(
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storage=temp_storage, upload_to="tests", max_length=300
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)
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