def get_storage_hash(self, storage):
"""
Return a hex string hash for a storage object (or string containing a
pickle of a storage object).
"""
try:
# Make sure that pickle is getting a string, since it can choke
# with unicode.
storage_obj = pickle.loads(str(self.pickle))
except:
# We need to return some storage, and if there's an exception then
# it is most likely the default_storage (since that fails with a
# recursion error due to LazyObject "awesomeness").
storage_obj = default_storage
storage_cls = storage_obj.__class__
name = '%s.%s' % (storage_cls.__module__, storage_cls.__name__)
return hashlib.md5(name).hexdigest()
python类default_storage()的实例源码
def __init__(self, verbose_name=None, name=None, upload_to='', storage=None, **kwargs):
self._primary_key_set_explicitly = 'primary_key' in kwargs
self._unique_set_explicitly = 'unique' in kwargs
self.storage = storage or default_storage
self.upload_to = upload_to
kwargs['max_length'] = kwargs.get('max_length', 100)
super(FileField, self).__init__(verbose_name, name, **kwargs)
def deconstruct(self):
name, path, args, kwargs = super(FileField, self).deconstruct()
if kwargs.get("max_length") == 100:
del kwargs["max_length"]
kwargs['upload_to'] = self.upload_to
if self.storage is not default_storage:
kwargs['storage'] = self.storage
return name, path, args, kwargs
def get_storage():
''' return configured Storage '''
return default_storage # for default filesystem, (location=settings.MEDIA_ROOT)
def __init__(self, upload_to='', storage=None, accepted_types=None,
*args, **kwargs):
self.storage = storage or default_storage
self.upload_to = upload_to
self.accepted_types = accepted_types
kwargs['max_length'] = kwargs.get('max_length', 200)
super(S3FileField, self).__init__(*args, **kwargs)
def deconstruct(self):
name, path, args, kwargs = super(S3FileField, self).deconstruct()
if self.upload_to != '':
kwargs['upload_to'] = self.upload_to
if self.storage != default_storage:
kwargs['storage'] = self.storage
if kwargs.get('max_length') == 200:
del kwargs['max_length']
return name, path, args, kwargs
def __init__(self, verbose_name=None, name=None, upload_to='', storage=None, **kwargs):
self._primary_key_set_explicitly = 'primary_key' in kwargs
self._unique_set_explicitly = 'unique' in kwargs
self.storage = storage or default_storage
self.upload_to = upload_to
kwargs['max_length'] = kwargs.get('max_length', 100)
super(FileField, self).__init__(verbose_name, name, **kwargs)
def deconstruct(self):
name, path, args, kwargs = super(FileField, self).deconstruct()
if kwargs.get("max_length") == 100:
del kwargs["max_length"]
kwargs['upload_to'] = self.upload_to
if self.storage is not default_storage:
kwargs['storage'] = self.storage
return name, path, args, kwargs
0013_auto__del_storage__del_field_source_storage__del_field_thumbnail_stora.py 文件源码
项目：gougo
作者: amaozhao
项目源码
文件源码
阅读 20
收藏 0
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def backwards(self, orm):
# Removing index on 'Thumbnail', fields ['storage_hash']
db.delete_index('easy_thumbnails_thumbnail', ['storage_hash'])
# Removing index on 'Source', fields ['storage_hash']
db.delete_index('easy_thumbnails_source', ['storage_hash'])
# Adding model 'Storage'
db.create_table('easy_thumbnails_storage', (
('pickle', self.gf('django.db.models.fields.TextField')()),
('hash', self.gf('django.db.models.fields.CharField')(max_length=40, db_index=True)),
('id', self.gf('django.db.models.fields.AutoField')(primary_key=True)),
))
db.send_create_signal('easy_thumbnails', ['Storage'])
# Create a storage object. This may obviously not be the storage
# object which the source / thumbnail objects actually belong to but
# at least it lets us reverse migrate.
storage = orm.Storage()
storage.pickle = pickle.dumps(default_storage)
storage.hash = hashlib.md5(storage.pickle).hexdigest()
storage.save()
# Adding field 'Source.storage'
db.add_column('easy_thumbnails_source', 'storage', self.gf('django.db.models.fields.related.ForeignKey')(default=storage.pk, to=orm['easy_thumbnails.Storage']), keep_default=False)
# Adding field 'Thumbnail.storage'
db.add_column('easy_thumbnails_thumbnail', 'storage', self.gf('django.db.models.fields.related.ForeignKey')(default=storage.pk, to=orm['easy_thumbnails.Storage']), keep_default=False)
def __init__(self, verbose_name=None, name=None, upload_to='', storage=None, **kwargs):
self._primary_key_set_explicitly = 'primary_key' in kwargs
self.storage = storage or default_storage
self.upload_to = upload_to
kwargs['max_length'] = kwargs.get('max_length', 100)
super(FileField, self).__init__(verbose_name, name, **kwargs)
def deconstruct(self):
name, path, args, kwargs = super(FileField, self).deconstruct()
if kwargs.get("max_length") == 100:
del kwargs["max_length"]
kwargs['upload_to'] = self.upload_to
if self.storage is not default_storage:
kwargs['storage'] = self.storage
return name, path, args, kwargs
def __init__(self, verbose_name=None, name=None, upload_to='', storage=None, **kwargs):
self._primary_key_set_explicitly = 'primary_key' in kwargs
self._unique_set_explicitly = 'unique' in kwargs
self.storage = storage or default_storage
self.upload_to = upload_to
kwargs['max_length'] = kwargs.get('max_length', 100)
super(FileField, self).__init__(verbose_name, name, **kwargs)
def deconstruct(self):
name, path, args, kwargs = super(FileField, self).deconstruct()
if kwargs.get("max_length") == 100:
del kwargs["max_length"]
kwargs['upload_to'] = self.upload_to
if self.storage is not default_storage:
kwargs['storage'] = self.storage
return name, path, args, kwargs
def __init__(self, verbose_name=None, name=None, upload_to='', storage=None, **kwargs):
self._primary_key_set_explicitly = 'primary_key' in kwargs
self._unique_set_explicitly = 'unique' in kwargs
self.storage = storage or default_storage
self.upload_to = upload_to
kwargs['max_length'] = kwargs.get('max_length', 100)
super(FileField, self).__init__(verbose_name, name, **kwargs)
def deconstruct(self):
name, path, args, kwargs = super(FileField, self).deconstruct()
if kwargs.get("max_length") == 100:
del kwargs["max_length"]
kwargs['upload_to'] = self.upload_to
if self.storage is not default_storage:
kwargs['storage'] = self.storage
return name, path, args, kwargs
def __init__(self, verbose_name=None, name=None, upload_to='', storage=None, **kwargs):
self._primary_key_set_explicitly = 'primary_key' in kwargs
self.storage = storage or default_storage
self.upload_to = upload_to
kwargs['max_length'] = kwargs.get('max_length', 100)
super(FileField, self).__init__(verbose_name, name, **kwargs)
def deconstruct(self):
name, path, args, kwargs = super(FileField, self).deconstruct()
if kwargs.get("max_length") == 100:
del kwargs["max_length"]
kwargs['upload_to'] = self.upload_to
if self.storage is not default_storage:
kwargs['storage'] = self.storage
return name, path, args, kwargs
def __init__(self, verbose_name=None, name=None, upload_to='', storage=None,
**kwargs):
self.storage = storage or default_storage
self.upload_to = upload_to
super().__init__(verbose_name, name, **kwargs)
def deconstruct(self):
name, path, args, kwargs = super().deconstruct()
kwargs['upload_to'] = self.upload_to
if self.storage is not default_storage:
kwargs['storage'] = self.storage
return name, path, args, kwargs
def __init__(self, verbose_name=None, name=None, upload_to='', storage=None, **kwargs):
self._primary_key_set_explicitly = 'primary_key' in kwargs
self._unique_set_explicitly = 'unique' in kwargs
self.storage = storage or default_storage
self.upload_to = upload_to
if callable(upload_to):
self.generate_filename = upload_to
kwargs['max_length'] = kwargs.get('max_length', 100)
super(FileField, self).__init__(verbose_name, name, **kwargs)
def deconstruct(self):
name, path, args, kwargs = super(FileField, self).deconstruct()
if kwargs.get("max_length", None) == 100:
del kwargs["max_length"]
kwargs['upload_to'] = self.upload_to
if self.storage is not default_storage:
kwargs['storage'] = self.storage
return name, path, args, kwargs
