def add(self, instance):
if hasattr(instance, 'created_at'):
instance.created_at = dateutil.timestamp()
if hasattr(instance, 'updated_at'):
instance.updated_at = dateutil.timestamp()
self.session.add(instance, _warn=True)
# 立即写入
self.session.flush([instance])
return instance
def get_write_file_name(filesize, ext=None):
temp = long(dateutil.timestamp())
one_path = base_convert(divmod(temp, 100)[1], 36)
two_path = base_convert(divmod(temp/100, 1000)[1], 36)
if ext:
return one_path+'/'+two_path+'/'+base_convert(temp, 36)+base_convert(filesize, 36)+'.'+ext
return one_path+'/'+two_path+'/'+base_convert(temp, 36)+base_convert(filesize, 36)
def update_all(self, instances):
if instances is None or len(instances) == 0:
return
has_updated_at = hasattr(instances[0], 'updated_at')
now = dateutil.timestamp() if has_updated_at else None
for instance in instances:
if has_updated_at:
instance.updated_at = now
self.session.merge(instance, load=True)
self.session.flush(instances)
def add_all(self, instances):
"""插入所有
:param instances: 多个实例对象
"""
if instances is None or len(instances) == 0:
return
has_updated_at = hasattr(instances[0], 'updated_at')
has_created_at = hasattr(instances[0], 'created_at')
now = dateutil.timestamp() if has_updated_at or has_created_at else None
for instance in instances:
if has_updated_at:
instance.updated_at = now
if has_created_at:
instance.created_at = now
self.session.add_all(instances)
self.session.flush(instances)
return instances
def update(self, instance):
if hasattr(instance, 'updated_at'):
instance.updated_at = dateutil.timestamp()
self.session.merge(instance, load=True)
self.session.flush([instance])
return instance
def gen_id():
temp = dateutil.timestamp()
return str(uuid.uuid4()).split('-')[0] + _base_convert(temp, 36)
def test_timestamp(self):
timestamp = dateutil.timestamp()
self.assertEqual(len(str(timestamp)), 13)
