Django上传文件的那些参数

# ################## 默认文件上传配置 ########################
from django.core.files.uploadhandler import MemoryFileUploadHandler
from django.core.files.uploadhandler import TemporaryFileUploadHandler

# List of upload handler classes to be applied in order.
FILE_UPLOAD_HANDLERS = [
    'django.core.files.uploadhandler.MemoryFileUploadHandler',
    'django.core.files.uploadhandler.TemporaryFileUploadHandler',
]

# Maximum size, in bytes, of a request before it will be streamed to the
# file system instead of into memory.
# 允许内存中上传文件的大小
#   合法：InMemoryUploadedFile对象（写在内存）         -> 上传文件小于等于 FILE_UPLOAD_MAX_MEMORY_SIZE
# 不合法：TemporaryUploadedFile对象（写在临时文件）     -> 上传文件大于    FILE_UPLOAD_MAX_MEMORY_SIZE 且 小于 DATA_UPLOAD_MAX_MEMORY_SIZE

FILE_UPLOAD_MAX_MEMORY_SIZE = 2621440  # i.e. 2.5 MB

# Maximum size in bytes of request data (excluding file uploads) that will be
# read before a SuspiciousOperation (RequestDataTooBig) is raised.
# 允许上传内容的大小（包含文件和其他请求内容）
DATA_UPLOAD_MAX_MEMORY_SIZE = 2621440  # i.e. 2.5 MB

# Maximum number of GET/POST parameters that will be read before a
# SuspiciousOperation (TooManyFieldsSent) is raised.
# 允许的上传文件数
DATA_UPLOAD_MAX_NUMBER_FIELDS = 1000

# Directory in which upload streamed files will be temporarily saved. A value of
# `None` will make Django use the operating system's default temporary directory
# (i.e. "/tmp" on *nix systems).
# 临时文件夹路径
FILE_UPLOAD_TEMP_DIR = None

# The numeric mode to set newly-uploaded files to. The value should be a mode
# you'd pass directly to os.chmod; see https://docs.python.org/3/library/os.html#files-and-directories.
# 文件权限
FILE_UPLOAD_PERMISSIONS = None

# The numeric mode to assign to newly-created directories, when uploading files.
# The value should be a mode as you'd pass to os.chmod;
# see https://docs.python.org/3/library/os.html#files-and-directories.
# 文件夹权限
FILE_UPLOAD_DIRECTORY_PERMISSIONS = None