这更像是一个普通的 Python 问题,而不是 Flask 问题。
这段代码来自https://github.com/mitsuhiko/flask/blob/master/flask/views.py#L18。
@classmethod
def as_view(cls, name, *class_args, **class_kwargs):
"""Converts the class into an actual view function that can be used
with the routing system. Internally this generates a function on the
fly which will instantiate the :class:`View` on each request and call
the :meth:`dispatch_request` method on it.
The arguments passed to :meth:`as_view` are forwarded to the
constructor of the class.
"""
def view(*args, **kwargs):
self = view.view_class(*class_args, **class_kwargs)
return self.dispatch_request(*args, **kwargs)
if cls.decorators:
view.__name__ = name
view.__module__ = cls.__module__
for decorator in cls.decorators:
view = decorator(view)
# we attach the view class to the view function for two reasons:
# first of all it allows us to easily figure out what class-based
# view this thing came from, secondly it's also used for instantiating
# the view class so you can actually replace it with something else
# for testing purposes and debugging.
view.view_class = cls
view.__name__ = name
view.__doc__ = cls.__doc__
view.__module__ = cls.__module__
view.methods = cls.methods
return view
有人可以向我解释这个as_view()
函数如何将它的参数转发给View
类的构造函数,就像它在方法注释中所说的那样?
如果不是直接的解释,也许会朝着正确的方向推进,特别是我需要了解 Python 方面的知识,以便更好地了解正在发生的事情。
谢谢