Openstack Horizon(kilo)二次開發之匿名訪問View

須要注意的是，這種方式不適用於class view.

1. 修改horizon.base.require_auth:

   def require_auth(view_func):
   	    """Performs user authentication check.
   
   	    Similar to Django's `login_required` decorator, except that this throws
   	    :exc:`~horizon.exceptions.NotAuthenticated` exception if the user is not
   	    signed-in.
   	    """
   	    from horizon.exceptions import NotAuthenticated  # noqa
   
   	    @functools.wraps(view_func, assigned=available_attrs(view_func))
   	    def dec(request, *args, **kwargs):
   	        #此處添加一個判斷，若是view_func的public屬性爲True則跳過認證.
   	        if getattr(view_func,'public',False):
   	            return view_func(request, *args, **kwargs)
   	        if request.user.is_authenticated():
   	            return view_func(request, *args, **kwargs)
   	        raise NotAuthenticated(_("Please log in to continue."))
   	    return dec

2. 修改horizon.base.require_perms:

   def require_perms(view_func, required):
   	    from horizon.exceptions import NotAuthorized  # noqa
   	    # We only need to check each permission once for a view, so we'll use a set
   	    current_perms = getattr(view_func, '_required_perms', set([]))
   	    view_func._required_perms = current_perms | set(required)
   
   	    @functools.wraps(view_func, assigned=available_attrs(view_func))
   	    def dec(request, *args, **kwargs):
   	        #此處添加一個判斷，若是view_func的public屬性爲True則跳過認證.
   	        if getattr(view_func,'public',False):
   	            return view_func(request, *args, **kwargs)
   	        if request.user.is_authenticated():
   	            if request.user.has_perms(view_func._required_perms):
   	                return view_func(request, *args, **kwargs)
   	        raise NotAuthorized(_("You are not authorized to access %s")
   	                            % request.path)
   
   	    # If we don't have any permissions, just return the original view.
   	    if required:
   	        return dec
   	    else:
   	        return view_func

3. 給須要匿名訪問的View設置屬性public=True

   setattr(view_func,'public',True)