Re: Sample Custom Decorator

Thanks Fred! I tried to look through your code and understand what's going on -- but I'm still at a loss. I'm guessing I need to look at the Django source to see what should be returned when you hit a URL and what is passed. The wrapper is confusing me and I've seen that in Django code as well. I'm going to go out on a limb and say it's probably not as easy as I hoped, haha.

On Tue, Oct 11, 2011 at 4:42 PM, Sells, Fred <fred.sells@adventistcare.org> wrote:

I'm no expert but this is what I built to log all user actions -- warts
and all

def decorate(func):
   ##################print 'Decorating %s...' % func.__name__
   def wrapped( *args, **kwargs):
       request = args[0]
       if len(args)>1: command=str(args[1])
       else: command = ''
       ipaddr = request.META['REMOTE_ADDR']
       user = request.session.get('user', None)
       if user: userid = user.userid
       else: userid = '?'
       qs =  extract_querystring_from_request(request)
       parameters = Parameters(**qs)
       resid = parameters.pop('resid', '')
       assessmentid = parameters.pop('id', 0)
       facility = parameters.pop('facility','')
       modified = func.__name__ in ("setvalues", "setraw", "create",
'editcaas')
###        print func.__name__, 'zzzzzzzzzzzzzzzzzzzzz', modified, qs
       modified = modified or (func.__name__=='command' and
command!='print')
       fieldnames = parameters.values().keys()
       for signature in SIGNATURE_FIELDS:
           if signature in fieldnames: command='signit'
       if (not facility) and resid:
           facility = resid[:2]
       option = str(parameters)[:110]
       action = '%s:%s' % (func.__name__, command)
###        print  "\n\n\n\ncalled wrapped function with ", (action,
option, str(parameters))
       record = models.HipaaLog.objects.create(Version=K.VERSION,
userid=userid,
                                               Action=action,
Options=option,
                                               #StartTime =
datetime.datetime.now(),

AssessmentId=assessmentid, ResidentId=resid,
                                               Modified = modified,
                                               IpAddress = ipaddr,
Facility=facility)
       #print record.Modified, record.Action, 'record'
       results = func( *args, **kwargs)
       #record.StopTime = datetime.datetime.now()
       #record.save()
       return results
   ############################print 'done'
   return wrapped

--------------------------------
@decorate
def command(request, *args, **kwargs):
       ...

-----Original Message-----
From: django-users@googlegroups.com
[mailto:django-users@googlegroups.com] On Behalf Of Kurtis
Sent: Tuesday, October 11, 2011 12:03 PM
To: Django users
Subject: Sample Custom Decorator

Hey Guys,

Would anyone be willing to show me an example of a very simple and
dumb decorator for views? I've been trying to read the existing
decorators and play with a couple of snippets but I'm having a lot of
trouble with two aspects -- grabbing the User Instance and Redirecting
somewhere besides Login (without making it look like a hack).

Here's some ugly pseudo-code for what I'm trying to accomplish...

# Custom Decorator
def my_decorator(function = None)

   # Grab Data
   request = how_do_i_get_this?
   user = request.user

   # Perform Logic, Redirect or Continue Normally
   if user.foo():
       redirect to '/foo' URL
   else
       display requested view?


# Decorated TemplateView
url(r'^$', my_decorator(TemplateView.as_view(template_name =
'bar.html'))),

Thanks!

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