human
Solve the following python programming problem given the following code:
@ dd.receiver (dd.pre_analyze) 
def set_upload_shortcuts(sender, **kw) : 
    'This is the successor for `quick_upload_buttons`.' 
    UploadType = sender.modules.uploads.UploadType 
    for i in list (Shortcuts.items ()) : 
        def f(obj, ar) : 
            if ((obj is None) or (ar is None)) : 
                return E.div () 
try : 
                utype = UploadType.objects.get (shortcut = i) 
except UploadType.DoesNotExist : 
                return E.div () 
items = [] 
            target = sender.modules.resolve (i.target) 
            sar = ar.spawn_request (actor = target, master_instance = obj, known_values = dict (type = utype)) 
            n = sar.get_total_count () 
            if (n == 0) : 
                iar = target.insert_action.request_from (sar, master_instance = obj) 
                btn = iar.ar2button (None, _ ('Upload'), icon_name = 'page_add', title = _ ('Upload a file from your PC to the server.')) 
                items.append (btn) 
else : 
                if (n == 1) : 
                    after_show = ar.get_status () 
                    obj = sar.data_iterator [0] 
                    items.append (sar.renderer.href_button (dd.build_media_url (obj.file.name), _ ('show'), target = '_blank', icon_name = 'page_go', style = 'vertical-align:-30%;', title = _ ('Open the uploaded file in a new browser window'))) 
                    after_show.update (record_id = obj.pk) 
                    items.append (sar.window_action_button (sar.ah.actor.detail_action, after_show, _ ('Edit'), icon_name = 'application_form', title = _ ('Edit metadata of the uploaded file.'))) 
else : 
                    obj = sar.sliced_data_iterator [0] 
                    items.append (ar.obj2html (obj, pgettext ('uploaded file', 'Last'))) 
                    btn = sar.renderer.action_button (obj, sar, sar.bound_action, _ ('All {0} files').format (n), icon_name = None) 
                    items.append (btn) 
return E.div (* join_elems (items, ', ')) 
vf = dd.VirtualField (dd.DisplayField (i.text), f) 
...

    
    

    Fix the buggy line: dd.inject_field (i.model_spec, i.name, sender)
assistant
#Here is Python code to fix the buggy line: dd.

dd.inject_field (i.model_spec, i.name, vf)