how to correctly nest if statement into for loop?

[kang jia]

hi, currently i am doing a car rental website, once it is bigger tthan 1 day's time which is 24 hours, its inventory will be updated and only admin can executed this. However if it is smaller than 24 hours, then it will still remain at the current inventory. the car's booking time is inside my Booking1 table and car_inventory is inside CarModel table.

def inventory(request):
 
    allObj=[]
    for i in Booking1.objects.all():
        #print i.booking_time
        invtime=i.booking_time
        t=str(invtime).split('.')[0]
        now=datetime.datetime.now()
        one_day=60*60*24
        diff=comp_dates(t,str(now).split('.')[0])
        print diff
        if diff>one_day:
            for a in CarModel.objects.all():    
                qtyInStock=a.car_inventory
                orderQuantity = 1
                qtyLeft = int(qtyInStock) - int(orderQuantity)
                a.car_inventory=qtyLeft
                a.save()
                allObj=CarModel.objects.all()
                print allObj
                print "LLLLLLLLLLLLLLLLLL"
        return render_to_response("inventoryupdate.html", {'allObj':allObj})    
        if not diff>one_day:
            return render_to_response("inventory.html")
 

as for this code, it don not error but i never go through my if not condition even through it fulfills this condition. can anyone help me with this, thus it will go through this "if not diff>one_day:" condition.thanks so much for kind help :)

[dazzler]

have you tried using if diff<one_day: ? :D

or what about:

if diff>one_day:
#something
else:
#something

[dazzler]

hmmh, should this "return render_to_response("inventoryupdate.html", {'allObj':allObj})" be inside of your first if statement? because now it isn't

[kang jia]

hmmh, should this "return render_to_response("inventoryupdate.html", {'allObj':allObj})" be inside of your first if statement? because now it isn't

thanks for your kind help, in that scenario it works according to your way, but one thing i do not understand is that why everytime it will go to updateinventory page even the content has changed to inventory page.it seems quite strange to me. i mean how the updateinventory page knows inventory pages' content??Although it works in the way i want yet i do not understand its logic..hmm, if possible, can explain this to me, thanks so much.:)

however, i would like to ask you about one more scenario.in fact, it is the same logic but did not work in the other part of my coding. the coding is in the following:

def confirmUp(request):
    Array=[]
    ba={}
    q=request.session['BK_id']
    uID=request.user.id
    #ba=Booking1.objects.get(id=q)
    #print ba.id
 
    for i in Booking1.objects.all():
 
        if  i.id == q:
            print "PPPPPPPPP"
            ba=Booking1.objects.get(id=q) 
            print "LLLLLLLLLLLLLLLL"
            Array.append(ba)
            return render_to_response('proceed.html',{'Array': Array })
 
        else:
            return HttpResponseRedirect("/Notexist/")    
 

it seems never go into if statement even the condition is fulfilled at "if i.id == q:"
thanks for your kind help :)