Django user entered a number, was that number added to the saved one and saved?

Question

Django

FORMS.PY:

class FishSpeedFarm(forms.ModelForm):
    class Meta:
        model = FishSpeed
        fields = ('maliyk',)

VIEWS.PY:

def fishspeed_farm(request):
    fishspeed_farm = FishSpeedFarm(instance=request.user.fishspeed)
    if request.method == "POST":
        fishspeed_farm = FishSpeedFarm(request.POST,request.FILES,instance=request.user.fishspeed)
        if fishspeed_farm.is_valid():
            fishspeed_farm.save()
    return render(request, 'fishspeed/farm.html',{
        'fishspeed_farm':fishspeed_farm,
})

MODELS.PY

class FishSpeed(models.Model):
    maliyk = models.IntegerField(default="0", verbose_name='Whitebait')

It is necessary that the user enters a number into the form and this number that he entered is added to another one that is already in the admin panel, how to do this?

Answer 1

you update the field from the admin panel via
of = of +1
o.save()