How to correctly write a condition in view Django?

Using Django Using the ORM
1

The meaning of the program is to select analogues from the list and link them. The problem is that it binds all values regardless of the selected ones.
I think the problem is in the wrong if. How to fix it

My view:

def editpart(request, id, **kwargs):

    if request.method == 'POST':
        part.name = request.POST.get("name")
        part.description = request.POST.get("description")

        analogs = Part.objects.all()
        for analog_zap in analogs:
            analog = analog_zap.analog
                if Part.objects.filter(analog_analog = analog):
                        part.analog.add(analog_zap.id)

My model:

class Part(models.Model):
    name = models.CharField('Название', max_length=100)
    analog = models.ManyToManyField('self', blank=True, related_name='AnalogParts')
2

not sure what you’re trying to do with this–do you only want to do the “add” if there’s at least a Part object that satisfies the condition in filter?

In that case, you’re looking for: if Part.objects.filter(analog_analog = analog).exists()

3

The problem is that it binds all values regardless of the selected ones

4 
part.name = request.POST.get("name")
part.description = request.POST.get("description")

Where is part coming from? You’re just assigning to its attributes but there is no mention of where it’s defined

5

part = Part.objects.get(id=id)