Mooris

var arr = [];
$('span').each(function() {
	var that = $(this).attr('title');
	var span = parseInt(that.match(/\d+/ig));
	arr.push(span);
	var sum = 0;
	for (var i = 0; i < arr.length; i++) {
		sum = sum + parseInt(arr[i]);
	}
	$('#id_price').val(sum);
});

class MasterChoiceField(forms.ModelChoiceField):
     def label_from_instance(self, obj):
         return obj.get_full_name()


class MasterAdmin(admin.ModelAdmin):
    ...

    def formfield_for_foreignkey(self, db_field, request, **kwargs):
        if db_field.name == 'master':
            return MasterChoiceField(queryset=User.objects.all())
        return super().formfield_for_foreignkey(db_field, request, **kwargs)

def abonstat(request):
    abons = {}
    abform = AbonStatForm(request.GET)
    if abform.is_valid():
        if abform.cleaned_data['client']:
            abons = Uslugi.objects.filter(
                            client_id=abform.cleaned_data['client'])
    return render(request, 'clients/abonstat.html',
                  {'abons': abons, 'abform': abform})