Hi, i need sum inlines field but i no have idea
example for more clean, i have 2 models
in models.py i have:
class ModelA(models.Model):
field1 = charfield(...)
field2 = integeterfield()
.....
CHOICE_TYPE = ((1,"option1"),(2,"option2"),(3,"option3"))
class ModelB(models.Model):
choice = models.Integerfield(choices='CHOICE_TYPE')
men = models.IntegerField()
women = models.IntegerField()
total_men = integerField(editable=False)
total_women = integerField(editable=False)
fk_model_a = fk(ModelA)
def save(self, *args, **kwargs): #this is for sum all 3 data put in
admin inlines
self.total_men += self.men
self.total_women += self.women
super(ModelB, self).save(*args, **kwargs)
in admin.py :
class ModelBInline(admin.TabularInline):
model = ModelB
extra = 3
max_num = 3
class ModelAAdmin(admin.ModelAdmin)
inlines = [ModelBInline]
admin.site.register(ModelA, ModelAAdmin)
but this override save not working, this error when save datas
unsupported operand type(s) for +=: 'NoneType' and 'int'
and the line error is this: self.total_men += self.men
any idea for this working.
Cheers
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