l'argomento django-int deve essere una stringa o un numero, non "Tuple"

Question

L'ho guardato per un paio d'ore e non riesco a capire perché sto ricevendo questo messaggio .. .

int() argument must be a string or a number, not 'tuple' 

su questa linea dal mio views.py (NOTA: eccezione occurrs in realtà di un livello di base Django più in profondità, ma questa mia linea di codice che alla fine fa scattare l'eccezione) ...

service_interest = ServiceInterest.objects.get_or_create(service = service, client = client) 

Perché visualizzo questo errore? Per i tuoi vantaggi, vedi sotto models.py, forms.py e uno snippet di views.py.

models.py:

class Client(models.Model): 
    name = models.CharField(max_length=100) 
    email = models.EmailField() 
    site = models.URLField() 
    contact_date = models.DateField(default = datetime.date.today()) 

class Service(models.Model): 
    name = models.CharField(max_length=200) 

class ServiceInterest(models.Model): 
    service = models.ForeignKey('Service') 
    client = models.ForeignKey('Client') 

    class Meta: 
    unique_together = ("service", "client") 

forms.py ... codice

class ContactForm(forms.Form): 


SERVICE_CHOICES = (
    ('first_choice', 'Description of first choice'), 
    ('second_choice', 'Description of second choice'), 
    ('third_choice', 'Description of third choice'), 
    ('other', 'Other') 
) 

    SERVICE_CHOICES_DICT = dict(SERVICE_CHOICES) 

    name = forms.CharField(label='What would you like us to call you?', max_length=200, required=False) 
    email = forms.EmailField(label='What is your email address?', help_text='Ex: yourname@gmail.com') 
    url = forms.URLField(label='If you have a website, please provide a link', required=False, help_text="Ex: www.yoursite.com") 
    service_interest = forms.MultipleChoiceField(label="Please check all of the services you're interested in:", widget=forms.widgets.CheckboxSelectMultiple, choices=SERVICE_CHOICES, required=True) 
    other = forms.CharField(label='If you selected \"Other\", please specify:', max_length=200, required=False) 
    message = forms.CharField(max_length=10000, required=False, label='Any other information you think we should know?', widget=forms.widgets.Textarea) 

    def clean_other(self): 
    cleaned_data = super(ContactForm, self).clean() 
    if 'service_interest' in cleaned_data.keys(): 
     options = cleaned_data['service_interest'] 
     if 'other' in options: 
     other_input = cleaned_data['other'] 
     if other_input == None or len(other_input) == 0: 
      raise forms.ValidationError('Required when \"Other\" is checked') 

    return cleaned_data 

relevent da views.py:

name = form.cleaned_data['name'] 
    email = form.cleaned_data['email'] 
    url = form.cleaned_data['url'] 
    interests = form.cleaned_data['service_interest'] 
    other = form.cleaned_data['other'] 
    message = form.cleaned_data['message'] 

    client = Client.objects.get_or_create(name = name, email = email, site = url) 
    for interest in interests: 
    service = None 
    if(interest != 'other'): 
     service = Service.objects.get_or_create(name = ContactForm.SERVICE_CHOICES_DICT[interest]) 
    else: 
     service = Service.objects.get_or_create(name = other) 

    # Appears to be responsible for the stack trace, even though exception 
    # is one level deeper in... 
    # /Library/Python/2.7/site-packages/django/core/handlers/base.py in get_response 
    service_interest = ServiceInterest.objects.get_or_create(service = service, client = client) 

Answer 1

get_or_create restituisce una tupla, in forma di (instance, created). Il secondo parametro ti dice se doveva crearlo o no, ovviamente abbastanza. Procedere come segue:

client, created = Client.objects.get_or_create(name = name, email = email, site = url)