Modell denkt, dass meine Zeichenfolge Tupel ist und nicht speichern

Question

Ich habe ein Modell, das ich überschreiben möchte, speichern, aber wenn ich die Informationen übergeben, denkt es, dass die Zeichenfolge ein Tupel ist, und speichert die Informationen nicht das Model. Das bestimmte Feld, das ich einziehe, ist eine einzelne Zeilenadresse, die wie folgt aussieht: 3107 Eric Motorway, Lake William, GU 71954, aber mein Modell denkt, dass die Kommas ein Tupel sind. Ich habe versucht, es zu einer Schnur und alles zu werfen.

Models.py:

class AddressBook(models.Model): 
    address = models.CharField(max_length=250, unique=True) 
    name = models.CharField(max_length=250) 

    def __str__(self): 
     return self.address 


class Freight(models.Model): 
    pu_location = models.OneToOneField(AddressBook, to_field='address', related_name='pu_location') 
    pu_customer = models.CharField(max_length=200) 
    pu_appt_time = models.DateTimeField(default=datetime.now) 
    po_number = models.CharField(max_length=20) 
    load_number = models.CharField(max_length=10, blank=True, null=True) 
    pallet_count = models.IntegerField(validators=[MaxValueValidator(999)]) 
    content_type = models.CharField(max_length=20, choices=[('Frozen', 'Frozen'), ('Chilled', 'Chilled'), ('Dry', 'Dry')]) 
    cases_count = models.IntegerField(validators=[MaxValueValidator(9999)]) 
    weight = models.IntegerField(validators=[MaxValueValidator(99999)]) 
    del_customer = models.CharField(max_length=200) 
    del_location = models.OneToOneField(AddressBook, to_field='address', related_name='del_location') 
    del_city = models.CharField(max_length=50, blank=True, null=True) 
    del_state = models.CharField(max_length=2, blank=True, null=True) 
    del_appt_time = models.DateTimeField(default=datetime.now) 
    invoice_amount = models.FloatField(default=0.00, validators=[MinValueValidator(0.00), MaxValueValidator(999999.00)]) 

    def save(self, *args, **kwargs): 
     reg = re.compile(r',+?(?P<city>[^,]+),\s+(?P<state>[A-Za-z]{2})') 
     print(self.del_location) 
     extract = reg.search(self.del_location) 
     city = extract.group('city') 
     state = extract.group('state') 
     if not self.del_state: 
      self.del_city = city 
     if not self.del_city: 
      self.del_state = state 

    def __str__(self): 
     return self.po_number, self.pu_customer, self.del_location 

Zurückverfolgungs Info:

Environment: 


Request Method: POST 
Request URL: http://127.0.0.1:8000/admin/dispatch/freight/add/ 

Django Version: 1.11.2 
Python Version: 3.6.1 
Installed Applications: 
['django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles', 
'django.contrib.sites', 
'imagekit', 
'rolepermissions', 
'django_messages', 
'taggit', 
'dispatch'] 
Installed Middleware: 
['django.middleware.security.SecurityMiddleware', 
'django.contrib.sessions.middleware.SessionMiddleware', 
'django.middleware.common.CommonMiddleware', 
'django.middleware.csrf.CsrfViewMiddleware', 
'django.contrib.auth.middleware.AuthenticationMiddleware', 
'django.contrib.messages.middleware.MessageMiddleware', 
'django.middleware.clickjacking.XFrameOptionsMiddleware', 
'dispatch.activeuser_middleware.ActiveUserMiddleware'] 



Traceback: 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner 
    41.    response = get_response(request) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response 
    187.     response = self.process_exception_by_middleware(e, request) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response 
    185.     response = wrapped_callback(request, *callback_args, **callback_kwargs) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/contrib/admin/options.py" in wrapper 
    551.     return self.admin_site.admin_view(view)(*args, **kwargs) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/utils/decorators.py" in _wrapped_view 
    149.      response = view_func(request, *args, **kwargs) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/views/decorators/cache.py" in _wrapped_view_func 
    57.   response = view_func(request, *args, **kwargs) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/contrib/admin/sites.py" in inner 
    224.    return view(request, *args, **kwargs) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/contrib/admin/options.py" in add_view 
    1508.   return self.changeform_view(request, None, form_url, extra_context) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/utils/decorators.py" in _wrapper 
    67.    return bound_func(*args, **kwargs) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/utils/decorators.py" in _wrapped_view 
    149.      response = view_func(request, *args, **kwargs) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/utils/decorators.py" in bound_func 
    63.     return func.__get__(self, type(self))(*args2, **kwargs2) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/contrib/admin/options.py" in changeform_view 
    1408.    return self._changeform_view(request, object_id, form_url, extra_context) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/contrib/admin/options.py" in _changeform_view 
    1452.      self.log_addition(request, new_object, change_message) 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/contrib/admin/options.py" in log_addition 
    724.    object_repr=force_text(object), 

File "/home/jboucher/anaconda3/envs/openroad/lib/python3.6/site-packages/django/utils/encoding.py" in force_text 
    76.      s = six.text_type(s) 

Exception Type: TypeError at /admin/dispatch/freight/add/ 
Exception Value: __str__ returned non-string (type tuple) 

Answer 1

Ihr __str__ ist ein Tupel. Ihre Version:

def __str__(self): 
    return self.po_number, self.pu_customer, self.del_location 

Sie können so etwas wie

def __str__(self): 
    return "%s %s %s" % (self.po_number, self.pu_customer, self.del_location) 

versuchen und es sollte gut funktionieren :)