Format + Erreur de clé - solde - Django

Question

Je reçois une erreur de format pour un champ de formulaire qui n'est pas un champ de formulaire de date. Je ne sais pas pourquoi il me donne une forme de quelque chose sans rapport avec le champ de formulaire que je suis en train de remplir ...

Voici l'erreur exacte qui montre jusqu'à:

ValidationError at /transfer/ 
["'0' value has an invalid date format. It must be in YYYY-MM-DD format."] 
Request Method: POST 
Request URL: http://localhost:8000/transfer/ 
Django Version: 1.8.6 
Exception Type: ValidationError 
Exception Value:  
["'0' value has an invalid date format. It must be in YYYY-MM-DD format."] 
Exception Location: C:\Users\OmarJandali\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\models\fields\__init__.py in to_python, line 1287 
Python Executable: C:\Users\OmarJandali\AppData\Local\Programs\Python\Python36\python.exe 
Python Version: 3.6.1 
Python Path:  
['C:\\Users\\OmarJandali\\Desktop\\opentab\\opentab', 
'C:\\Users\\OmarJandali\\AppData\\Local\\Programs\\Python\\Python36\\python36.zip', 
'C:\\Users\\OmarJandali\\AppData\\Local\\Programs\\Python\\Python36\\DLLs', 
'C:\\Users\\OmarJandali\\AppData\\Local\\Programs\\Python\\Python36\\lib', 
'C:\\Users\\OmarJandali\\AppData\\Local\\Programs\\Python\\Python36', 
'C:\\Users\\OmarJandali\\AppData\\Local\\Programs\\Python\\Python36\\lib\\site-packages'] 

Voici le fichier modèles:

class Profile(models.Model): 
    user = models.ForeignKey(User, on_delete=models.CASCADE) # server 
    first_name = models.CharField(max_length=25, default='first') 
    last_name = models.CharField(max_length=25, default='last') 
    dob = models.DateField(default='0') 
    city = models.CharField(max_length=45, default='city') # user 
    state = models.CharField(max_length=25, default='state') 
    phone = models.BigIntegerField(default=0) # user 
    privacy = models.SmallIntegerField(default=1) # user 
    balance = models.DecimalField(decimal_places=2, max_digits=9, default=0) 
    created = models.DateTimeField(auto_now_add=True) # server 

voici le form.py:

class TransferForm(forms.ModelForm): 
    acct_choices = (('Tabz', 'Tabz - Username'), 
        ('Wells Fargo', 'Wells Fargo - Username')) 
    main = forms.TypedChoiceField(
     choices=acct_choices 
    ) 
    transfer = forms.TypedChoiceField(
     choices=acct_choices 
    ) 
    class Meta: 
     model = Transfers 
     fields = ['main', 'transfer', 'amount', 'memo'] 

est la partie ici qui est en train de traiter le f ORM et créer le nouveau profil:

L'erreur est dans les lignes 9-14

if main == 'Tabz': 
        profiles = Profile.objects.all() 
        for profile in profiles: 
         if currentUser == profile.user: 
          currentProfile = profile 
          currentProfile.balance = currentProfile.balance - amount 
          currentProfile.save() 
         else: 
          new_balance = amount 
          new_profile = Profile.objects.create(
           user = currentUser, 
           balance = new_balance, 
          ) 
        message = 'You have transfered ' + amount + ' from your Tabz account to main account' 
        new_activity = Acitivty.objects.create(
         user = currentUser, 
         description = message, 
         status = 1, 
         category = 1, 
        ) 
       if transfer == 'Tabz': 
        profiles = Profile.objects.all() 
        for profile in profiles: 
         if currentUser == profile.user: 
          currentProfile = profile 
          currentProfile.balance = currentProfile.balance + amount 
          currentProfile.save() 
         else: 
          new_balance = amount 
          new_profile = Profile.objects.create(
           user = currentUser, 
           balance = new_balance 
          ) 
        message = 'You have transfered ' + amount + ' from your Tabz account to main account' 
        new_activity = Acitivty.objects.create(
         user = currentUser, 
         description = message, 
         status = 1, 
         category = 1, 
        ) 
       return redirect('home_page') 

Answer 1

que vous avez pris un DateField et vous avez fourni une valeur defualt de 0 ainsi l'erreur vient,

donc changer cette ligne

dob = models.DateField(default='0') 

à

dob = models.DateField(default='1900-01-01') 

puis makemigrations et migrate. et puis essayez de soumettre votre formulaire