Getting __init__() got an unexpected keyword argument 'instance' with CreateView of Django
Some details:
Request Method: GET
Request URL: http://localhost:8080/user/create
Django Version: 1.5.1
Exception Type: TypeError
Exception Value: ____init____() got an unexpected keyword argument 'instance'
Exception Location: /place/venv/local/lib/python2.7/site-packages/django/views/generic/edit.py in get_form, line 35
Python Executable: /place/venv/bin/python
Python Version: 2.7.3
views.py
class UserCreateView(CreateView):
model = models.User
form_class = forms.UserForm
urls.py
url(r'^user/create$', UserCreateView.as_view(), name='user_create'),
forms.py
class UserForm(forms.Form):
GROUP_CHOICES = [(-1, '[Choose]')]
GROUP_CHOICES += [(group.id, group.name.capitalize()) for group in auth.models.Group.objects.all()]
email = forms.EmailField(
label='Email',
widget=forms.TextInput(attrs={'placeholder': 'Email'})
)
first_name = forms.CharField(
label='First Name',
widget=forms.TextInput(attrs={'placeholder': 'First Name'})
)
last_name = forms.CharField(
label='Last Name',
widget=forms.TextInput(attrs={'placeholder': 'Last Name'})
)
password = forms.CharField(
label='Password',
widget=forms.PasswordInput(attrs={'placeholder': 'Password'})
)
password_validation = forms.CharField(
label='Repeat Password',
widget=forms.PasswordInput(attrs={'placeholder': 'Repeat Password'})
)
mobile_number = forms.CharField(
label='Mobile Number',
widget=forms.TextInput(attrs={'placeholder': 'Mobile Number'})
)
office_number = forms.CharField(
label='Office Number',
widget=forms.TextInput(attrs={'placeholder': 'Office Number'})
)
group = forms.ChoiceField(
label='Group',
choices=GROUP_CHOICES
)
def clean_password_validation(self):
if self.cleaned_data['password'] == self.cleaned_data['password_validation']:
return self.cleaned_data['password_validation']
else:
raise forms.ValidationError('Passwords don\'t match')
def clean_group(self):
if self.cleaned_data['group'] != -1:
return self.cleaned_data['group']
else:
raise forms.ValidationError('Please, choose a group')
models.py
class User(models.Model):
user = models.OneToOneField(auth.models.User)
mobile_number = models.CharField(max_length=64)
office_number = models.CharField(max_length=64)
Solution 1:
I suspect class UserForm
should be model form. You may want to change fields, but it should be derived from `ModelForm.
So change form definition to
class UserForm(forms.ModelForm):
class Meta:
model = User
fields = [...] # list of fields you want from model
#or define fields that you want.
....
Solution 2:
I override __init__() method incorrectly, without initial arguments, as show below
class MyForm(forms.ModelForm):
...
def __init__(self):
super(CaseForm, self).__init__()
...
And get this error as result
TypeError at /case/create
__init__() got an unexpected keyword argument 'initial'
To fix it, I set arguments to __init__() and pass them when call super class __init__(), see result below
class MyForm(forms.ModelForm):
...
def __init__(self, *args, **kwargs):
super(CaseForm, self).__init__(*args, **kwargs)
...
Solution 3:
forms.py Defines Fields in Square Brackets like fields=['field 1', 'field 2',...]
class CustomerForm(forms.ModelForm):
class Meta:
model = Customer
fields = ['fname','lname','email','address','city','state','zip','username','password','age','mobile','phone']