The problem with Jaydeep's code is the 'username' field is not getting
populated in the auth_user table. Django auth_user table by default must
have unique usernames. Username is what Django authenticates to by default.
Jaydeep was able to enter the initial user with email, firstname and
lastname once because he left 'username' field blank. The second time
failed because there is already a blank 'username' causing it to throw the
Unique Constraint error.
Also, as this code is written the 'userprofileinfo' table is not getting
populated with any data.
On Tuesday, June 4, 2019 at 8:24:30 AM UTC-5, Flexian_me wrote:
>
> Consider we want another attribute in user model other than what is
> already available, for example height or weight. Still this code is giving
> error and focus should be to solve the issue that OP is facing. I am also
> facing same issue and trying to figure it out.
> @Jaydeep Did you get to solve the issue somehow?
>
> Thanks!
>
> On Saturday, 18 May 2019 04:01:56 UTC+5:30, Joe Reitman wrote:
>>
>> I'm not sure what your objective is but you don't need to create another
>> model to store user data. User data is stored in the auth.models. It has
>> fields already available for what your trying to accomplish.
>>
>> On Saturday, October 6, 2018 at 8:28:09 AM UTC-5, Jaydeep Borkar wrote:
>>>
>>> When I try to register a user using Django form, it gives me "UNIQUE
>>> constraint failed: auth_user.username". When I tried registering the first
>>> user, it worked, but I couldn't see that entry in my database. When I tried
>>> registering the second user, it's giving me this error. Please, help me
>>> through this. I have spent a considerable amount of time on this and I'm
>>> stuck.
>>>
>>> This is my code:
>>>
>>> forms.py
>>> from django import forms
>>> from django.contrib.auth.models import User
>>> from volunteer.models import UserProfileInfo
>>>
>>> class UserForm(forms.ModelForm):
>>>
>>> class Meta():
>>> model = User
>>> fields = ('email','first_name','last_name')
>>>
>>>
>>>
>>>
>>> views.py
>>> from django.shortcuts import render
>>> from volunteer.forms import UserForm
>>>
>>>
>>>
>>> def register(request):
>>>
>>> registered = False
>>>
>>> if request.method =="POST" :
>>> user_form = UserForm(data=request.POST)
>>>
>>> if user_form.is_valid():
>>>
>>> user = user_form.save()
>>> user.save()
>>>
>>> registered = True
>>>
>>> else:
>>> print(user_form.errors)
>>>
>>> else:
>>> user_form = UserForm()
>>>
>>> return render(request, 'volunteer/volunteer.html',
>>> {'user_form':user_form,
>>> 'registered':registered})
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> models.py
>>> from django.db import models
>>> from django.contrib.auth.models import User
>>>
>>> class UserProfileInfo(models.Model):
>>>
>>> user=models.OneToOneField(User)
>>>
>>> def __str__(self):
>>> return self.user.first_name
>>> return self.user.last_name
>>> return self.user.email
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> urls.py
>>> from django.conf.urls import url
>>>
>>> from . import views
>>>
>>> app_name = 'volunteer'
>>>
>>> urlpatterns = [
>>>
>>> url(r'^', views.register, name='register'),
>>> ]
>>>
>>>
>>>
>>> admin.py
>>> from django.contrib import admin
>>> from volunteer.models import UserProfileInfo
>>>
>>> # Register your models here.
>>> admin.site.register(UserProfileInfo)
>>>
>>>
>>>
>>> volunteer.html file which has the user form
>>> <!DOCTYPE html>
>>> <html lang="en">
>>> <head>
>>> <meta charset="UTF-8">
>>>
>>>
>>> <meta name="viewport" content = "width=device-width, initial-scale=1.0">
>>>
>>>
>>> <link rel="stylesheet" href="
>>> https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css";>
>>> <script src="
>>> https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js
>>> "></script>
>>> <script src="
>>> https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js
>>> "></script>
>>> <script src="
>>> https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js
>>> "></script>
>>>
>>> </head>
>>>
>>> <body>
>>>
>>> <div class="jumbotron">
>>> {% if registered %}
>>> <h1>Thanks!</h1>
>>> {% else %}
>>> <h1>Register</h1>
>>>
>>>
>>> <form method="post">
>>> {% csrf_token %}
>>> {{ user_form.as_p }}
>>> <input type="submit" name="" value="Register">
>>>
>>> {% endif %}
>>>
>>> </div>
>>>
>>>
>>> </form>
>>>
>>> </body>
>>> </html>
>>>
>>>
>>>
>>> I feel there's some problem in views.py or models.py, or volunteer.html.
>>> or maybe something else. Please, guide me through this.
>>> Thanks in advance.
>>>
>>
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