CODEWITHSUNDEEP
pythondjangodjango-admin
Lahiruzz
Lahiruzz

Reputation: 665

Troubleshooting 'can only concatenate tuple (not "str") to tuple' error

when I try to extend the django admin user. I got the following error.

can only concatenate tuple (not "str") to tuple

this is my models.py class

from django.db import models
from django.contrib.auth.models import User
from django.db.models.signals import post_save

User.add_to_class('age', models.BooleanField(default=False))

class Employee(models.Model):

  user=models.OneToOneField(User)
  name=models.CharField(max_length=100)
  address=models.CharField(max_length=200)
  designation=models.CharField(max_length=100)
  email=models.CharField(max_length=100)    
  role=models.CharField(max_length=10)  
  project=models.CharField(max_length=50)
  task=models.CharField(max_length=50)
  avatar = models.ImageField("Profile Pic", upload_to="images/", blank=True, null=True)



def __unicode__(self):

    return self.name


def ensure_profile_exists(sender, **kwargs):
if kwargs.get('created', False):
    Employee.objects.create(user=kwargs.get('instance'))

post_save.connect(ensure_profile_exists, sender=User)

this is my admin.py file

from django.contrib.auth.admin import UserAdmin
 UserAdmin.list_display += ('age')
 UserAdmin.list_filter += ('age')
 UserAdmin.fieldsets += ('age',)

I need to add one filed called age to the django admin user, for example first name ,last name ,email and age in personal info. please someone help me.

Upvotes: 1

Views: 6038

Answers (1)

Rohan
Rohan

Reputation: 53336

Change these lines to have comma after 'age'

UserAdmin.list_display += ('age')
UserAdmin.list_filter += ('age')

as 

UserAdmin.list_display += ('age',)
UserAdmin.list_filter += ('age',)

Otherwise python evaluates ('age') to 'age' rather than tupple.

You have done this appropriately in third line UserAdmin.fieldsets += ('age',)

Upvotes: 3

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