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[Solved] AttributeError: ‘Manager’ object has no attribute ‘get_by_natural_key’ error in Django?

Hello Guys, How are you all? Hope You all Are Fine. Today I get the following error AttributeError: ‘Manager’ object has no attribute ‘get_by_natural_key’ error in Django? in python. So Here I am Explain to you all the possible solutions here.

Without wasting your time, Let’s start This Article to Solve This Error.

How AttributeError: ‘Manager’ object has no attribute ‘get_by_natural_key’ error in Django Error Occurs?

Today I get the following error AttributeError: ‘Manager’ object has no attribute ‘get_by_natural_key’ error in Django? in python.

How To Solve AttributeError: ‘Manager’ object has no attribute ‘get_by_natural_key’ error in Django Error ?

  1. How To Solve AttributeError: 'Manager' object has no attribute 'get_by_natural_key' error in Django Error ?

    To Solve AttributeError: 'Manager' object has no attribute 'get_by_natural_key' error in Django Error In short, if your model uses the same username and email fields as Django's User model then you can write:

  2. AttributeError: 'Manager' object has no attribute 'get_by_natural_key' error in Django?

    To Solve AttributeError: 'Manager' object has no attribute 'get_by_natural_key' error in Django Error In short, if your model uses the same username and email fields as Django's User model then you can write:

Solution 1


You have created a new user model but you have not yet specified a manager for that model. If you’re not yet familiar with managers in Django I suggest reading the documentation on that first. As the Django 1.5 say (source):

You should also define a custom manager for your User model. If your User model defines username and email fields the same as Django’s default User, you can just install Django’s UserManager; however, if your User model defines different fields, you will need to define a custom manager that extends BaseUserManager providing two additional methods: create_user() and create_superuser().

In short, if your model uses the same username and email fields as Django’s User model then you can write:

from django.contrib.auth.models import UserManager

class GalaxyUser(models.Model):
    id = models.IntegerField(primary_key=True)
    create_time = models.DateTimeField(null=True, blank=True)
    update_time = models.DateTimeField(null=True, blank=True)
    email = models.CharField(max_length=765)
    password = models.CharField(max_length=120)
    external = models.IntegerField(null=True, blank=True)
    deleted = models.IntegerField(null=True, blank=True)
    purged = models.IntegerField(null=True, blank=True)
    username = models.CharField(max_length=765, blank=True)
    form_values_id = models.IntegerField(null=True, blank=True)
    disk_usage = models.DecimalField(null=True, max_digits=16, decimal_places=0, blank=True)

    objects = UserManager()

    class Meta:
        db_table = u'galaxy_user'

Alternatively, you’ll need to subclass BaseUserManager (also in django.contrib.auth.models) and implement the desired methods. Then, you’ll need to assign it to the objects variable for your model.

Summery

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