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Create a clone of a django model instance.

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Creating copies of a model instance with explicit control on how the instance should be duplicated (limiting fields or related objects) copied and unique field detection.

Table of contents



$ pip install django-clone


from django.db import models
from django.utils.translation import gettext_lazy as _
from model_clone import CloneMixin

class TestModel(CloneMixin, models.Model):
    title = models.CharField(max_length=200)
    tags =  models.ManyToManyField('Tags')

    _clone_many_to_many_fields = ['tags']

class Tags(models.Model):
    name = models.CharField(max_length=255)

    def __str__(self):
        return _(

Duplicating a model instance

In [1]: test_obj = TestModel.objects.create(title='New')

In [2]:
Out[2]: 1

In [3]: test_obj.title
Out[3]: 'New'

In [4]: test_obj.tags.create(name='men')

In [4]: test_obj.tags.create(name='women')

In [5]: test_obj.tags.all()
Out[5]: <QuerySet [<Tag: men>, <Tag: women>]>

In [6]: clone = test_obj.make_clone(attrs={'title': 'Updated title'})

In [7]:
Out[7]: 2

In [8]: clone.title
Out[8]: 'Updated title'

In [9]: clone.tags.all()
Out[9]: <QuerySet [<Tag: men>, <Tag: women>]>

CloneMixin attributes

Field Names Description
_clone_model_fields Restrict the list of fields to copy from the instance (By default: Copies all fields excluding auto-created/non editable model fields)
_clone_many_to_many_fields Restricted Many to many fields (i.e Test.tags)
_clone_many_to_one_or_one_to_many_fields Restricted Many to One/One to Many fields
_clone_one_to_one_fields Restricted One to One fields
Field Names (include all except these fields.) Description
_clone_excluded_model_fields Excluded model fields.
_clone_excluded_many_to_many_fields Excluded many to many fields.
_clone_excluded_many_to_one_or_one_to_many_fields Excluded Many to One/One to Many fields.
_clone_excluded_one_to_one_fields Excluded one to one fields.

:warning: NOTE: Ensure to either set _clone_excluded_* or _clone_*. Using both would raise errors.

Creating clones without subclassing CloneMixin.

In [1]: from model_clone.utils import create_copy_of_instance

In [2]: test_obj = TestModel.objects.create(title='New')

In [3]:
Out[3]: 1

In [4]: test_obj.title
Out[4]: 'New'

In [5]: test_obj.tags.create(name='men')

In [6]: test_obj.tags.create(name='women')

In [7]: test_obj.tags.all()
Out[7]: <QuerySet [<Tag: men>, <Tag: women>]>

In [8]: clone = create_copy_of_instance(test_obj, attrs={'title': 'Updated title'})

In [9]:
Out[9]: 2

In [10]: clone.title
Out[10]: 'Updated title'

In [11]: clone.tags.all()
Out[11]: <QuerySet []>

:warning: NOTE:

  • This method won't copy over related objects like Many to Many/One to Many relationships.
  • Ensure that required fields skipped from being cloned are passed in using the attrs dictionary.

Duplicating Models from Django Admin view.


from django.contrib import admin
from django.contrib.admin import ModelAdmin

class TestModelAdmin(ModelAdmin):


from model_clone import CloneModelAdmin

class TestModelAdmin(CloneModelAdmin):

List View


Change View


from model_clone import CloneModelAdmin

class TestModelAdmin(CloneModelAdmin):
    # Enables/Disables the Duplicate action in the List view (Defaults to True)
    include_duplicate_action = True
    # Enables/Disables the Duplicate action in the Change view (Defaults to True)
    include_duplicate_object_link = True

:warning: NOTE: Ensure that model_clone is placed before django.contrib.admin


Found a Bug?

To file a bug or submit a patch, please head over to django-clone on github.

Contributors ✨

Thanks goes to these wonderful people:

Gerben Neven

🐛 ⚠️ 💻

Sebastian Kapunkt

💻 🐛 ⚠️

Andrés Portillo


WhiteSource Renovate



💻 🐛 ⚠️

This project follows the all-contributors specification. Contributions of any kind welcome!

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