Скачать или смотреть Understanding When and Why to Use create_user in a Custom Django User Manager

Learn the purpose of Django's custom user manager method `create_user`, when to use it, and why it's essential even when using built-in Django forms.
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This video is based on the question https://stackoverflow.com/q/79441636/ asked by the user 'PPIN' ( https://stackoverflow.com/u/24953540/ ) and on the answer https://stackoverflow.com/a/79441792/ provided by the user 'Wale Olokunola' ( https://stackoverflow.com/u/12486001/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Introduction

When customizing a Django user model, many developers wonder about the role of the custom user manager's create_user method, especially since the default user creation forms might not seem to use it directly. This post clarifies why you need a custom user manager, when create_user gets executed, and how to properly integrate it into your workflow.



Why Create a Custom User Manager?

Django’s default user manager expects a username. If you use email (or other fields) as the unique identifier, the default manager’s methods won’t handle this properly.

Custom fields require custom management. Your create_user method ensures that required fields (like email, birth_date, etc.) are validated and normalized.

Superuser creation needs special handling. The create_superuser method sets appropriate flags (like is_staff and is_superuser) when creating admin accounts.

Even if you use Django’s built-in UserCreationForm, which by default does not call your manager’s methods, the manager is still crucial for programmatic user creation.



When to Use create_user

Manual user creation: When you create users in views, management commands, scripts, or APIs, you should call create_user to properly set up the user.

Overriding forms: Django’s UserCreationForm does not automatically use your custom manager’s create_user. To integrate:

Override the form’s save() method to call your manager’s create_user.

Or bypass the form and create users directly using your manager.

Example override:

[[See Video to Reveal this Text or Code Snippet]]

Or create users programmatically:

[[See Video to Reveal this Text or Code Snippet]]



Summary

Your custom user manager’s create_user method is essential for handling user creation with custom fields.

Built-in forms like UserCreationForm do not use it by default; override the forms or call it directly.

Use create_user whenever users are created outside of Django’s default forms—for correctness and consistency.

Understanding this flow ensures your authentication system works reliably when using custom user models.