Table of Contents
Learn what extensions your platform supports
Pay attention to verification and permission control when adding fields
Front-end display and form integration are also critical
Home CMS Tutorial WordPress How to add custom fields to users

How to add custom fields to users

Jul 06, 2025 am 12:18 AM

To add custom user fields, you need to select the extension method according to the platform and pay attention to data verification and permission control. Common practices include: 1. Use additional database tables or key values ​​to store information on the structure; 2. Add input boxes to the front end and integrate with the back end; 3. Constrain format checks and access permissions for sensitive data; 4. Update interfaces and templates to support new field display and editing, while taking into account mobile adaptation and user experience.

Sometimes, the default user information field is not enough. For example, you may need to record the user's mobile phone number, address, or some personalized settings. At this time, you have to add a few custom fields to the system. The implementation method varies from platform to platform, but the general idea is similar.

Learn what extensions your platform supports

Different systems support different levels of custom fields. For example, WordPress has user metadata, which Django can be implemented by extending the User model, while Laravel provides a special "migration" mechanism.
If you are using a ready-made CMS or framework, check whether there are any instructions for "custom user fields" or "user profile extensions" in the official documentation. Some platforms also provide plug-ins or modules, such as WordPress's Advanced Custom Fields (ACF) plug-in, which can easily add user fields.
Common practices include:

  • Use additional tables or fields to store custom information
  • Save extended data using key-value pair structures (such as user_meta)
  • Add an input box to add a new field to the front-end interface

Pay attention to verification and permission control when adding fields

Just adding fields is not enough, you also have to make sure that the data is saved correctly and only visible or modified by the right person. For example, for sensitive information such as mobile phone numbers, it is best to do format verification (such as whether it is an 11-digit number), and also consider who can see this field - administrators can see it, ordinary users can only edit their own.
For example, if you are adding a phone number field in WordPress, you can check whether it is empty or the format is correct when saving:

 update_user_meta($user_id, 'phone_number', sanitize_text_field($_POST['phone_number']));

At the same time, you should also pay attention to permission judgment when displaying:

 if (current_user_can('manage_options')) {
    echo get_user_meta($user_id, 'phone_number', true);
}

This can avoid information leakage.

Front-end display and form integration are also critical

After adding fields, if they cannot be displayed on the page, it means that there is no addition. Common usage scenarios include user profile pages, background management interfaces, or registration/editing forms. You need to call the data of these fields in the corresponding template file or component.
For example, adding a "nickname" field to the registration page, in addition to back-end processing, the front-end also needs to add an input element:

 <label for="nickname">Nickname:</label>
<input type="text" name="nickname" id="nickname" />

Then capture and save in the commit logic. If it is a front-end and back-end separation architecture, remember that the interface must also update the field structure simultaneously.
In addition, don’t forget to consider issues such as mobile adaptation and form verification prompts, otherwise the user experience will be discounted.

Basically that's it. It doesn't seem complicated, but it is easy to ignore details when actually operating, such as field type, data security, compatibility, etc. Take your time and test step by step, there is no big problem.

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