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Auth0 - customize the login process with “Rules”
Auth0 rules provide an easy way to extend Auth0's login process to meet specific needs. You can create custom rules using templates and customize them as necessary to enhance your application's authentication and authorization processes.
Auth0 rules provide an easy way to extend Auth0's login process to meet specific needs. You can create custom rules using templates and customize them as necessary to enhance your application's authentication and authorization processes.
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Rules are JavaScript code snippets that run on Auth0 servers and can be customized to handle specific requirements.

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Rules can perform various actions, such as limiting logins based on geographic location or adding additional information to a user's profile.

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To create Custom Rules, access the Auth0 dashboard and navigate to the "Rules" section.

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<p>Click on the &quot;Create Your First Rule&quot; button.</p>

Click on the "Create Your First Rule" button.

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Choose a rule template. You can either create a rule from scratch or choose from existing templates. In this example, select the "Set Roles to a User" template under the "Access Control" heading.

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Rules are functions that receive three parameters:

  • User object (from the identity provider).
  • Context object (contains information about the login attempt).
  • Callback function (used to indicate success or error).
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Customizing the Rule:

  • Modify the template's code to meet your specific requirements.
  • In the example, the code checks the user's email address and assigns roles based on it.
  • You can customize the logic to query databases or make API calls as needed.
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You can manually test the rule by clicking the "Try This Rule" button.

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Before running the rule, you can modify the user and context objects for testing purposes and click “Try” button. After a successful login, the assigned roles are available in the user's profile provided by Auth0. You can access this data in your application.