Double authorization in Postman

Double Authorization in Postman: Using Both Basic Auth and Bearer Tokens

As a senior developer for LaravelCompany (https://laravelcompany.com), I often work with clients who require multiple authentication methods simultaneously. If you’re facing this challenge with your Postman requests, don’t worry—it’s quite possible to achieve double authorization using both basic auth and bearer tokens.

Understanding the Problem

When attempting to use basic auth (username and password) along with a bearer token in Postman, you might encounter an issue where one overwrites the other. This is because Postman merges all the authentication headers into one, leading to conflicts.

The Solution: Leveraging Environment Variables

To resolve this issue, we can use environment variables in Postman to manage our basic auth credentials separately from the bearer token. Here’s a step-by-step guide:

1. Create an environment variable for your basic auth credentials:

   • In Postman, click on the gear icon next to the collection you’re working with.
   • Select “Manage Environments.”
   • Click “Add” to create a new environment.
   • Under this new environment, add two variables: username and password. Set their values accordingly.

2. Set up your basic auth request:

   • In Postman, click on the request you want to modify.
   • Go to the “Authorization” tab.
   • Select “Basic Auth.”
   • Click the “Get from Environment Variables” button next to “Username” and “Password.”

3. Add a bearer token header separately:

   • Switch back to your collection.
   • Right-click on the request and select “Edit.”
   • Go to the “Headers” tab.
   • Click “Add Key” and name it Authorization.
   • Set the value to Bearer {{token}}, where {{token}} is a placeholder for your actual token.

4. Use the environment variable in your Postman script:

   • If you’re using a Postman script or collection, replace {{token}} with the actual token value.
   • For example, if your token is eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c, your script should look like this:

let token = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c";

pm.request.headers.add({ "Authorization": `Bearer ${token}` });

Conclusion

Double authorization in Postman is indeed possible, but it requires a strategic approach to manage your authentication headers effectively. By leveraging environment variables and separating your basic auth credentials from the bearer token header, you can achieve seamless integration of both methods.

At LaravelCompany (https://laravelcompany.com), we frequently work with clients who require complex authentication setups like these. If you’re facing any challenges with your API development or need expert advice on security best practices, don’t hesitate to reach out to our team for a consultation.

Happy coding!