How to implement custom authorization logic in Xano?

Discover how to easily boost your API's security by following this comprehensive guide to implementing custom authorization logic in Xano. Dive in step by step, and make your API watertight.

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Overview

Implementing custom authorization logic in Xano lets developers tap into its powerful API-first backend to lock down endpoints and manage who gets to do what. Customizing how users log in, setting up middleware, and taking full advantage of Xano's scripting environment ensure tailored access controls that fit your app's specific requirements. This not only bolsters security but also makes sure users have the right permissions depending on their roles or other factors. By getting to know the key parts of Xano’s security features, you can smoothly roll out your custom authorization logic.

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How to implement custom authorization logic in Xano?

Access Xano Dashboard

Log in to your Xano account.
Head over to the Dashboard where your projects are listed.

Create a New API Endpoint

Click on the "API" section on the left sidebar.
Pick the API group where you want to add the custom authorization.
Click "Add Endpoint" to create a new API endpoint.

Define Endpoint Configuration

Give your endpoint a name, URL, and choose the HTTP method.
Click "Next" to move on to the Function Stack.

Add Logic to Function Stack

Click "Add Function" within the Function Stack.
Choose "Condition" from the list to add a conditional function.
Define the control flow based on your custom authorization logic, like checking user roles or permissions.

Use Variables for Dynamic Checks

Extract needed variables using the "Extract" function before the conditional logic.
Use these variables in your conditions to dynamically manage the authorization.

Implement Conditional Logic

Configure the "Condition" function with your specific logic.
Example: if user_role != "admin" then return 403
Add a "Code" function inside the condition to return a specific HTTP status code like 403 Forbidden for unauthorized access.

Fetch User Information

Add a "Database Request" function before the conditional logic.
Query the user table to fetch user roles or permissions based on user ID or token.

Apply Authorization Logic

Within the conditional block, add "Database Request" or "API Request" functions as needed.
Retrieve additional required data to complete the custom authorization check.

Set Response Based on Authorization

Apply different response functions inside and outside the conditional logic blocks.
Use the "Set Response" function to return appropriate messages and status codes.

Test the Endpoint

Save the endpoint after finishing the configuration.
Use Xano's built-in API testing tools to check if the custom authorization logic works as expected.
Send test requests with different credentials or tokens to make sure all scenarios are covered.

Deploy and Monitor

Deploy the endpoint once testing confirms it’s working correctly.
Monitor logs and endpoint activity to ensure the custom authorization logic works in a live environment.

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