Learn-API-Auth-Pre-Req-Script

Description

This collection is configured to automatically fetch the bearer token and set the Authorization header for every request made within it by using Pre-Request script.

Installation

Postman

Postman is a collaboration platform for API development. It simplifies each step of building an API and streamlines collaboration, enabling you to create better APIs faster.

To install Postman, follow these steps:

1. Visit the Postman website.
2. Download the version suitable for your platform.
3. Run the installer.

Pre-Request Script

Import the file Learn-API-Auth-Pre-Req-Script.postman_collection.json. Go to the Script -> Pre-req section, you can be able to locate the code to fetch the Bearer Token.

You can always use the below script or customize the same based on your need.

const crypto = require('crypto-js');
const tokenUrl = "https://" + pm.variables.get("domain") + "/learn/api/public/v1/oauth2/token";
const username = pm.variables.get("username");
const password = pm.variables.get("password");

// form data urlencoded
var formBody = [
    encodeURIComponent("grant_type") + '=' + encodeURIComponent("client_credentials")
];

var requestBase = {
    url: tokenUrl,
    method: 'POST',
    header: "Authorization:Basic " + crypto.enc.Base64.stringify(crypto.enc.Utf8.parse(username + ':' + password)),
    body: {
        mode: 'urlencoded',
        urlencoded: formBody
    }
};

// send request and set the token environment variable
pm.sendRequest(requestBase, function (err, response) {
    console.log(response); // Log the response to the Postman console

    if (!err) {
        // Extracting the access_token from the response
        var responseData = response.json();
        var token = responseData.access_token;

        // Set the extracted value as an environment variable
        pm.variables.set("token", token);
    }
});

Usage

After importing the Learn-API-Auth-Pre-Req-Script.postman_collection.json file into Postman, you can use the APIs by sending requests to them. Ensure to set up the environment variables correctly:

• $LEARN_DOMAIN: Learn Server FQDN
• $APP_KEY: Your application key here
• $APP_SECRET: Your application secret here