Achievers for Developers

Step 4: Saving as a cookie

When you get back the access token from the API, you then need to parse it from the URL and save it as a cookie. Once it's saved by the pop-up window, you need to close that window and reload the original window.

At the top of Login.js add the following import statements:

+import queryString from 'query-string';
+import cookie from 'react-cookies';

Add the following to the constructor:

constructor(props) {
     super(props);

+    const {
+      access_token: accessToken, expires_in: expiresIn, state
+    } = queryString.parse(window.location.hash.substring(1));
+
+    if ((accessToken && expiresIn && state) && state === cookie.load('state')) {
+      cookie.save('accessToken', accessToken, { path: '/' });
+      cookie.save('expiresIn', expiresIn, { path: '/' });
+
+      window.opener.location.reload();
+      window.close();
+    }

     this.onLoginClick = this.onLoginClick.bind(this);
   }

Add the following to the constructor of App.js:

constructor(props) {
     super(props);
+    this.state = {
+      accessToken: cookie.load('accessToken'),
+      expiresIn: cookie.load('expiresIn'),
+    };
   }

And update the render method as follows:

render() {
+    const { accessToken } = this.state;

+    if (accessToken) {
+      return <div>{accessToken}</div>;
+    } 
     return <Login />;
   }

Now when your app reloads you should see your access token displayed on the page. With an actual token, we can start making some API requests. First, take a quick detour to create the components that will be displayed when you're logged in.

Updated about a year ago


Step 4: Saving as a cookie


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