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Firebase Auth & Realtime Database Apps · 课时

Facebook 与 GitHub 身份验证

将 Facebook 和 GitHub 添加为身份验证提供商，并配置应用和 Firebase 以支持社交账号登录

Facebook 与 GitHub 身份验证 是 CoddyKit 上的免费 Firebase Auth & Realtime Database Apps 课时。 这是第 2 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 Firebase Auth & Realtime Database Apps 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Firebase Auth & Realtime Database Apps 课程共包含 4 节课。

本课时的部分内容尚未翻译，以英文显示。

Social Logins: Facebook & GitHub

Welcome! In this lesson, we'll dive into integrating two popular social login options: Facebook and GitHub.

Using social providers like these can significantly improve the user experience by offering quick, familiar sign-up and login methods.

Why Offer Social Logins?

Social logins provide a seamless experience for your users. Here's why they're great:

  • Convenience: Users can sign in with accounts they already have.
  • Reduced Friction: No need to create new usernames or passwords.
  • Trust: Users often feel more secure using established platforms.
  • Faster Onboarding: Quick access to your app's features.

Facebook App Setup: Developer Console

Before enabling Facebook login in Firebase, you need to create an app on the Facebook for Developers platform.

  • Go to developers.facebook.com and create a new app.
  • Choose the 'Consumer' type for typical user authentication.
  • Note down your App ID and App Secret; you'll need them for Firebase.

Facebook Login Product Configuration

After creating your Facebook app, you must configure the 'Facebook Login' product:

  • In your Facebook App Dashboard, add the 'Facebook Login' product.
  • Under 'Settings' for Facebook Login, ensure 'Web OAuth Login' is enabled.
  • Add your Firebase OAuth redirect URI (found in Firebase Auth settings) to 'Valid OAuth Redirect URIs'. This is crucial for security.

Firebase Console: Enable Facebook

Now, let's enable Facebook as an authentication provider in Firebase:

  1. Navigate to the Authentication section in your Firebase project console.
  2. Go to the 'Sign-in method' tab.
  3. Click 'Add new provider' and select Facebook.
  4. Paste your Facebook App ID and App Secret into the fields provided.
  5. Make sure to enable the provider and save your changes!

Code: Facebook Sign-In

Once configured, you can use the Firebase SDK to sign in users with Facebook. This JavaScript example shows the core logic, typically triggered by a button.

/* This is a conceptual example for web/JS.
   Firebase SDK must be initialized before use. */

// 1. Get Auth instance & Facebook provider
const auth = firebase.auth();
const provider = new firebase.auth.FacebookAuthProvider();

// 2. Define the sign-in function
function signInWithFacebook() {
  console.log("Attempting Facebook sign-in...");
  auth.signInWithPopup(provider)
    .then((result) => {
      // User successfully signed in
      const user = result.user;
      console.log("Logged in as:", user.displayName);
    })
    .catch((error) => {
      // Handle errors (e.g., user cancelled, network error)
      console.error("Facebook login failed:", error.message);
    });
}

// Call the function (in a real app, this is a button click)
signInWithFacebook();

GitHub App Setup: Developer Console

Integrating GitHub is similar to Facebook. First, you need to create an OAuth App on GitHub:

  • Go to github.com/settings/developers.
  • Click 'New OAuth App'.
  • Fill in the 'Application name', 'Homepage URL'.
  • For 'Authorization callback URL', use your Firebase OAuth redirect URI.
  • Click 'Register application' and note your Client ID and Client Secret.

Firebase Console: Enable GitHub

Next, enable GitHub as an authentication provider in your Firebase project:

  1. In the Firebase console, go to Authentication > Sign-in method.
  2. Click 'Add new provider' and select GitHub.
  3. Paste your GitHub Client ID and Client Secret into the respective fields.
  4. Enable the provider and save your changes.

The Firebase OAuth redirect URI for GitHub will be displayed here, ensure it matches what you entered on GitHub.

Code: GitHub Sign-In

Just like Facebook, once GitHub is configured, you can use the Firebase SDK to sign in users. This JavaScript snippet illustrates the process.

/* This is a conceptual example for web/JS.
   Firebase SDK must be initialized before use. */

// 1. Get Auth instance & GitHub provider
const auth = firebase.auth();
const provider = new firebase.auth.GithubAuthProvider();

// 2. Define the sign-in function
function signInWithGitHub() {
  console.log("Attempting GitHub sign-in...");
  auth.signInWithPopup(provider)
    .then((result) => {
      // User successfully signed in
      const user = result.user;
      console.log("Logged in as:", user.displayName);
    })
    .catch((error) => {
      // Handle errors (e.g., user cancelled, network error)
      console.error("GitHub login failed:", error.message);
    });
}

// Call the function (in a real app, this is a button click)
signInWithGitHub();

Quick Check: Social Login Setup

You've learned the steps to integrate social logins. Which of these are essential for setting up a new social authentication provider (like Facebook or GitHub) with Firebase?

Recap: Facebook & GitHub Auth

Great job! In this lesson, you learned how to add Facebook and GitHub authentication to your Firebase project.

  • We covered creating developer apps on each platform.
  • You saw how to configure the necessary settings, including OAuth redirect URIs.
  • Finally, we enabled these providers in the Firebase console and looked at conceptual code for signing users in.

Social logins simplify user onboarding and enhance your app's accessibility!

常见问题解答

「Facebook 与 GitHub 身份验证」课时是免费的吗？

是的 — 「Facebook 与 GitHub 身份验证」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Firebase Auth & Realtime Database Apps 课程的其余内容，请升级到 CoddyKit PRO。 Firebase Auth & Realtime Database Apps 课程共包含 4 节课。

「Facebook 与 GitHub 身份验证」这节课中我会学到什么？

将 Facebook 和 GitHub 添加为身份验证提供商，并配置应用和 Firebase 以支持社交账号登录 你通过在浏览器中直接运行的动手代码来练习 Firebase Auth & Realtime Database Apps，全天候 AI 导师会在你学习这节课的过程中回答你的问题。

学习 Firebase Auth & Realtime Database Apps 需要有经验吗？

无需任何先前经验。CoddyKit 上的 Firebase Auth & Realtime Database Apps 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 2 节课，共 4 节。

「Facebook 与 GitHub 身份验证」课时需要多长时间？

大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。

我能在这节 Firebase Auth & Realtime Database Apps 课中编写并运行代码吗？

能。每节 Firebase Auth & Realtime Database Apps 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。

此课程中的所有课时

  1. 集成 Google 登录
  2. Facebook 与 GitHub 身份验证
  3. 匿名与自定义身份验证
  4. 集成 Apple 登录
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