如何在Firebase实时数据库中创建新密钥时获取电子邮件

Question

好吧，我几乎到处都找过了，显然有Firebase云函数，每当在我的数据库中创建新密钥时，它都可以用来向我发送电子邮件。然而，我无法理解从哪里开始以及如何做。有人能帮我吗。

Answer 1

每次在数据库中创建新节点(即新密钥(时，您确实可以使用云函数发送电子邮件。

看看这里的实时数据库触发器文档，看看这里的一个官方云函数示例，它显示了如何发送电子邮件。

在示例中，发送电子邮件是为了响应用户帐户的创建和删除，但将示例代码与实时数据库触发器集成起来并不困难。

例如，您可以根据示例执行以下操作：

const functions = require('firebase-functions');
const nodemailer = require('nodemailer');
// Configure the email transport using the default SMTP transport and a GMail account.
// For Gmail, enable these:
// 1. https://www.google.com/settings/security/lesssecureapps
// 2. https://accounts.google.com/DisplayUnlockCaptcha
// For other types of transports such as Sendgrid see https://nodemailer.com/transports/
// TODO: Configure the `gmail.email` and `gmail.password` Google Cloud environment variables.
const gmailEmail = functions.config().gmail.email;
const gmailPassword = functions.config().gmail.password;
const mailTransport = nodemailer.createTransport({
service: 'gmail',
auth: {
user: gmailEmail,
pass: gmailPassword,
},
});
// Your company name to include in the emails
// TODO: Change this to your app or company name to customize the email sent.
const APP_NAME = 'xxxxxx';
exports.sendWelcomeEmail = functions.database.ref('/thePathYouWant/{pushId}')
.onCreate((snapshot, context) => {
const createdData = snapshot.val(); // data that was created
const email = createdData.email; // The email of the user. We make the assumption that it is written at the new database node
const displayName = createdData.displayName; // The display name of the user.
return sendWelcomeEmail(email, displayName);
});
// Sends a welcome email to the given user.
async function sendWelcomeEmail(email, displayName) {
const mailOptions = {
from: `${APP_NAME} <[e-mail]>`,
to: email,
};
// The user subscribed to the newsletter.
mailOptions.subject = `Welcome to ${APP_NAME}!`;
mailOptions.text = `Hey ${displayName || ''}! Welcome to ${APP_NAME}. I hope you will enjoy our service.`;
await mailTransport.sendMail(mailOptions);
return console.log('New welcome email sent to:', email);
}

如果你对Firebase的云功能完全陌生，那么在这里学习教程并观看官方视频系列可能是个好主意。