触发Firebase函数更新文档字段值

onUpdate 字段值,而不是整个文档。

有没有可能使用 firebase-functions lastUpdate ? 或者,我倾向于 HTTP 触发器通过调用 onClick axios 但找不到任何有助于我理解的资源、文档或教程。如果你知道的话,我很想看看。

const functions = require('firebase-functions');
const admin = require('firebase-admin');
const sgMail = require('@sendgrid/mail');

try {
  admin.initializeApp();
} catch (e) {
  console.log(e);
}

var SENDGRID_API_KEY = functions.config().sendgrid.key;
sgMail.setApiKey(SENDGRID_API_KEY);

exports = module.exports = functions.firestore
  .document('users/{id}')
  .onUpdate(snap => {
    const user = snap.data();
    const msg = {
      to: user.email,
      from: 'example@example.com',
      templateId: 'd-6c0e0385808c480ab475748a6eeed773',
      dynamic_template_data: {
        firstName: user.firstName,
        email: user.email,
        id: user.id
      }
    };
    return sgMail.send(msg).catch(err => console.log(`${user.email} - ${err}`));
  });