【问题标题】:Firebase Cloud function in expo project世博项目中的 Firebase Cloud 功能
【发布时间】:2021-02-27 14:50:16
【问题描述】:

所以我有一个云功能(这还没有在 react native app 目录中):

const admin = require('firebase-admin');
const firebase_tools = require('firebase-tools');
const functions = require('firebase-functions');

admin.initializeApp();


exports.deleteUser = functions
  .runWith({
    timeoutSeconds: 540,
    memory: '2GB'
  })
  .https.onCall((data, context) => {

  const userId = context.auth.uid;
  var promises = [];

  // DELETE DATA
  var paths = ['users/' + userId, 'messages/' + userId, 'chat/' + userId];

  paths.forEach((path) => {
    promises.push(
      recursiveDelete(path).then(  () => {
          return 'success';
        }
      ).catch( (error) => {
        console.log('Error deleting user data: ', error);
      })
    );
  });

  // DELETE FILES
  const bucket = admin.storage().bucket();
  var image_paths = ["avatar/" + userId, "avatar2/" + userId, "avatar3/" + userId];
  image_paths.forEach((path) => {
    promises.push(
      bucket.file(path).delete().then(  () => {
            return 'success';
          }
        ).catch( (error) => {
          console.log('Error deleting user data: ', error);
        })
      );
    });

  // DELETE USER
  promises.push(
    admin.auth().deleteUser(userId)
    .then( () => {
      console.log('Successfully deleted user');
      return true;
    })
    .catch((error) => {
      console.log('Error deleting user:', error);
    })
  );

  return Promise.all(promises).then(() => {
    return true;
  }).catch(er => {
      console.error('...', er);
  });
});




function recursiveDelete(path, context) {
    return firebase_tools.firestore
    .delete(path, {
      project: process.env.GCLOUD_PROJECT,
      recursive: true,
      yes: true,
      token: functions.config().fb.token
    })
    .then(() => {

      return {
        path: path
      }
    }).catch( (error) => {
      console.log('error: ', error);
      return error;
    });
  }
  // [END recursive_delete_function]

这用于我的 swift 应用程序。如何将它用于使用 Expo 构建的 react 本机应用程序?

我已经安装了以下yarn add @react-native-firebase/functions

我在根目录中设置了我的 firebase.js 文件:

import * as firebase from "firebase";

// Your web app's Firebase configuration
var firebaseConfig = {
    apiKey: "test",
    authDomain: "test",
    databaseURL: "test",
    projectId: "test",
    storageBucket: "test",
    messagingSenderId: "test",
    appId: "test"
  };

// Initialize Firebase
firebase.initializeApp(firebaseConfig);

export default firebase;

我有一个按钮:

<Text>Delete Account</Text>
<View>
    <Button
        title="Delete Account"
        color="#F9578E"
        accessibilityLabel="Delete Account"
    />
</View>

点击后用户退出并运行上述云功能。

【问题讨论】:

    标签: javascript firebase react-native google-cloud-functions react-native-firebase


    【解决方案1】:

    我不熟悉react-native和expo,但是从@react-native-firebase/functionsdocumentation看来你需要做如下:

    import functions from '@react-native-firebase/functions';
    
    function App() {
    
    
      useEffect(() => {
        functions()
          .httpsCallable('deleteUser')()
          .then(response => {
            // ....
          });
      }, []);
        
      // ...
    }
    

    您没有将任何数据从您的应用程序传递到您的 Callable Cloud Function,即您没有在 Cloud Function 中使用 data 对象,这就是您需要执行 functions().httpsCallable('deleteUser')() 的原因。 如果您需要传递一些数据,文档显示了一个示例 here,传递一个对象:

    functions().httpsCallable('listProducts')({
      page: 1,
      limit: 15,
    })
    

    (这完全符合 Firebase JS SDK 调用可调用云函数的方式,这就是我回答这个问题的原因,即使对 react-native 和 Expo 缺乏了解...... )

    【讨论】:

    • 只需将导入更改为import firebase from '../../firebase'; import 'firebase/functions''
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