Vue Firebase Cloud Firestore Case: Practice and Experience Sharing on Building Newsletter Applications

Vue Firebase Cloud Firestore Case: Practice and Experience Sharing of Building Newsletter Applications

Introduction:
With the development of mobile Internet, newsletter applications have become An important channel for people to obtain instant news and information. This article will introduce how to use Vue, Firebase and Cloud Firestore to build a simple newsletter application, and share some experiences and considerations encountered in practice.

1. Preparation
Before you start, you need to install Node.js and Vue CLI. If you haven't installed it yet, you can download and install it from the official website.

2. Create a project
Execute the following command on the command line to create a new Vue project:

vue create news-app

Select the default settings and wait for the project to be created.

3. Integrate Firebase

1. Create a Firebase project
   Create a new project on the Firebase official website and get your Firebase configuration code in the project settings.

2. Install Firebase
   Execute the following command in the project root directory to install Firebase related dependencies:

   npm install firebase

3. Configure Firebase
   In the src directory Create a file called firebase.js and copy the Firebase config code into the file:

   // firebase.js
   import firebase from 'firebase/app';
   import 'firebase/firestore';
   
   const firebaseConfig = {
     // your firebase config
   };
   
   firebase.initializeApp(firebaseConfig);
   
   export default firebase;

   You need to replace your firebase config with what you have in Firebase The configuration code obtained from above.

4. Using Firebase
   Introduce the newly configured Firebase instance into the Vue component and use it to access the Cloud Firestore database.

In the Vue component that needs to access data, introduce the firebase.js file you just created, and use firebase.firestore() to obtain the database instance:

import firebase from '@/firebase.js';

export default {
  data() {
    return {
      newsList: []
    };
  },
  mounted() {
    const db = firebase.firestore();
    // 在这里可以执行数据库操作
  }
}

4. Building a newsletter application
We will take a simple news list application as an example to show how to use Firebase and Cloud Firestore to add and display news in real time.

1. Initializing data
   In the Cloud Firestore database, we need to create a collection called news and add some initial news data to it.

You can call the getNewsData method in the mounted life cycle hook function to get news data from Firestore and store it in the component's newsList attribute.

export default {
  data() {
    return {
      newsList: []
    };
  },
  mounted() {
    this.getNewsData();
  },
  methods: {
    async getNewsData() {
      const db = firebase.firestore();
      const snapshot = await db.collection('news').get();
      snapshot.forEach(doc => {
        this.newsList.push(doc.data());
      });
    }
  }
};

2. Update news in real time
   We hope that the application can update news in real time, that is, when new news is added to the Firestore database, the application can automatically display it. In order to achieve this function, we can use Firestore's onSnapshot method.

We can call the startNewsUpdate method in the mounted life cycle hook function to listen to Firestore's news collection and update it when new Update the newsList array when a document is added.

export default {
  data() {
    return {
      newsList: []
    };
  },
  mounted() {
    this.getNewsData();
    this.startNewsUpdate();
  },
  methods: {
    async getNewsData() {
      // ...
    },
    async startNewsUpdate() {
      const db = firebase.firestore();
      const collectionRef = db.collection('news');

      collectionRef.onSnapshot(snapshot => {
        snapshot.docChanges().forEach(change => {
          if (change.type === 'added') {
            this.newsList.push(change.doc.data());
          }
        });
      });
    }
  }
};

3. Add news
   We also need a function to add news. After the user enters the news content, the news is added to the Firestore database.

First, we need to add a form to the Vue template for entering news content, and bind an addNews method to the form's @submit on events.

<template>
  <form @submit="addNews">
    <input type="text" v-model="newsTitle" placeholder="新闻标题" />
    <textarea v-model="newsContent" placeholder="新闻内容"></textarea>
    <button type="submit">添加新闻</button>
  </form>
</template>

Then, implement the addNews method in the methods of the Vue component to add the news content entered by the user to the Firestore database and update the news list in real time.

export default {
  data() {
    return {
      newsTitle: '',
      newsContent: ''
    };
  },
  methods: {
    async addNews(e) {
      e.preventDefault();
      
      const db = firebase.firestore();
      await db.collection('news').add({
        title: this.newsTitle,
        content: this.newsContent
      });

      this.newsTitle = '';
      this.newsContent = '';
    }
  }
};

5. Summary and Notes
In this article, we built a simple newsletter application using Vue, Firebase and Cloud Firestore, and implemented the function of adding and displaying news in real time. During practice, we also need to pay attention to the following matters:

1. Firebase configuration must be correct and confidential, and do not leak sensitive information.
2. When the amount of data in Firestore is too large, use query methods such as limit and where to optimize performance.
3. If you need to modify the data in the collection, please use Firestore's update method instead of the set method to avoid overwriting the entire document.

I hope this article helps you understand how to build a newsletter application using Vue, Firebase and Cloud Firestore. Good luck with your development!

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