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How to upload multiple images to firebase v9 storage and get all download URL 's to update it in cloud firestore database using Vue.js

Vue dev tools screen shot Console log Screen shot

Script Code:

 import firebase from "@/firebase";
    import {
      getStorage,
      ref,
      uploadBytes,
      getDownloadURL,
      updateDoc,
    } from "firebase/storage";
    export default {
      data() {
        return {
          imagesUrl: [],
        };
      },
      methods: {
        chooseFile() {
          document.getElementById("imgUpload").click();
        },
    
        uploadImage(e) {
          this.files.push(e.target.files[0]);
          this.images.push(URL.createObjetURL(this.files));
        },
        createCity: async function () {
          const docRef = firebase.addDoc(
            firebase.collection(firebase.firestoreDB, "cities"),
            {
              name: "Tokyo",
              country: "Japan",
            }
          );
    
          var photos = [];
    
          for (var i = 0; i < this.files.length; i++) {
            // files.values contains all the files objects
            const file = this.files[i];
            const storage = getStorage();
            const metadata = {
              contentType: "image/jpeg",
            };
            const storageRef = ref(storage, "temp/" + docRef.id + "/" + file.name);
    
            const snapshot = await uploadBytes(storageRef, file, metadata);
            const downloadURL = await getDownloadURL(snapshot.ref);
            photos.push(downloadURL);
          }
          await console.log(photos);
          await updateDoc(docRef.id, { photosURLs: photos });
        },
      },
    };

Console Log Data:

  • TypeError: Object(...) is not a function at VueComponent._callee$ (fragment.vue?262c:453:1) at tryCatch (runtime.js?96cf:63:1) at Generator.invoke [as _invoke] (runtime.js?96cf:294:1) at Generator.eval [as next] (runtime.js?96cf:119:1) at asyncGeneratorStep (asyncToGenerator.js?1da1:3:1) at _next (asyncToGenerator.js?1da1:25:1)
about 4 years ago · Juan Pablo Isaza
1 answers
Answer question

0

You should not use the await keyword within a for or a forEach loop, see here or here.

You should use Promise.all() as follows (untested):

  const promises = [];

  for (var i = 0; i < this.files.length; i++) {
    // files.values contains all the files objects
    const file = this.files[i];
    const storage = getStorage();
    const metadata = {
      contentType: "image/jpeg",
    };
    const storageRef = ref(storage, "temp/" + docRef.id + "/" + file.name);

    promises.push(uploadBytes(storageRef, file, metadata).then(uploadResult => {return getDownloadURL(uploadResult.ref)}))
    
  }

  const photos = await Promise.all(promises);

  await console.log(photos);
  await updateDoc(docRef, { photosURLs: photos }); // <= See the change here docRef and not docRef.id
about 4 years ago · Juan Pablo Isaza Report
Answer question
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