如何从Firebase存储中删除Vue.js图像？

Question

我将重新利用现有的Vue.js / Firebase图像上传组件，以启用从存储中删除图像（https://codesandbox.io/s/219m6n7z3j）。我试图向代码中添加删除功能，以及为每个上传的图片添加按钮。我已经设置了remove（）函数来定位Firebase存储中“ images /”目录中的图像。但是，我只会将错误消息返回到控制台。关于如何设置删除功能以删除上传的图像的任何建议？我的组件在下面。谢谢！

<template>
  <div id="app">
    <v-toolbar color="indigo" dark fixed app>
      <v-toolbar-title>Vue Firebase Image Upload</v-toolbar-title>
    </v-toolbar>
    <v-app id="inspire">
      <v-content>
        <v-container fluid>
          <v-layout align-center justify-center>
            <v-flex xs12 sm8 md4>
              <img :src="imageUrl" height="150" v-if="imageUrl" />
              <v-text-field label="Select Image" @click="pickFile" v-model="imageName"></v-text-field>
              <input type="file" style="display: none" ref="image" accept="image/*" @change="onFilePicked"/>
              <v-btn color="primary" @click="upload">UPLOAD</v-btn>
            </v-flex>
          </v-layout>

          <br />

          <v-layout align-center justify-center>
            <v-flex xs12 sm8 md4>
              <div v-for="img in imgUrls">
                <img :src="img.downloadUrl" height="150" />
                <v-btn @click="remove()">delete</v-btn>
              </div>
            </v-flex>
          </v-layout>
        </v-container>
      </v-content>
    </v-app>
  </div>
</template>

<script>
import firebase from 'firebase';
import { db } from "./main";

export default {
  name: "App",
  data() {
    return {
      photo: null,
      photo_url: null,
      dialog: false,
      imageName: "",
      imageUrl: "",
      imageFile: "",
      imgUrls: []
    };
  },
  created() {
    this.getImages();
  },
  methods: {
    getImages: function() {
      db.collection("images")
        .get()
        .then(snap => {
          const array = [];
          snap.forEach(doc => {
            array.push(doc.data());
          });
          this.imgUrls = array;
        });

      this.imageName = "";
      this.imageFile = "";
      this.imageUrl = "";
    },

    pickFile() {
      this.$refs.image.click();
    },

    onFilePicked(e) {
      const files = e.target.files;
      if (files[0] !== undefined) {
        this.imageName = files[0].name;
        if (this.imageName.lastIndexOf(".") <= 0) {
          return;
        }
        const fr = new FileReader();
        fr.readAsDataURL(files[0]);
        fr.addEventListener("load", () => {
          this.imageUrl = fr.result;
          this.imageFile = files[0];
        });
      } else {
        this.imageName = "";
        this.imageFile = "";
        this.imageUrl = "";
      }
    },
    upload: function() {
      var storageRef = firebase.storage().ref();
      var mountainsRef = storageRef.child(`images/${this.imageName}`);
      mountainsRef.put(this.imageFile).then(snapshot => {
        snapshot.ref.getDownloadURL().then(downloadURL => {
          this.imageUrl = downloadURL;
          const bucketName = "xxx-xxxx-xxxxx.appspot.com";
          const filePath = this.imageName;
          db.collection("images").add({
            downloadURL,
            downloadUrl:
              `https://firebasestorage.googleapis.com/v0/b/${bucketName}/o/images` +
              "%2F" +
              `${encodeURIComponent(filePath)}?alt=media`,
            timestamp: Date.now()
          });
          this.getImages();
        });
      });
    },
    remove: function() {
      firebase.storage().ref('images/' + this.imageFile).delete()
        .then(() => {
          this.imageURL = ''
        })
        .catch((error) => {
          console.error(`file delete error occurred: ${error}`)
        })
    }
  },
  components: {}
};
</script>

<style>
#app {
  font-family: "Avenir", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>