vue+draggable+el-upload上传图片拖拽重排方法

在这里插入图片描述
1.html

<el-row><el-col><el-form-item label="添加视频/图片" prop="device_id"><div class="image-upload"><draggable v-model="fileList" @update="dataDragEnd"><transition-group class="uploader"><div v-for="(item, index) in fileList" :key="item.url" class="upload-list"><img v-if="item.url" style="width:146px;height: 146px" :src="item.url" /><div class="icon-container"><span v-if="item.url" @click="handlePreviewNew(index)"><i class="el-icon-zoom-in"></i></span><span v-if="item.url" @click="handleRemoveNew(item, index)"><i class="el-icon-delete"></i></span></div></div></transition-group></draggable><el-upload name="image" ref="uploadFile" class="upload-demo" action="#" multiple :http-request="uolpadMorePic" :file-list="fileList" list-type="picture-card"><i class="el-icon-plus avatar-uploader-icon"></i></el-upload></div></el-form-item></el-col><ImageViewer v-if="previewVisible" :on-close="closeViewer" :url-list="[previewPath]" style="z-index: 9999;" />
</el-row>

2.js

import draggable from 'vuedraggable';
import ImageViewer from 'element-ui/packages/image/src/image-viewer.vue';
components: { draggable, ImageViewer },
//拖拽//图片方法function uploadImage(file) {return new Promise(async (resolve, reject) => {const formData = new FormData();formData.append('source', file.file);formData.append('modular', 'sccontrol');const { data } = await uploadsImg(formData);resolve(data);});}const fileList = ref([]);async function uolpadMorePic(file) {const data = await uploadImage(file);fileList.value.push({name: '图片',url: data.url,uid: Math.floor(Math.random() * 100000),});fileList.value.map((item, index) => (item.sortNum = index + 1));Message.success('上传成功');}function handleRemoveNew(file, index) {fileList.value.splice(index, 1);}const previewVisible = ref(false);const previewPath = ref('');function handlePreviewNew(index) {previewPath.value = fileList.value[index].url;previewVisible.value = true;}function closeViewer() {previewVisible.value = false;}function dataDragEnd() {fileList.value.forEach((item, index) => {item.sortNum = index + 1;});fileList.value = fileList.value.filter(item => {return item.url != '';});}