vue3 element ui upload上传文件达到limit最大限制后隐藏上传框
修改前
修改后
/**
* @Author: 858834013@qq.com
* @Name: FileUpload
* @Date: 2022-05-26
* @Desc:
*/
<template>
<div class="upload-file" :class="{hide:fileList.length>limit}">
<el-upload list-type="picture-card" action="#"
:before-upload="handleBeforeUpload" :file-list="fileList"
:limit="limit"
:on-remove="handleRemove"
:show-file-list="true" ref="upload">
<slot></slot>
<template #file="{ file }">
<div>
<img class="el-upload-list__item-thumbnail" :src="file.url" alt=""/>
<span class="el-upload-list__item-actions">
<span
v-if="!disabled"
class="el-upload-list__item-delete"
@click="handleRemove(file)"
>
<el-icon><Delete/></el-icon>
</span>
</span>
</div>
</template>
</el-upload>
</div>
</template>
<script>
import configs from '@/config/config'
import { uuid } from 'vue-uuid'
import { getFileName } from '@/utils/auth'
const COS = require('cos-js-sdk-v5')
const Bucket = configs.Bucket
const Region = configs.Region
const cos = new COS({
SecretId: configs.SecretId,
SecretKey: configs.SecretKey
})
export default {
name: 'FileUpload',
props: {
// 值
value: [String, Object, Array],
// 数量限制
limit: {
type: Number,
default: 5
},
// 大小限制(MB)
fileSize: {
type: Number,
default: 5
},
// 文件类型, 例如['png', 'jpg', 'jpeg']
fileType: {
type: Array,
default: () => ['png', 'jpg', 'jpeg']
},
// 是否显示提示
isShowTip: {
type: Boolean,
default: true
}
},
data () {
return {
fileList: [],
cndUrl: '',
disabled: false,
dialogVisible: false,
dialogImageUrl: ''
}
},
watch: {
value: {
handler (val) {
if (val) {
let temp = 1
// 首先将值转为数组
const list = Array.isArray(val) ? val : this.value.split(',')
// 然后将数组转为对象数组
this.fileList = list.map(item => {
if (typeof item === 'string') {
if (item.indexOf(this.cndUrl) === -1) {
item = {
name: item,
url: this.cndUrl + item
}
} else {
item = {
name: item,
url: item
}
}
}
item.uid = item.uid || new Date().getTime() + temp++
return item
})
} else {
this.fileList = []
return []
}
},
deep: true,
immediate: true
}
},
computed: {
// 是否显示提示
showTip () {
return this.isShowTip && (this.fileType || this.fileSize)
}
},
methods: {
handlePictureCardPreview (e) {
console.log(e)
this.dialogImageUrl = e.url
this.dialogVisible = true
},
handleDownload (e) {
console.log(e)
},
handleRemove (e) {
console.log(e)
console.log(this.fileList)
this.fileList.splice(this.fileList.indexOf(e), 1)
console.log(this.fileList)
// this.dialogImageUrl = e.url
// this.dialogVisible = true
},
// 上传前校检格式和大小
handleBeforeUpload (file) {
// 校检文件类型
if (this.fileType) {
let fileExtension = ''
if (file.name.lastIndexOf('.') > -1) {
fileExtension = file.name.slice(file.name.lastIndexOf('.') + 1)
}
const isTypeOk = this.fileType.some(type => {
if (file.type.indexOf(type) > -1) return true
if (fileExtension && fileExtension.indexOf(type) > -1) return true
return false
})
if (!isTypeOk) {
this.$message.error(`文件格式不正确, 请上传${this.fileType.join('/')}格式文件!`)
return false
}
}
// 校检文件大小
if (this.fileSize) {
const isLt = file.size / 1024 / 1024 < this.fileSize
if (!isLt) {
this.$message.error(`上传文件大小不能超过 ${this.fileSize} MB!`)
return false
}
}
this.uploadFileToTencentClound(file).then(response => {
console.log(response)
this.fileList.push({
name: file.uid,
url: 'https://' + response
})
this.$emit('input', this.listToString(this.fileList))
})
},
/** 上传图片到腾讯云**/
uploadFileToTencentClound (file) {
console.log(file)
console.log('文件名')
return new Promise(resolve => {
cos.putObject(
{
Bucket: Bucket /* 存储桶 */,
Region: Region /* 存储桶所在地域,必须字段 */,
Key: uuid.v1() + '.' + file.name.split('.').pop().toLowerCase() /* 文件名 */,
StorageClass: 'STANDARD', // 上传模式, 标准模式
Body: file, // 上传文件对象
onProgress: function (info) {
console.log('[cos.postObject-seccess]', JSON.stringify(info))
}
},
function (err, data) {
console.log('[cos.postObject-err]', err || data)
resolve(data.Location)
}
)
})
},
// 删除文件
handleDelete (index) {
this.fileList.splice(index, 1)
this.$emit('input', this.listToString(this.fileList))
},
// 对象转成指定字符串分隔
listToString (list, separator) {
let strs = ''
separator = separator || ','
for (const i in list) {
strs += getFileName(list[i].url) + separator
// strs += list[i].url + separator
}
return strs !== '' ? strs.substr(0, strs.length - 1) : ''
}
}
}
</script>
<style scoped lang="scss">
.upload-file.hide {
:deep(.el-upload--picture-card) {
display: none;
}
}
</style>