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453 lines
17 KiB
Markdown
453 lines
17 KiB
Markdown
## Upload
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Upload files by clicking or drag-and-drop
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### Click to upload files
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:::demo Customize upload button type and text using `slot`. Set `limit` and `on-exceed` to limit the maximum number of uploads allowed and specify method when the limit is exceeded. Plus, you can abort removing a file in the `before-remove` hook.
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```html
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<el-upload
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class="upload-demo"
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action="https://jsonplaceholder.typicode.com/posts/"
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:on-preview="handlePreview"
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:on-remove="handleRemove"
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:before-remove="beforeRemove"
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multiple
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:limit="3"
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:on-exceed="handleExceed"
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:file-list="fileList"
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>
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<el-button size="small" type="primary">Click to upload</el-button>
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<template #tip>
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<div class="el-upload__tip">jpg/png files with a size less than 500kb</div>
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</template>
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</el-upload>
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<script>
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export default {
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data() {
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return {
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fileList: [
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{
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name: 'food.jpeg',
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url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
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},
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{
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name: 'food2.jpeg',
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url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
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},
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],
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}
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},
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methods: {
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handleRemove(file, fileList) {
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console.log(file, fileList)
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},
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handlePreview(file) {
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console.log(file)
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},
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handleExceed(files, fileList) {
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this.$message.warning(
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`The limit is 3, you selected ${
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files.length
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} files this time, add up to ${
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files.length + fileList.length
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} totally`
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)
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},
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beforeRemove(file, fileList) {
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return this.$confirm(`Cancel the transfert of ${file.name} ?`)
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},
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},
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}
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</script>
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```
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:::
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### User avatar upload
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Use `before-upload` hook to limit the upload file format and size.
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:::demo
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```html
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<el-upload
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class="avatar-uploader"
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action="https://jsonplaceholder.typicode.com/posts/"
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:show-file-list="false"
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:on-success="handleAvatarSuccess"
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:before-upload="beforeAvatarUpload"
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>
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<img v-if="imageUrl" :src="imageUrl" class="avatar" />
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<i v-else class="el-icon-plus avatar-uploader-icon"></i>
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</el-upload>
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<style>
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.avatar-uploader .el-upload {
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border: 1px dashed #d9d9d9;
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border-radius: 6px;
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cursor: pointer;
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position: relative;
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overflow: hidden;
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}
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.avatar-uploader .el-upload:hover {
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border-color: #409eff;
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}
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.avatar-uploader-icon {
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font-size: 28px;
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color: #8c939d;
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width: 178px;
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height: 178px;
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line-height: 178px;
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text-align: center;
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}
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.avatar {
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width: 178px;
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height: 178px;
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display: block;
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}
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</style>
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<script>
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export default {
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data() {
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return {
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imageUrl: '',
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}
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},
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methods: {
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handleAvatarSuccess(res, file) {
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this.imageUrl = URL.createObjectURL(file.raw)
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},
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beforeAvatarUpload(file) {
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const isJPG = file.type === 'image/jpeg'
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const isLt2M = file.size / 1024 / 1024 < 2
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if (!isJPG) {
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this.$message.error('Avatar picture must be JPG format!')
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}
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if (!isLt2M) {
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this.$message.error('Avatar picture size can not exceed 2MB!')
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}
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return isJPG && isLt2M
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},
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},
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}
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</script>
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```
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:::
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### Photo Wall
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Use `list-type` to change the fileList style.
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:::demo
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```html
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<el-upload
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action="https://jsonplaceholder.typicode.com/posts/"
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list-type="picture-card"
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:on-preview="handlePictureCardPreview"
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:on-remove="handleRemove"
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>
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<i class="el-icon-plus"></i>
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</el-upload>
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<el-dialog v-model="dialogVisible">
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<img width="100%" :src="dialogImageUrl" alt="" />
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</el-dialog>
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<script>
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export default {
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data() {
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return {
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dialogImageUrl: '',
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dialogVisible: false,
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}
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},
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methods: {
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handleRemove(file, fileList) {
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console.log(file, fileList)
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},
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handlePictureCardPreview(file) {
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this.dialogImageUrl = file.url
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this.dialogVisible = true
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},
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},
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}
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</script>
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```
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:::
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### Custom file thumbnail
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Use `scoped-slot` to change default thumbnail template.
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:::demo
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```html
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<el-upload action="#" list-type="picture-card" :auto-upload="false">
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<template #default>
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<i class="el-icon-plus"></i>
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</template>
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<template #file="{file}">
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<div>
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<img class="el-upload-list__item-thumbnail" :src="file.url" alt="" />
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<span class="el-upload-list__item-actions">
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<span
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class="el-upload-list__item-preview"
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@click="handlePictureCardPreview(file)"
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>
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<i class="el-icon-zoom-in"></i>
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</span>
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<span
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v-if="!disabled"
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class="el-upload-list__item-delete"
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@click="handleDownload(file)"
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>
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<i class="el-icon-download"></i>
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</span>
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<span
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v-if="!disabled"
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class="el-upload-list__item-delete"
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@click="handleRemove(file)"
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>
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<i class="el-icon-delete"></i>
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</span>
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</span>
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</div>
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</template>
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</el-upload>
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<el-dialog v-model="dialogVisible">
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<img width="100%" :src="dialogImageUrl" alt="" />
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</el-dialog>
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<script>
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export default {
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data() {
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return {
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dialogImageUrl: '',
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dialogVisible: false,
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disabled: false,
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}
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},
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methods: {
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handleRemove(file) {
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console.log(file)
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},
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handlePictureCardPreview(file) {
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this.dialogImageUrl = file.url
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this.dialogVisible = true
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},
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handleDownload(file) {
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console.log(file)
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},
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},
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}
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</script>
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```
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:::
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### FileList with thumbnail
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:::demo
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```html
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<el-upload
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class="upload-demo"
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action="https://jsonplaceholder.typicode.com/posts/"
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:on-preview="handlePreview"
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:on-remove="handleRemove"
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:file-list="fileList"
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list-type="picture"
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>
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<el-button size="small" type="primary">Click to upload</el-button>
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<template #tip>
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<div class="el-upload__tip">jpg/png files with a size less than 500kb</div>
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</template>
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</el-upload>
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<script>
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export default {
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data() {
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return {
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fileList: [
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{
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name: 'food.jpeg',
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url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
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},
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{
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name: 'food2.jpeg',
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url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
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},
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],
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}
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},
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methods: {
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handleRemove(file, fileList) {
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console.log(file, fileList)
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},
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handlePreview(file) {
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console.log(file)
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},
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},
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}
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</script>
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```
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:::
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### File list control
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Use `on-change` hook function to control upload file list
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:::demo
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```html
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<el-upload
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class="upload-demo"
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action="https://jsonplaceholder.typicode.com/posts/"
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:on-change="handleChange"
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:file-list="fileList"
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>
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<el-button size="small" type="primary">Click to upload</el-button>
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<template #tip>
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<div class="el-upload__tip">jpg/png files with a size less than 500kb</div>
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</template>
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</el-upload>
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<script>
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export default {
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data() {
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return {
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fileList: [
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{
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name: 'food.jpeg',
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url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
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},
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{
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name: 'food2.jpeg',
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url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
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},
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],
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}
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},
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methods: {
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handleChange(file, fileList) {
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this.fileList = fileList.slice(-3)
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},
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},
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}
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</script>
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```
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:::
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### Drag to upload
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You can drag your file to a certain area to upload it.
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:::demo
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```html
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<el-upload
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class="upload-demo"
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drag
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action="https://jsonplaceholder.typicode.com/posts/"
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:on-preview="handlePreview"
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:on-remove="handleRemove"
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:file-list="fileList"
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multiple
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>
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<i class="el-icon-upload"></i>
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<div class="el-upload__text">Drop file here or <em>click to upload</em></div>
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<template #tip>
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<div class="el-upload__tip">jpg/png files with a size less than 500kb</div>
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</template>
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</el-upload>
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```
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:::
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### Manual upload
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:::demo
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```html
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<el-upload
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class="upload-demo"
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ref="upload"
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action="https://jsonplaceholder.typicode.com/posts/"
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:auto-upload="false"
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>
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<template #trigger>
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<el-button size="small" type="primary">select file</el-button>
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</template>
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<el-button
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style="margin-left: 10px;"
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size="small"
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type="success"
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@click="submitUpload"
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>upload to server</el-button
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>
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<template #tip>
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<div class="el-upload__tip">jpg/png files with a size less than 500kb</div>
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</template>
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</el-upload>
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<script>
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export default {
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methods: {
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submitUpload() {
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this.$refs.upload.submit()
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},
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},
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}
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</script>
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```
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:::
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### Attributes
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| Attribute | Description | Type | Accepted Values | Default |
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| ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------- | ------------------------- | ------- |
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| action | required, request URL | string | — | — |
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| headers | request headers | object | — | — |
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| multiple | whether uploading multiple files is permitted | boolean | — | — |
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| data | additions options of request | object | — | — |
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| name | key name for uploaded file | string | — | file |
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| with-credentials | whether cookies are sent | boolean | — | false |
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| show-file-list | whether to show the uploaded file list | boolean | — | true |
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| drag | whether to activate drag and drop mode | boolean | — | false |
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| accept | accepted [file types](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#attr-accept), will not work when `thumbnail-mode` is `true` | string | — | — |
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| on-preview | hook function when clicking the uploaded files | function(file) | — | — |
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| on-remove | hook function when files are removed | function(file, fileList) | — | — |
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| on-success | hook function when uploaded successfully | function(response, file, fileList) | — | — |
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| on-error | hook function when some errors occurs | function(err, file, fileList) | — | — |
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| on-progress | hook function when some progress occurs | function(event, file, fileList) | — | — |
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| on-change | hook function when select file or upload file success or upload file fail | function(file, fileList) | — | — |
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| before-upload | hook function before uploading with the file to be uploaded as its parameter. If `false` is returned or a `Promise` is returned and then is rejected, uploading will be aborted | function(file) | — | — |
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| before-remove | hook function before removing a file with the file and file list as its parameters. If `false` is returned or a `Promise` is returned and then is rejected, removing will be aborted. | function(file, fileList) | — | — |
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| thumbnail-mode | whether thumbnail is displayed | boolean | — | false |
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| file-list | default uploaded files, e.g. [{name: 'food.jpg', url: 'https://xxx.cdn.com/xxx.jpg'}] | array | — | [] |
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| list-type | type of fileList | string | text/picture/picture-card | text |
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| auto-upload | whether to auto upload file | boolean | — | true |
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| http-request | override default xhr behavior, allowing you to implement your own upload-file's request | function | — | — |
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| disabled | whether to disable upload | boolean | — | false |
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| limit | maximum number of uploads allowed | number | — | — |
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| on-exceed | hook function when limit is exceeded | function(files, fileList) | — | - |
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### Slots
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| Name | Description |
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| ------- | ---------------------------------- |
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| trigger | content which triggers file dialog |
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| tip | content of tips |
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### Methods
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| Methods Name | Description | Parameters |
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| ------------ | --------------------------------------------------------------------------------------- | --------------------------- |
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| clearFiles | clear the uploaded file list (this method is not supported in the `before-upload` hook) | — |
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| abort | cancel upload request | （ file: fileList's item ） |
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| submit | upload the file list manually | — |
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