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* chore: Auto fill uid * docs: More desc
107 lines
6.2 KiB
Markdown
107 lines
6.2 KiB
Markdown
---
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category: Components
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type: Data Entry
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title: Upload
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cover: https://gw.alipayobjects.com/zos/alicdn/QaeBt_ZMg/Upload.svg
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---
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Upload file by selecting or dragging.
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## When To Use
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Uploading is the process of publishing information (web pages, text, pictures, video, etc.) to a remote server via a web page or upload tool.
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- When you need to upload one or more files.
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- When you need to show the process of uploading.
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- When you need to upload files by dragging and dropping.
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## API
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| Property | Description | Type | Default | Version |
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| --- | --- | --- | --- | --- |
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| accept | File types that can be accepted. See [input accept Attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#accept) | string | - | |
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| action | Uploading URL | string \| (file) => Promise<string> | - | |
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| beforeUpload | Hook function which will be executed before uploading. Uploading will be stopped with `false` or a rejected Promise returned. **Warning:this function is not supported in IE9** | (file, fileList) => boolean \| Promise<File> | - | |
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| customRequest | Override for the default xhr behavior allowing for additional customization and ability to implement your own XMLHttpRequest | function | - | |
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| data | Uploading extra params or function which can return uploading extra params | object \| (file) => object \| Promise<object> | - | |
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| defaultFileList | Default list of files that have been uploaded | object\[] | - | |
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| directory | Support upload whole directory ([caniuse](https://caniuse.com/#feat=input-file-directory)) | boolean | false | |
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| disabled | Disable upload button | boolean | false | |
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| fileList | List of files that have been uploaded (controlled). Here is a common issue [#2423](https://github.com/ant-design/ant-design/issues/2423) when using it | [UploadFile](#UploadFile)\[] | - | |
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| headers | Set request headers, valid above IE10 | object | - | |
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| iconRender | Custom show icon | (file: UploadFile, listType?: UploadListType) => ReactNode | - | |
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| isImageUrl | Customize if render <img /> in thumbnail | (file: UploadFile) => boolean | [(inside implementation)](https://github.com/ant-design/ant-design/blob/4ad5830eecfb87471cd8ac588c5d992862b70770/components/upload/utils.tsx#L47-L68) | |
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| itemRender | Custom item of uploadList | (originNode: ReactElement, file: UploadFile, fileList?: object\[]) => React.ReactNode | - | 4.7.0 |
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| listType | Built-in stylesheets, support for three types: `text`, `picture` or `picture-card` | string | `text` | |
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| method | The http method of upload request | string | `post` | |
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| multiple | Whether to support selected multiple file. `IE10+` supported. You can select multiple files with CTRL holding down while multiple is set to be true | boolean | false | |
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| name | The name of uploading file | string | `file` | |
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| openFileDialogOnClick | Click open file dialog | boolean | true | |
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| previewFile | Customize preview file logic | (file: File \| Blob) => Promise<dataURL: string> | - | |
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| progress | Custom progress bar | [ProgressProps](/components/progress/#API) (support `type="line"` only) | { strokeWidth: 2, showInfo: false } | 4.3.0 |
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| showUploadList | Whether to show default upload list, could be an object to specify `showPreviewIcon`, `showRemoveIcon`, `showDownloadIcon`, `removeIcon` and `downloadIcon` individually | boolean \| { showPreviewIcon?: boolean, showDownloadIcon?: boolean, showRemoveIcon?: boolean, removeIcon?: ReactNode \| (file: UploadFile) => ReactNode, downloadIcon?: ReactNode \| (file: UploadFile) => ReactNode } | true | function: 4.7.0 |
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| withCredentials | The ajax upload with cookie sent | boolean | false | |
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| onChange | A callback function, can be executed when uploading state is changing, see [onChange](#onChange) | function | - | |
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| onDownload | Click the method to download the file, pass the method to perform the method logic, do not pass the default jump to the new TAB | function(file): void | (Jump to new TAB) | |
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| onPreview | A callback function, will be executed when file link or preview icon is clicked | function(file) | - | |
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| onRemove | A callback function, will be executed when removing file button is clicked, remove event will be prevented when return value is false or a Promise which resolve(false) or reject | function(file): boolean \| Promise | - | |
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### UploadFile
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Extends File with additional props.
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| Property | Description | Type | Default |
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| --- | --- | --- | --- |
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| uid | unique id. Will auto generate when not provided | string | - |
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| name | File name | string | - |
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| url | Download url | string | - |
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| status | Upload status. Show different style when configured | `error` \| `success` \| `done` \| `uploading` \| `removed` | - |
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| percent | Upload progress percent | number | - |
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| thumbUrl | Thumb image url | string | - |
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### onChange
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> The function will be called when uploading is in progress, completed or failed.
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When uploading state change, it returns:
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```js
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{
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file: { /* ... */ },
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fileList: [ /* ... */ ],
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event: { /* ... */ },
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}
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```
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1. `file` File object for the current operation.
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```js
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{
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uid: 'uid', // unique identifier, negative is recommend, to prevent interference with internal generated id
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name: 'xx.png', // file name
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status: 'done', // options:uploading, done, error, removed. Intercepted file by beforeUpload don't have status field.
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response: '{"status": "success"}', // response from server
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linkProps: '{"download": "image"}', // additional html props of file link
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xhr: 'XMLHttpRequest{ ... }', // XMLHttpRequest Header
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}
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```
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2. `fileList` current list of files
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3. `event` response from server, including uploading progress, supported by advanced browsers.
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## FAQ
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### How to implement upload server side?
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- You can consult [jQuery-File-Upload](https://github.com/blueimp/jQuery-File-Upload/wiki#server-side) about how to implement server side upload interface.
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- There is a mock example of [express](https://github.com/react-component/upload/blob/master/server.js) in rc-upload.
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### I want to display download links.
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Please set property `url` of each item in `fileList` to control content of link.
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### How to use `customRequest`?
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See <https://github.com/react-component/upload#customrequest>.
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