FileUploadFileUpload is an advanced uploader with dragdrop support, multi file uploads, auto uploading, progress tracking and validations.
Documentation
Import
import {FileUploadModule} from 'primeng/fileupload';
Getting Started
FileUpload requires a url property as the upload target and a name to identify the files at backend.
<p-fileUpload name="myfile[]" url="./upload.php"></p-fileUpload>
Multiple Uploads
Only one file can be selected at a time, to allow selecting multiples enable multiple option.
<p-fileUpload name="myfile[]" url="./upload.php" multiple="multiple"></p-fileUpload>
DragDrop
File selection can also be done by dragging and dropping one or more to the content section of the component.
Auto Uploads
When auto property is enabled, upload begins as soon as file selection is completed or a file is dropped on the drop area.
<p-fileUpload name="myfile[]" url="./upload.php" multiple="multiple"
accept="image/*" auto="auto"></p-fileUpload>
File Types
Selectable file types can be restricted with accept property, example below only allows images to be uploaded. Read more about other possible values here.
<p-fileUpload name="myfile[]" url="./upload.php" multiple="multiple"
accept="image/*"></p-fileUpload>
File Size
Maximium file size can be restricted using maxFileSize property defined in bytes.
<p-fileUpload name="myfile[]" url="./upload.php" multiple="multiple"
accept="image/*" maxFileSize="1000000"></p-fileUpload>
In order to customize the default messages use invalidFileSizeMessageSummary and invalidFileSizeMessageDetail options. In summary {0} placeholder refers to the filename and in detail, file size.
- invalidFileSizeMessageSummary: '{0}: Invalid file size, '
- invalidFileSizeMessageDetail: string = 'maximum upload size is {0}.'
Templating
File list UI is customizable using a ng-template called "file" that gets the File instance as the implicit variable. Second ng-template named "content" can be used to place custom content inside the content section which would be useful to implement a user interface to manage the uploaded files such as removing them. Third and final ng-template option is "toolbar" to display custom content at toolbar.
<p-fileUpload name="myfile[]" url="./upload.php" multiple="multiple"
accept="image/*" maxFileSize="1000000">
<ng-template pTemplate="toolbar">
<div>Upload 3 Files</div>
</ng-template>
<ng-template let-file pTemplate="file">
<div>Custom UI to display a file</div>
</ng-template>
<ng-template pTemplate="content">
<div>Custom UI to manage uploaded files</div>
</ng-template>
</p-fileUpload>
Request Customization
Internally, FileUpload uses Angular's HttpClient module so you may take advantage of the built-in features such interceptors and header customization.
Basic UI
FileUpload basic mode provides a simpler UI as an alternative to advanced mode.
<p-fileUpload mode="basic" name="demo[]" url="./upload.php" accept="image/*" maxFileSize="1000000" (onUpload)="onBasicUpload($event)" auto="true"></p-fileUpload>
Custom Upload
Uploading implementation can be overriden by enabling customMode property and defining a custom upload handler event.
<p-fileUpload name="myfile[]" customUpload="true" (uploadHandler)="myUploader($event)"></p-fileUpload>
myUploader(event) {
//event.files == files to upload
}
Properties
Name | Type | Default | Description |
---|---|---|---|
name | string | null | Name of the request parameter to identify the files at backend. |
url | string | null | Remote url to upload the files. |
method | string | POST | HTTP method to send the files to the url. |
multiple | boolean | false | Used to select multiple files at once from file dialog. |
accept | string | false | Pattern to restrict the allowed file types such as "image/*". |
disabled | boolean | false | Disables the upload functionality. |
auto | boolean | false | When enabled, upload begins automatically after selection is completed. |
maxFileSize | number | null | Maximum file size allowed in bytes. |
invalidFileSizeMessageSummary | string | "{0}: Invalid file size, " | Summary message of the invalid fize size. |
invalidFileSizeMessageDetail | string | "maximum upload size is {0}." | Detail message of the invalid fize size. |
invalidFileTypeMessageSummary | string | "{0}: Invalid file type, " | Summary message of the invalid fize type. |
invalidFileTypeMessageDetail | string | "allowed file types: {0}." | Detail message of the invalid fize type. |
style | string | null | Inline style of the component. |
styleClass | string | null | Style class of the component. |
previewWidth | number | 50 | Width of the image thumbnail in pixels. |
chooseLabel | string | Choose | Label of the choose button. |
uploadLabel | string | Upload | Label of the upload button. |
cancelLabel | string | Cancel | Label of the cancel button. |
withCredentials | boolean | false | Cross-site Access-Control requests should be made using credentials such as cookies, authorization headers or TLS client certificates. |
mode | string | advanced | Defines the UI of the component, possible values are "advanced" and "basic". |
customUpload | boolean | false | Whether to use the default upload or a manual implementation defined in uploadHandler callback. |
showUploadButton | boolean | true | Defines the visibility of upload button for Client-side FileUpload. |
showCancelButton | boolean | true | Defines the visibility of cancel button for Client-side FileUpload. |
files | array | null | List of files to be provide to the FileUpload externally. |
Events
Name | Parameters | Description |
---|---|---|
onBeforeUpload | event.formData: FormData object. | Callback to invoke before file upload begins to customize the request such as post parameters before the files. |
onBeforeSend | event.formData: FormData object. | Callback to invoke before file send begins to customize the request such as adding headers. |
onUpload | event.files: Uploaded files. event.originalEvent: Http Event | Callback to invoke when file upload is complete. |
onError | event.files: Files that are not uploaded. event.error: Request Error. | Callback to invoke if file upload fails. |
onClear | -. | Callback to invoke when files in queue are removed without uploading using clear all button. |
onRemove | event.originalEvent: Original browser event. event.file: Selected file. | Callback to invoke when a file is removed without uploading using clear button of a file. |
onSelect | event.originalEvent: Original browser event. event.files: List of selected files. | Callback to invoke when files are selected. |
onProgress | event.originalEvent: Original browser event. event.progress: Calculated progress value. | Callback to invoke when files are being uploaded. |
uploadHandler | event.files: List of selected files. | Callback to invoke in custom upload mode to upload the files manually. |
Methods
Name | Parameters | Description |
---|---|---|
upload | - | Uploads the selected files. |
clear | - | Clears the files list. |
Styling
Following is the list of structural style classes, for theming classes visit theming page.
Name | Element |
---|---|
ui-fileupload | Container element |
ui-fileupload-buttonbar | Header containing the buttons |
ui-fileupload-content | Content section |
Dependencies
None.
Source
<p-toast [style]="{marginTop: '80px'}"></p-toast>
<h3 class="first">Advanced</h3>
<p-fileUpload name="demo[]" url="./upload.php" (onUpload)="onUpload($event)"
multiple="multiple" accept="image/*" maxFileSize="1000000">
<ng-template pTemplate="content">
<ul *ngIf="uploadedFiles.length">
<li *ngFor="let file of uploadedFiles">{{file.name}} - {{file.size}} bytes</li>
</ul>
</ng-template>
</p-fileUpload>
<h3>Basic</h3>
<p-fileUpload mode="basic" name="demo[]" url="./upload.php" accept="image/*" maxFileSize="1000000" (onUpload)="onBasicUpload($event)"></p-fileUpload>
<h3>Basic with Auto</h3>
<p-fileUpload #fubauto mode="basic" name="demo[]" url="./upload.php" accept="image/*" maxFileSize="1000000" (onUpload)="onBasicUploadAuto($event)" auto="true" chooseLabel="Browse"></p-fileUpload>
export class FileUploadDemo {
uploadedFiles: any[] = [];
constructor(private messageService: MessageService) {}
onUpload(event) {
for(let file of event.files) {
this.uploadedFiles.push(file);
}
this.messageService.add({severity: 'info', summary: 'File Uploaded', detail: ''});
}
}