在这里我正在使用ng2-file-upload创建文件上传,在那里我要删除文件,通常我会得到它的价值,到现在为止还不错,现在我的问题甚至被认为是我放置了drop函数,但是在删除文件后我也想要使用按钮单击功能来检索文件上传值,如何在下面是我的代码?
注意:这里我需要获取fileList值
目前,我正在使用filedropped方法获取文件列表值,但通过单击按钮,我需要获取该值
import { Component } from '@angular/core';
import { FileUploader } from 'ng2-file-upload';
const URL = 'https://evening-anchorage-3159.herokuapp.com/api/';
@Component({
selector: 'my-app',
templateUrl: './app.component.html',
styleUrls: [ './app.component.css' ]
})
export class AppComponent {
fileSelectState = {};
formVisible = true;
temp: any;
public showInputForm: boolean = true;
public selectAll: boolean = true;
selectedAll: any;
imga = "http://icons.iconarchive.com/icons/hopstarter/soft-scraps/256/Button-Upload-icon.png";
public uploader:FileUploader = new FileUploader({url: URL});
public hasBaseDropZoneOver:boolean = false;
public hasAnotherDropZoneOver:boolean = false;
public selectedFilesArray = [];
private selectedFile;
public selectFile(e: any): void {
var target = e.target || e.srcElement || e.currentTarget;
var value = target.innerHTML;
this.selectedFile = value;
this.selectAll = true;
this.selectedFilesArray = [];
this.selectedFilesArray.push(this.selectedFile);
}
public fileOverBase(e: any): void {
this.hasBaseDropZoneOver = e;
}
public selectAllFiles(e: any): void {
this.selectedFilesArray = [];
if (e.target.checked) {
this.selectAll = true;
for (var item in this.uploader.queue) {
this.selectedFilesArray.push(this.uploader.queue[item].file.name);
}
}
for (var item in this.uploader.queue) {
this.fileSelectState[this.uploader.queue[item].file.name] = e.target.checked
}
}
public fileDropped(fileList: any): void
{
for(var i =0 ; i< fileList.length; i++){
this.fileSelectState[fileList[i].name] = true;
}
}
public fileChecked(e: any): void {
if (e.target.checked) {
console.log(this.selectedFilesArray);
this.selectedFilesArray.push(e.target.value);
if (this.selectedFilesArray.length > 1) {
this.selectedFile = e.target.value;
}
else {
this.selectedFile = e.target.value;
}
}
if (!e.target.checked) {
var index = this.selectedFilesArray.indexOf(e.target.value, 0);
if (index > -1) {
this.selectedFilesArray.splice(index, 1);
if (this.selectedFilesArray.length > 1) {
this.selectedFile = this.selectedFilesArray[0];
}
else if (this.selectedFilesArray.length == 1) {
this.selectAll = false;
this.selectedFile = this.selectedFilesArray[0];
}
else if (this.selectedFilesArray.length == 0) {
this.selectedFile = '';
}
}
}
}
getInfo(){
console.log('file info');
}
}
答案 0 :(得分:1)
编辑:OP希望文件对象在组件范围内可用。代码已在下面修改。
存储整个File对象,而不只是存储其name属性。首先,将Change fileSelectState
更改为and数组(或为此使用其他类成员)。然后将fileDropped()
方法更改为此:
public fileDropped(fileList: any): void
{
for(var i =0 ; i< fileList.length; i++){
this.fileSelectState.push(fileList[i]);
}
}
注意:如果不必支持IE,则可以将for循环替换为:
this.fileSelectState = Array.from(fileList);
更改:
getInfo(){
console.log('file info');
}
收件人:
getInfo(){
console.log(this.fileSelectState);
}
需要文件名时,请使用以下名称:
this.fileSelectState[0].name