我目前正在使用dropzone.js v3.10.2我在显示已上传的现有文件时遇到问题。我对php非常称职,但是当谈到ajax和js
时,我的知识有限如果你能提供帮助那就太棒了
提前致谢
的index.php
<html>
<head>
<link href="css/dropzone.css" type="text/css" rel="stylesheet" />
<script src="ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="dropzone.min.js"></script>
<script>
Dropzone.options.myDropzone = {
init: function() {
thisDropzone = this;
$.get('upload.php', function(data) {
$.each(data, function(key,value){
var mockFile = { name: value.name, size: value.size };
thisDropzone.options.addedfile.call(thisDropzone, mockFile);
thisDropzone.options.thumbnail.call(thisDropzone, mockFile, "uploads/"+value.name);
});
});
}
};
</script>
</head>
<body>
<form action="upload.php" class="dropzone" id="my-dropzone"></form>
</body>
upload.php的
<?php
$ds = DIRECTORY_SEPARATOR;
$storeFolder = 'uploads';
if (!empty($_FILES)) {
$tempFile = $_FILES['file']['tmp_name'];
$targetPath = dirname( __FILE__ ) . $ds. $storeFolder . $ds;
$targetFile = $targetPath. $_FILES['file']['name'];
move_uploaded_file($tempFile,$targetFile);
} else {
$result = array();
$files = scandir($storeFolder); //1
if ( false!==$files ) {
foreach ( $files as $file ) {
if ( '.'!=$file && '..'!=$file) { //2
$obj['name'] = $file;
$obj['size'] = filesize($storeFolder.$ds.$file);
$result[] = $obj;
}
}
}
header('Content-type: text/json'); //3
header('Content-type: application/json');
echo json_encode($result);
}
?>
PS。我知道php正在检索数据
提前致谢
达米安
答案 0 :(得分:13)
我检查了代码(来自starTutorial),它对我来说也不起作用(?)
我设法通过替换它来实现它:
$.get('upload.php', function(data) {
$.each(data, function(key,value) {
var mockFile = { name: value.name, size: value.size };
thisDropzone.options.addedfile.call(thisDropzone, mockFile);
thisDropzone.options.thumbnail.call(thisDropzone, mockFile, "uploads/"+value.name);
});
});
用这个:
$.getJSON('files/list-all', function(data) {
$.each(data, function(index, val) {
var mockFile = { name: val.name, size: val.size };
thisDropzone.options.addedfile.call(thisDropzone, mockFile);
thisDropzone.options.thumbnail.call(thisDropzone, mockFile, "uploads/" + val.name);
});
});
相信这个答案:https://stackoverflow.com/a/5531883/984975
编辑: 在4.0版中,现有文件的缩略图将显示在其中的提示栏中。要解决此问题,请添加:
thisDropzone.emit("complete", mockFile);
答案 1 :(得分:4)
到目前为止给出的解决方案不适用于 dropzone版本5.x 。 对我有用的是修改dropzone的配置选项,如下所示:
ctx.fillText(myLines[lineMarker%3], 8, 250);
ctx.fillText(("Line number is: "+lineMarker.toString()), 10,80);
概念是,创建模拟文件,并调用事件处理程序 init: function () {
var mockFile = {
name: 'FileName',
size: '1000',
type: 'image/jpeg',
accepted: true // required if using 'MaxFiles' option
};
this.files.push(mockFile); // add to files array
this.emit("addedfile", mockFile);
this.emit("thumbnail", mockFile, 'http://url/to/file');
this.emit("complete", mockFile);
}
和 addedfile
来绘制预览。然后最后调用 thumbnail
事件以确保没有显示进度条等。
答案 2 :(得分:1)
这是我实施它的方式。我使用 createThumbnailFromUrl 而不是使用发出缩略图事件。
HTML元素;
<form id="sample-img" action="/upload" class="dropzone">
<div class="dz-default dz-message"></div>
</form>
JS代码;
previewThumbailFromUrl({
selector: 'sample-img',
fileName: 'sampleImg',
imageURL: '/images/sample.png'
});
function previewThumbailFromUrl(opts) {
var imgDropzone = Dropzone.forElement("#" + opts.selector);
var mockFile = {
name: opts.fileName,
size: 12345,
accepted: true,
kind: 'image'
};
imgDropzone.emit("addedfile", mockFile);
imgDropzone.files.push(mockFile);
imgDropzone.createThumbnailFromUrl(mockFile, opts.imageURL, function() {
imgDropzone.emit("complete", mockFile);
});
}
答案 3 :(得分:0)
我遇到了maxFiles / maxfilesexceeded的问题,并在寻找一个anwser时花了一些时间,然后我在下面找到了这个链接:
$.each(obj, function(i, item) {
///faking the BytesSent its not essanail to me.. if you need it just pass the correct one
var upload = {bytesSent: 12345};
/// again fake the size..
var mockFile = {name: item.name, size: 12345, accepted: true};
mockFile.upload = upload;
mockFile.kind = "file";
Dropzone.forElement("#editfileuploader").emit("addedfile", mockFile);
//push the file to files array because getAcceptedFiles using this array length to get the currct files count..
Dropzone.forElement("#editfileuploader").files.push(mockFile);
//this for lettig dropzone to creat the thumbnail(item.ts has the file location)
Dropzone.forElement("#editfileuploader").emit("thumbnail", mockFile, item.ts);
//to show the success mark and to return image id response
Dropzone.forElement("#editfileuploader").emit("success", mockFile, item.id);
});
答案 4 :(得分:0)
我要把对我有用的解决方案留在这里。 (Dropzone v5.7.0和Codeigniter v3.1.11)
在我的App控制器中:
lib-module
在我的script.js中:
app
我将不同解决方案中的解决方案混合在一起。