问题
I'm using blueimp and jquery UI for file uploads.
I'd like to hide this button once a file is uploaded and display it once again if the photo is removed. How can I go about doing this?
Here is my HTML:
<form class="fileupload" action="${pageContext.request.contextPath}/someUrl"
method="POST" enctype="multipart/form-data">
<noscript><input type="hidden" name="redirect" value="https://www.somedomain.com"/></noscript>
<input type="hidden" name="type" value="image1">
<div class="row fileupload-buttonbar">
<div class="col-lg-7">
<span class="btn btn-info fileinput-button"><i class="fa fa-plus"></i> Add one photo...
<input type="file" name="image" accept="image/png, image/jpeg">
</span>
<span class="fileupload-process"></span>
</div>
<div class="col-lg-5 fileupload-progress fade">
<div class="progress progress-striped active" role="progressbar"
aria-valuemin="0"
aria-valuemax="100">
<div class="progress-bar progress-bar-success" style="width:0;"></div>
</div>
<div class="progress-extended"> </div>
</div>
</div>
<table role="presentation" class="table table-striped">
<tbody class="files"></tbody>
</table>
</form>
The X-TMPL:
<!-- The template to display files available for upload -->
<script id="template-upload" type="text/x-tmpl">
{% for (var i=0, file; file=o.files[i]; i++) { %}
<tr class="template-upload fade">
<td>
<span class="preview"></span>
</td>
<td>
<p class="name">{%=file.name%}</p>
<strong class="error text-danger"></strong>
</td>
<td>
<p class="size">Processing...</p>
<div class="progress progress-striped active" role="progressbar" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><div class="progress-bar progress-bar-success" style="width:0%;"></div></div>
</td>
<td>
{% if (!i && !o.options.autoUpload) { %}
<button class="btn btn-info start" disabled>
<span>Start</span>
<i class="fa fa-caret-right"></i>
</button>
{% } %}
{% if (!i) { %}
<button class="btn btn-warning cancel">
<i class="fa fa-trash-o"></i>
<span>Remove Photo</span>
</button>
{% } %}
</td>
</tr>
{% } %}
</script>
<!-- The template to display files available for download -->
<script id="template-download" type="text/x-tmpl">
{% for (var i=0, file; file=o.files[i]; i++) { %}
<tr class="template-download fade">
<td>
<span class="preview">
{% if (file.thumbnailUrl) { %}
<a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" data-gallery><img src="{%=file.thumbnailUrl%}"></a>
{% } else { %}
<img src="{%=file.thumbnail_url%}">
{% } %}
</span>
</td>
<td>
<p class="name">
{% if (file.url) { %}
<a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" {%=file.thumbnailUrl?'data-gallery':''%}>{%=file.name%}</a>
{% } else { %}
<span>{%=file.name%}</span>
{% } %}
</p>
{% if (file.error) { %}
<div><span class="text-danger"><i class="fa fa-exclamation-circle"></i> Error</span> {%=file.error%}</div>
{% } %}
</td>
<td>
<span class="size">{%=o.formatFileSize(file.size)%}</span>
</td>
<td>
{% if (file.deleteUrl) { %}
<button class="btn btn-danger delete" data-type="{%=file.deleteType%}" data-url="{%=file.deleteUrl%}"{% if (file.deleteWithCredentials) { %} data-xhr-fields='{"withCredentials":true}'{% } %}>
<i class="fa fa-trash-o"></i>
<span>Remove Photo</span>
</button>
<input type="checkbox" name="delete" value="1" class="toggle">
{% } else { %}
<button class="btn btn-warning cancel">
<i class="fa fa-trash-o"></i>
<span>Remove Photo</span>
</button>
{% } %}
</td>
</tr>
{% } %}
</script>
The closest post I've found on SO was not exactly relevant.
Update:
Tried the callback solution as answered by @ZakariaAcharki:
console.log('start')
$('input[name="image"]')
.bind('fileuploadcompleted', function (e, data) {
console.log('hiding')
$('.fileinput-button').hide();
})
.bind('fileuploaddestroyed', function (e, data) {
console.log('showing')
$('.fileinput-button').show();
});
console.log('ended')
Output reads: 'start' and 'ended'. Not sure why it's not getting fired.
Update 2: Hiding seems to work with this, but it doesn't show.
$('.fileupload')
.bind('fileuploaddone', function (e, data) {
console.log('hide');
$('.fileinput-button').hide();
})
.bind('fileuploaddestroy', function (e, data) { //tried fileuploaddestroyed too
console.log('show');
$('.fileinput-button').show();
});
The Javascript (aside from the unchanged tmpl.min.js and jquery file upload/UI files):
/*
* jQuery File Upload Plugin JS Example 8.9.1
* https://github.com/blueimp/jQuery-File-Upload
*
* Copyright 2010, Sebastian Tschan
* https://blueimp.net
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/MIT
*/
/* global $, window */
$(function () {
'use strict';
var uploadPaths = ["fileA", "fileB", "fileC", "fileCA", "fileCB", "fileCC"];
// Initialize the jQuery File Upload widget:
$('.fileupload').each(function (index) {
$(this).fileupload({
dropZone: $(this),
acceptFileTypes: /(\.|\/)(gif|jpe?g|png|doc|docx|pdf|ppt|pptx)$/i, maxFileSize: 10000000, // 10 MB
// Error and info messages:
messages: {
acceptFileTypes: 'Sorry, this file type not allowed. Please make sure the extension of the file is either .gif, .jpg, .jpeg, .png, .doc, .docx, .pdf, .ppt, or .pptx.',
maxFileSize: 'Please make sure your file is under 10 MB in size.'
}
});
// Load existing files:
$(this).addClass('fileupload-processing');
$.ajax({
// Uncomment the following to send cross-domain cookies:
//xhrFields: {withCredentials: true},
url: '/' + uploadPaths[index],
context: $(this)
}).done(function (data) {
$(this).fileupload('option', 'done').call(this, $.Event('done'), {result: {files: data.files}});
$(this).removeClass('fileupload-processing');
});
});
// Enable iframe cross-domain access via redirect option:
$('#fileupload').fileupload(
'option',
'redirect',
window.location.href.replace(
/\/[^\/]*$/,
'/cors/result.html?%s'
)
);
});
回答1:
Have you tried the callbacks fileuploadcompleted and fileuploaddestroyed :
$('input[name="image"]')
.bind('fileuploadcompleted', function (e, data) {
$('.fileinput-button').hide();
})
.bind('fileuploaddestroyed', function (e, data) {
$('.fileinput-button').show();
});
Hope this helps.
回答2:
Here is the solution our developer presented, by using CSS to hide and show the button, binding to the fileuploaddone event.
In the block with: $('.fileupload').each(function (index), bind as needed:
$(this).bind('fileuploaddone', function (e, data){
var form = $(this).closest("form");
var uploadButton = form.find(".btn.btn-info.fileinput-button");
uploadButton.css("visibility", "hidden");
});
// Load existing files:
if (typeof allFiles[index] !== 'undefined')
if (typeof allFiles[index] !== 'undefined'){
$(this).fileupload('option', 'done').call(this, $.Event('done'), {result: {files: allFiles[index].files}});
var form = $(this).closest("form");
var uploadButton = form.find(".btn.btn-info.fileinput-button");
uploadButton.css("visibility", "hidden");
}
});
});
and then later, make the button visible in a markImageAsDeleted function:
var uploadButton = form.find(".btn.btn-info.fileinput-button");
uploadButton.css("visibility", "visible");
来源：https://stackoverflow.com/questions/46475356/how-do-i-hide-the-upload-button-once-the-file-is-uploaded