如何将取消上传按钮添加到jquery-file-upload basic-plugin [英] how to add a cancel upload button to jquery-file-upload basic-plugin

问题描述

我正在使用带有Rails 4的jquery-file-upload，
我是从 https://github.com/tors/jquery-fileupload-rails-paperclip-example 。所以我使用的是jquery-rails，jquery-fileupload-rails和paperclip gems。

I'm using jquery-file-upload with Rails 4, I started from https://github.com/tors/jquery-fileupload-rails-paperclip-example. So I'm using jquery-rails, jquery-fileupload-rails and paperclip gems.

因为我不是jquery或javascript的破解，所以我试图简化并了解所有内容，更改代码以使用js.erb远程调用rails。

As I am not a crack on jquery or javascript, I'm trying to simplify and understand everything, changing code to make remote calls to rails with js.erb.

这样，文件列表是一个rails partial（_videos.html_erb），上传控制器中的索引操作有一个index.js.erb来响应js。
我在de fileupload 已完成事件中添加了 $。get（'/ uploads'）; 刷新部分。

So that, the file list is a rails partial (_videos.html_erb) and index action in uploads controller has a index.js.erb to respond with js. And I have added $.get('/uploads'); in de fileupload done event to refresh the partial.

一切正常，除非取消按钮，我不明白我必须做什么以及在哪里。

everything works well, unless the cancel button and I don't understand what I have to do and where.

这是 docs 告诉我：

如何取消上传

可以通过在jqXHR对象上调用abort方法来取消上传：

var jqXHR = $('#fileupload').fileupload('send', {files: filesList})
    .error(function (jqXHR, textStatus, errorThrown) {
        if (errorThrown === 'abort') {
            alert('File Upload has been canceled');
        }
    });
$('button.cancel').click(function (e) {
    jqXHR.abort();
});

这是我的index.html.erb：

And this is my index.html.erb:

这里，对于进度条和文本指示，我把代码提取为 file-upload-basic-plugin

Here, for progress bar and text indications, I put code extracted form file-upload-basic-plugin

<div class="container">
<h2 id="titol">Upload file</h2>
<%= form_for Upload.new, :html => { :multipart => true, :id => "fileupload"  } do |f| %>
  <div class="row fileupload-buttonbar">
      <%= f.file_field :upload %>
      <button class="cancel">Cancel upload</button>
  </div>

  <hr/>
<% end %>

<div id="videos">
  <%= render partial: "videos" %>
</div>

<!--..........This is necessary even though I don't know why -->
<script id="template-upload" type="text/x-tmpl">
</script>

<!-- The template to display files available for download -->
<script id="template-download" type="text/x-tmpl">
</script>
<!--............................................................... -->

<script type="text/javascript" charset="utf-8">

  $('#fileupload').fileupload({
    dataType: 'json',
    add: function (e, data) {
        data.context = $('<p/>').text('Uploading...').appendTo(document.body);
        data.submit();
    },
    done: function (e, data) {
        data.context.text('Upload finished.');
        $.get('/uploads');
    }

  });

  $('#fileupload').fileupload({
    progressall: function (e, data) {
      $("#titol").text(data.loaded);
      var progress = parseInt(data.loaded / data.total * 100, 10);
      $('#progress .bar').css(
          'width', progress + '%');
      }
  });

</script>

我想我必须把这样的东西放在这里var xhr =

I supose I have to put somthing like this "var xhr = "

  $('#fileupload').fileupload({
    dataType: 'json',
    add: function (e, data) {
        data.context = $('<p/>').text('Uploading...').appendTo(document.body);
        var xhr = data.submit();
    },
    done: function (e, data) {
        data.context.text('Upload finished.');
        $.get('/uploads');
    }

  });

然后

$(function () {

  $('button.cancel').click(function (e) {
    jqXHR.abort();
  });

})

但这不起作用且代码来自各地的文档崩溃： filesList不存在 ...等

but this doesn't work and the code from docs crash everywhere: filesList doesn't exist...etc

嗯，我想我需要一些基本的关于jquery或javascript的指导

Well, I guess I need some basic guidance on jquery or javascript

提前致谢

推荐答案

你可以还可以在数据上调用 abort（）来取消单个正在进行的上传。

You can also call abort() on data to cancel individual in-progress uploads.

   $( '#fileUpload' ).fileupload( {
        dataType: 'json',
        add: function( e, data ) {
            var abortBtn = $( '<a/>' )
                .attr( 'href', 'javascript:void(0)' )
                .append( 'Abort' )
                .click( function() {
                    data.abort();
                    data.context.remove();
                } );

            data.context = $( '<div/>' )
                .appendTo( document.body );

            data.context.append( $( '<p/>' ) )
                .append( 'Uploading ' + data.files[0].name )
                .append( abortBtn );

            data.submit();
        },
        done: function( e, data ) {
            /* ... */
        }
    });

这篇关于如何将取消上传按钮添加到jquery-file-upload basic-plugin的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！