如何限制上传的 dropzone.js 文件的数量? [英] How to limit the number of dropzone.js files uploaded?

问题描述

根据用例，我如何限制 dropzone.js 允许的文件数量?

Depending on the use case, how do I constrain the number of files that dropzone.js will allow?

例如，我可能只需要允许上传 1、2 或 4 个文件.

For example, I might need to only allow 1, 2, or 4 files uploaded.

它不是uploadMultiple.不幸的是，uploadMultiple 仅适用于每个请求处理的文件数.

It's not uploadMultiple. Unfortunately, uploadMultiple only applies to the number of files handled per request.

推荐答案

Nowell 指出这个问题已经解决截至 2013 年 8 月 6 日.使用此表单的工作示例可能是:

Nowell pointed it out that this has been addressed as of August 6th, 2013. A working example using this form might be:

<form class="dropzone" id="my-awesome-dropzone"></form>

你可以使用这个 JavaScript:

You could use this JavaScript:

Dropzone.options.myAwesomeDropzone = {
  maxFiles: 1,
  accept: function(file, done) {
    console.log("uploaded");
    done();
  },
  init: function() {
    this.on("maxfilesexceeded", function(file){
        alert("No more files please!");
    });
  }
};

dropzone 元素甚至获得了特殊的样式，因此您可以执行以下操作:

The dropzone element even gets a special style, so you can do things like:

<style>
  .dz-max-files-reached {background-color: red};
</style>

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