我将如何将https://github.com/blueimp/jQuery-File-Upload集成到 Rails 应用程序中。wiki 上有自定义服务器的设置指南，但我被困在https://github.com/blueimp/jQuery-File-Upload/wiki/Setup（自定义服务器）上的#4。我应该创建一个新视图吗？任何帮助将不胜感激。
谢谢
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1986 次
2 回答
1
我认为#4 告诉您的指令是简单地将各种 javascript 文件复制到您的自定义服务器环境中，在本例中为 Ruby on Rails。
最好使用资产管道在 RoR 中提供 Javascript。
1）下载并解压存档到你的开发环境，你要解压文件夹 JQuery-File-Upload 到 app/assets/javascripts 目录。
完成后，您应该拥有：
/whatever/app/assets/javascripts/JQuery-File-Upload/东西
所以现在，你必须告诉 rails 什么时候需要加载 javascript。
为了简单起见，我们假设每个页面都需要 javascript！
如果您当前的应用程序相当“默认”，则 javascript 清单文件：
app/assets/javscripts/application.js
控制将包含在每个页面上的 javascript
将此行添加到该文件：
//= require_tree .
或者
//= require_tree JQuery-File-Upload
如果 app/assets/javascripts 中只有 ONE 目录，则上述两者相同。
于 2013-08-30T06:14:36.267 回答
1
嗨，它非常易于在 rails 中使用 blueimp 文件上传。只需安装可用于 blueimp 文件上传的 gem。著名的是 Carrierwave gem 和 Dragonfly gem。如果你有这些 gem 之一，你可以使用以下步骤来处理 blueimp
先决条件
have jQuery setup in your app
copy jQuery File Upload files in the proper directories of your Rails app
与 Carrierwave gem 一起使用的模型
我们将使用基本的 Carrierwave 上传器：
class AvatarUploader < CarrierWave::Uploader::Base
storage :file
def store_dir
"uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
end
end
让我们建立一个图片模型
class Picture < ActiveRecord::Base
include Rails.application.routes.url_helpers
mount_uploader :avatar, AvatarUploader
#one convenient method to pass jq_upload the necessary information
def to_jq_upload
{
"name" => read_attribute(:avatar),
"size" => avatar.size,
"url" => avatar.url,
"thumbnail_url" => avatar.thumb.url,
"delete_url" => picture_path(:id => id),
"delete_type" => "DELETE"
}
end
end
与蜻蜓宝石一起使用
设置图片模型（确保您的数据库中有 avatar_uid 和 avatar_name 列）
class Picture < ActiveRecord::Base
include Rails.application.routes.url_helpers
image_accessor :avatar
#one convenient method to pass jq_upload the necessary information
def to_jq_upload
{
"name" => read_attribute(:avatar_name),
"size" => avatar.size,
"url" => avatar.url,
"thumbnail_url" => avatar.thumb('80x80#').url,
"delete_url" => picture_path(:id => id),
"delete_type" => "DELETE"
}
end
end
控制器
第一个处理下载的控制器：（html 响应适用于使用 iframe 解决方案的浏览器）
class PicturesController < ApplicationController
def index
@pictures = Picture.all
render :json => @pictures.collect { |p| p.to_jq_upload }.to_json
end
def create
@picture = Picture.new(params[:picture])
if @picture.save
respond_to do |format|
format.html {
render :json => [@picture.to_jq_upload].to_json,
:content_type => 'text/html',
:layout => false
}
format.json {
render :json => [@picture.to_jq_upload].to_json
}
end
else
render :json => [{:error => "custom_failure"}], :status => 304
end
end
def destroy
@picture = Picture.find(params[:id])
@picture.destroy
render :json => true
end
end
它的路线：
资源 :pictures, :only => [:index, :create, :destroy]
让我们玩
在您想要的任何视图文件中，复制粘贴此代码并享受。
<h2><%= t('photos.title') %></h2>
<%= form_for Picture.new, :html => { :multipart => true, :id => "fileupload" } do |f| %>
<!-- The fileupload-buttonbar contains buttons to add/delete files and start/cancel the upload -->
<div class="row fileupload-buttonbar">
<div class="span7">
<!-- The fileinput-button span is used to style the file input field as button -->
<span class="btn btn-success fileinput-button">
<i class="icon-plus icon-white"></i>
<span>Add files...</span>
<%= f.file_field :avatar %>
</span>
<button type="submit" class="btn btn-primary start">
<i class="icon-upload icon-white"></i>
<span>Start upload</span>
</button>
<button type="reset" class="btn btn-warning cancel">
<i class="icon-ban-circle icon-white"></i>
<span>Cancel upload</span>
</button>
<button type="button" class="btn btn-danger delete">
<i class="icon-trash icon-white"></i>
<span>Delete</span>
</button>
<input type="checkbox" class="toggle">
</div>
<div class="span5">
<!-- The global progress bar -->
<div class="progress progress-success progress-striped active fade">
<div class="bar" style="width:0%;"></div>
</div>
</div>
</div>
<!-- The loading indicator is shown during image processing -->
<div class="fileupload-loading"></div>
<br>
<!-- The table listing the files available for upload/download -->
<table class="table table-striped"><tbody class="files" data-toggle="modal-gallery" data-target="#modal-gallery"></tbody>
</table>
<% end %>
<script>
var fileUploadErrors = {
maxFileSize: 'File is too big',
minFileSize: 'File is too small',
acceptFileTypes: 'Filetype not allowed',
maxNumberOfFiles: 'Max number of files exceeded',
uploadedBytes: 'Uploaded bytes exceed file size',
emptyResult: 'Empty file upload result'
};
</script>
<!-- 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 class="preview"><span class="fade"></span></td>
<td class="name"><span>{%=file.name%}</span></td>
<td class="size"><span>{%=o.formatFileSize(file.size)%}</span></td>
{% if (file.error) { %}
<td class="error" colspan="2"><span class="label label-important">{%=locale.fileupload.error%}</span> {%=locale.fileupload.errors[file.error] || file.error%}</td>
{% } else if (o.files.valid && !i) { %}
<td>
<div class="progress progress-success progress-striped active"><div class="bar" style="width:0%;"></div></div>
</td>
<td class="start">{% if (!o.options.autoUpload) { %}
<button class="btn btn-primary">
<i class="icon-upload icon-white"></i>
<span>{%=locale.fileupload.start%}</span>
</button>
{% } %}</td>
{% } else { %}
<td colspan="2"></td>
{% } %}
<td class="cancel">{% if (!i) { %}
<button class="btn btn-warning">
<i class="icon-ban-circle icon-white"></i>
<span>{%=locale.fileupload.cancel%}</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">
{% if (file.error) { %}
<td></td>
<td class="name"><span>{%=file.name%}</span></td>
<td class="size"><span>{%=o.formatFileSize(file.size)%}</span></td>
<td class="error" colspan="2"><span class="label label-important">{%=locale.fileupload.error%}</span> {%=locale.fileupload.errors[file.error] || file.error%}</td>
{% } else { %}
<td class="preview">{% if (file.thumbnail_url) { %}
<a href="{%=file.url%}" title="{%=file.name%}" rel="gallery" download="{%=file.name%}"><img src="{%=file.thumbnail_url%}"></a>
{% } %}</td>
<td class="name">
<a href="{%=file.url%}" title="{%=file.name%}" rel="{%=file.thumbnail_url&&'gallery'%}" download="{%=file.name%}">{%=file.name%}</a>
</td>
<td class="size"><span>{%=o.formatFileSize(file.size)%}</span></td>
<td colspan="2"></td>
{% } %}
<td class="delete">
<button class="btn btn-danger" data-type="{%=file.delete_type%}" data-url="{%=file.delete_url%}">
<i class="icon-trash icon-white"></i>
<span>{%=locale.fileupload.destroy%}</span>
</button>
<input type="checkbox" name="delete" value="1">
</td>
</tr>
{% } %}
</script>
<!-- The jQuery UI widget factory, can be omitted if jQuery UI is already included -->
<%= javascript_include_tag 'jquery.ui.widget.js' %>
<!-- The Templates and Load Image plugins are included for the FileUpload user interface -->
<script src="https://blueimp.github.com/JavaScript-Templates/tmpl.min.js"></script>
<script src="https://blueimp.github.com/JavaScript-Load-Image/load-image.all.min.js"></script>
<!-- The Iframe Transport is required for browsers without support for XHR file uploads -->
<%= javascript_include_tag 'jquery.iframe-transport.js' %>
<%= javascript_include_tag 'jquery.fileupload.js' %>
<%= javascript_include_tag 'jquery.fileupload-ui.js' %>
<!-- add include_tag js files to config.assets.precompile in ...environments/production.rb if you have it in vendor/ assets -->
<script type="text/javascript" charset="utf-8">
$(function () {
// Initialize the jQuery File Upload widget:
$('#fileupload').fileupload();
//
// Load existing files:
$.getJSON($('#fileupload').prop('action'), function (files) {
var fu = $('#fileupload').data('blueimp-fileupload'),
template;
fu._adjustMaxNumberOfFiles(-files.length);
template = fu._renderDownload(files)
.appendTo($('#fileupload .files'));
// Force reflow:
fu._reflow = fu._transition && template.length &&
template[0].offsetWidth;
template.addClass('in');
$('#loading').remove();
});
});
</script>
于 2015-04-29T03:57:34.477 回答