我正在使用主干和 rails 'paperclip' gem 实现异步照片上传:
问题:
项目.rb
class Item < ActiveRecord::Base
has_many: photos
...
照片.rb
class Photo < ActiveRecord::Base
attr_accessible :photo
belongs_to :item
has_attached_file :photo
...
ItemView.js.coffee
class MySite.Views.Items.Edit extends Backbone.View
template: JST['items/edit']
initialize: ->
@modelBinder = new Backbone.ModelBinder
@model.on('change', @render(), this)
events: ->
'submit #edit_item_form' : 'save_item'
render: ->
$(@el).html @template( item: @model )
@new_photo = @model.new_photo()
@modelBinder.bind @model, $("#item_fields")
@modelBinder.bind @new_photo, $("#photo_fields")
@
save_item: (e) ->
e.preventDefault()
@model.save()
@new_photo.save()
编辑.jst.eco
<form id="edit_item_form" accept-charset="UTF-8" data-remote="true" enctype="multipart/form-data">
<div id="item_fields"> .... </div>
<div id="photo_fields">
<input type="file" id="upload_photo" name="photo[photo]" />
</div>
...
欢迎提出整体设计改进的建议
最佳答案
我最终选择了 iframe 上传的简单性和跨浏览器支持。实现实际上非常简单:
MyView.js.coffee:
events: ->
'change #upload_photos' : 'upload_photo'
upload_photo: (e) ->
upload_frame = $('#add_photo_form')
upload_frame.prop 'target', 'upload_frame'
upload_frame.submit()
MyTemplate.jst.eco:
<form id="add_photo_form" method="POST" action="/api/v1/photos" enctype="multipart/form-data">
<div id="photo_fields">
<input type="file" id="upload_photos" name="photo[photo]" multiple>
<input type="hidden" name="authenticity_token" value="<%= $("meta[name='csrf-token']").attr("content") %>">
</div>
</form>
<iframe id='upload_frame' name='upload_frame' src=''></iframe>
请注意 CSRF token 的添加。没有它,请求将失败并清除您的 session 。
关于ruby-on-rails - Backbone + Rails 'Paperclip' 异步上传,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13100393/