我有一个创建产品页面，里面有一张嵌套的创建照片。照片属于产品，产品有很多照片。我正在使用jQuery 文件上传插件，但它要求您在上传后点击保存。这是一个问题，因为它在我的产品表单中，没有产品我无法保存照片。所以这就是我点击保存时发生的事情。“内部服务器错误！” （以上创建产品）
这就是控制台输出的内容！
控制台错误
Started POST "/products" for 127.0.0.1 at 2013-07-02 15:01:38 -0400
Processing by ProductsController#create as JSON
Parameters: {"utf8"=>"✓", "authenticity_token"=>"z5BnHkHTqPZGKt+uWQs10wUEKkGlphXth0rqM82tjR0=", "product"=>{"name"=>"", "description"=>"", "condition"=>"", "quantity"=>"", "price"=>"", "ship_method"=>"", "ship_price"=>"", "photos_attributes"=>{"0"=>{"image"=>#<ActionDispatch::Http::UploadedFile:0x9699c3c @original_filename="eye.jpg", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"product[photos_attributes][0][image]\"; filename=\"eye.jpg\"\r\nContent-Type: image/jpeg\r\n", @tempfile=#<File:/tmp/RackMultipart20130702-5814-cu2g3o>>}}}}
User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."auth_token" = 'eQOQkRRSnzfA51iiDQ-90w' LIMIT 1
Command :: identify -format '%wx%h,%[exif:orientation]' '/tmp/eye20130702-5814-12toyjt.jpg[0]'
Command :: identify -format %m '/tmp/eye20130702-5814-12toyjt.jpg[0]'
Command :: identify -format %m '/tmp/eye20130702-5814-12toyjt.jpg[0]'
Command :: identify -format %m '/tmp/eye20130702-5814-12toyjt.jpg[0]'
Command :: convert '/tmp/eye20130702-5814-12toyjt.jpg[0]' -auto-orient -resize "320x240>" '/tmp/eye20130702-5814-12toyjt20130702-5814-vpw0ed'
Command :: file -b --mime '/tmp/eye20130702-5814-12toyjt20130702-5814-vpw0ed'
Command :: identify -format '%wx%h,%[exif:orientation]' '/tmp/eye20130702-5814-12toyjt.jpg[0]'
Command :: identify -format %m '/tmp/eye20130702-5814-12toyjt.jpg[0]'
Command :: identify -format %m '/tmp/eye20130702-5814-12toyjt.jpg[0]'
Command :: identify -format %m '/tmp/eye20130702-5814-12toyjt.jpg[0]'
Command :: convert '/tmp/eye20130702-5814-12toyjt.jpg[0]' -auto-orient -resize "100x100>" '/tmp/eye20130702-5814-12toyjt20130702-5814-b835qy'
Command :: file -b --mime '/tmp/eye20130702-5814-12toyjt20130702-5814-b835qy'
Rendered products/new.js.erb (5.2ms)
Completed 500 Internal Server Error in 806ms
AbstractController::DoubleRenderError (Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like "redirect_to(...) and return".):
app/controllers/products_controller.rb:34:in `block (2 levels) in create'
app/controllers/products_controller.rb:32:in `create'
Rendered /home/alain/.rvm/gems/ruby-1.9.3-head/gems/actionpack-3.2.13/lib/action_dispatch/middleware/templates/rescues/_trace.erb (39.6ms)
Rendered /home/alain/.rvm/gems/ruby-1.9.3-head/gems/actionpack-3.2.13/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (2.2ms)
Rendered /home/alain/.rvm/gems/ruby-1.9.3-head/gems/actionpack-3.2.13/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (52.8ms)
新产品页面 (HAML)
= form_for @product,:url => products_path, :html => { :id => "fileupload", :multipart => true } do |f|
%p
= f.label :name
= f.text_field :name
%p
= f.label :description
= f.text_field :description
%p
= f.label :condition
= f.text_field :condition
%p
= f.select :quantity, [['Quantity', nil], '1', '2', '3', '4', '5', '6', '7', '8', '9', '10']
%p
= f.label :price
= f.text_field :price, class: "auto", data: { a_sign: "$ " }
%p
=f.select :ship_method, [['Shipping', nil], 'usps', 'ups', 'fedex']
%p
= f.label :ship_price
= f.text_field :ship_price, class: "auto", data: { a_sign: "$ " }
%p
= f.fields_for :photos do |fp|
=fp.file_field :image
%br
.files{"data-target" => "#modal-gallery", "data-toggle" => "modal-gallery"}
%p.button
= f.submit
:javascript
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'
};
/ The template to display files available for upload
%script#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>
{% } %}
/ The template to display files available for download
%script#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{:charset => "utf-8", :type => "text/javascript"}
$(function () {
// Initialize the jQuery File Upload widget:
$('#fileupload').fileupload();
//
// Load existing files:
$.getJSON($('#fileupload').prop('action'), function (files) {
var fu = $('#fileupload').data('blueimpFileupload'),
template;
fu._adjustMaxNumberOfFiles(-files.length);
console.log(files);
template = fu._renderDownload(files)
.appendTo($('#fileupload .files'));
// Force reflow:
fu._reflow = fu._transition && template.length &&
template[0].offsetWidth;
template.addClass('in');
$('#loading').remove();
});
});
产品控制器
def new
@product = Product.new
@photo = Photo.new
@product.photos.build
end
def create
@product = current_user.products.new(params[:product])
@photo = current_user.photos.new(params[:photo])
if @product.valid?
@product.save
@photo.product_id = @product.id
@photo.save
render "show", :notice => "Sale created!"
else
@product.photos.build
render "new", :notice => "Somehting went wrong!"
end
respond_to do |format|
format.html
format.json { render json: @photo }
end
end
我到底应该怎么做？