我使用jQuery文件上传，并有这样的形式：
= javascript_include_tag 'car_photos'
= stylesheet_link_tag('jquery.fileupload-ui')
= form_for @car do |f|
.tab#car-data{style: "height: 1290px;"}
.field
= f.label :manufacturer_id, "Марка"
= f.select(:manufacturer_id, options_from_collection_for_select(VehicleManufacturer.all, :id, :name, @car.manufacturer_id), {}, :prompt => "Выберите марку", required: true, id: "manufacturer-select")
.field
= f.label :model_id, "Модель"
#models-area
= render :partial => 'models', :object => @models
.field
= f.label :price, "Цена (рос.руб.)"
= f.number_field :price, required: true, min: 0, step: 1, pattern: '[0-9]*', placeholder: "Например: 390000"
.actions
= link_to 'Перейти к загрузке фотографий', "", id: "go-and-load-photos", remote: true
.tab#car-photo{style: "height: 1290px;"}
.actions
= link_to 'Назад к описанию', "", id: "go-and-load-car-data", remote: true
.actions
= f.submit 'Добавить', id: "submit-car"
.container
= form_for CarPhoto.new, :html => { :multipart => true, :id => "fileupload", remote: true } do |f|
/ The fileupload-buttonbar contains buttons to add/delete files and start/cancel the upload
.row.fileupload-buttonbar
.span7
/ The fileinput-button span is used to style the file input field as button
%span.btn.btn-success.fileinput-button
%i.icon-plus.icon-white
%span Добавить файлы
= f.file_field :car_photo, multiple: true
= tag(:input, :type => "hidden", :name => request_forgery_protection_token.to_s, :value => form_authenticity_token)
%button.btn.btn-primary.start{type: "submit", remote: true}
%i.icon-upload.icon-white
%span Загрузить
%button.btn.btn-warning.cancel{type: "reset", remote: true}
%i.icon-ban-circle.icon-white
%span Отменить загрузку
%button.btn.btn-danger.delete{type: "button", remote: true}
%i.icon-trash.icon-white
%span Удалить
%input.toggle{type: "checkbox"}/
.span5
/ The global progress bar
.progress.progress-success.progress-striped.active.fade
.bar{style: "width:0%;"}
/ The loading indicator is shown during image processing
.fileupload-loading
%br/
/ The table listing the files available for upload/download
%table.table.table-striped
%tbody.files{"data-target" => "#modal-gallery", "data-toggle" => "modal-gallery"}
: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 = $('#fileupload').data('fileupload'),
template;
fu._adjustMaxNumberOfFiles(-files.length);
console.log(files);
template = fu._renderDownload(files)
\.appendTo($('#fileupload .files'));
\// Force reflow:
fu._reflow = fu._transition && template.length &&
template[0].offsetWidth;
template.addClass('in');
$('#loading').remove();
});
});
和这样的控制器：
class CarPhotosController < ApplicationController
before_action :set_car_photo, only: [:show, :edit, :update, :destroy]
def new
@car_photo = CarPhoto.new
end
def create
@car_photo = CarPhoto.new(car_photo_params)
#binding.pry
respond_to do |format|
if @car_photo.save
format.html { redirect_to @car_photo, notice: 'Photo was successfully created.' }
format.json { data = {id: @car_photo.id, thumb: view_context.image_tag(@car_photo.car_photo.url(:thumb))}
render json: data, status: :created, location: @car_photo }
else
format.html { render action: "new" }
format.json { render json: @car_photo.errors, status: :unprocessable_entity }
end
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_car_photo
@car_photo = CarPhoto.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def car_photo_params
params.require(:car_photo).permit(:car_photo, {:car_photo => []})
end
end
当我尝试加载一些图像时，我得到：
Paperclip::AdapterRegistry::NoHandlerError in CarPhotosController#create
No handler found for [#<ActionDispatch::Http::UploadedFile:0x00000002d1af18 @tempfile=#<Tempfile:/tmp/RackMultipart20140313-3279-x4s5h2>, @original_filename="comment-it-hover.png", @content_type="image/png", @headers="Content-Disposition: form-data; name=\"car_photo[car_photo][]\"; filename=\"comment-it-hover.png\"\r\nContent-Type: image/png\r\n">]
Extracted source (around line #9):
def create
**@car_photo = CarPhoto.new(car_photo_params)**
#binding.pry
respond_to do |format|
if @car_photo.save
Request
Parameters:
{"utf8"=>"✓", "authenticity_token"=>"za/FgQrfxfn8SI3Ddbs1BtMptm67XOYgZBn+5QrvTiM=", "car_photo"=>{"car_photo"=>[#<ActionDispatch::Http::UploadedFile:0x00000002d1af18 @tempfile=#<Tempfile:/tmp/RackMultipart20140313-3279-x4s5h2>, @original_filename="comment-it-hover.png", @content_type="image/png", @headers="Content-Disposition: form-data; name=\"car_photo[car_photo][]\"; filename=\"comment-it-hover.png\"\r\nContent-Type: image/png\r\n">]}}
但是有什么不对？如何解决这个错误？
如果我更改params.require(:car_photo).permit(:car_photo, {:car_photo => []})，则会收到不允许的错误。
答案 0 :(得分：0)
在CarPhotos模型中，您是否使用has_attached_file定义了附件。
对于Paperclip从4.0.0开始，您还需要具有文件名验证和文件类型验证
答案 1 :(得分：0)
解决了这个问题：
@car_photo = CarPhoto.new(car_photo: car_photo_params[:car_photo].first)
因为multiupload我需要注意数组......