回形针异常:回形针::AdapterRegistry::NoHandlerError [英] Paperclip exception : Paperclip::AdapterRegistry::NoHandlerError
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问题描述
在 rails 3.2.2 中使用 Paperclip 3.0.1 时出现此错误:
Using Paperclip 3.0.1 in rails 3.2.2 I got this error:
**Paperclip::AdapterRegistry::NoHandlerError**
(No handler found for "2009-11-29-133527.jpg"):
在我的模型中,我有:
class Product < ActiveRecord::Base
...
has_many :assets
accepts_nested_attributes_for :assets
end
class Asset < ActiveRecord::Base
belongs_to :product
has_attached_file :image,
:path => ":rails_root/public/system/:attachment/:id/:style/:filename",
:url => "/system/:attachment/:id/:style/:filename",
:styles => { :medium => "300x300>", :thumb => "100x100>" }
end
异常发生在:
def create
**@product = Product.new params[:product]**
...
end
带参数:
{...,
"product"=>{"title"=>"wibble1",
**"assets_attributes"=>{"0"=>{"image"=>"2009-11-29-133527.jpg"}
},**
"description"=>"Who is wibble...",
"price"=>"23.45"
},
"commit"=>"Create Product",
...}
有人知道这是怎么回事吗?
Anyone know what's going on?
推荐答案
出现此错误是因为您没有为 Paperclip 提供正确的类.它只是一个字符串.
This Error is raised because you aren't giving Paperclip a correct class. It's a just a String.
您应该在 params
"asset"=>
{"image"=>
#<ActionDispatch::Http::UploadedFile:0x000000056679e8
@content_type="image/jpg",
@headers= "Content-Disposition: form-data; name=\"asset[image]\";
filename=\"2009-11-29-133527.jpg\"\r\nContent-Type: image/jpg\r\n",
@original_filename=""2009-11-29-133527.jpg"",
@tempfile=#<File:/tmp/RackMultipart20120619-1043-yvc9ox>>}
你应该在你的视图中有这样的东西(在 HAML 中,非常简化):
And you should have something like this in yout View (in HAML, very simplified):
= form_for @product, html: { multipart: true } do |f|
= f.fields_for :asset do |asset_form|
= asset_form.file_field :image
记得将表单设置为 multipart: true
.
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