use*_*061 7 ruby api paperclip ruby-on-rails-3
我正在开发一个REST API,尝试上传用户的图片:
No handler found for #<Hashie::Mash filename="user.png" head="Content-Disposition: form-data; name=\"picture\"; filename=\"user.png\"\r\nContent-Type: image/png\r\n" name="picture" tempfile=#<File:/var/folders/7g/b_rgx2c909vf8dpk2v00r7r80000gn/T/RackMultipart20121228-52105-43ered> type="image/png">
我尝试使用控制器测试回形针,但是当我尝试通过葡萄api上传时它不起作用我的帖子标题是multipart/form-data
我上传的代码就是这个
user = User.find(20)
user.picture = params[:picture]
user.save!
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因此,如果无法通过葡萄上传文件,还有其他方法可以通过REST api上传文件吗?
lis*_*i.r 17
@ ahmad-sherif解决方案可以工作,但是你放弃了original_filename(和扩展名),并且可以为probems提供预处理器和验证器.你可以ActionDispatch::Http::UploadedFile像这样使用:
desc "Update image"
params do
requires :id, :type => String, :desc => "ID."
requires :image, :type => Rack::Multipart::UploadedFile, :desc => "Image file."
end
post :image do
new_file = ActionDispatch::Http::UploadedFile.new(params[:image])
object = SomeObject.find(params[:id])
object.image = new_file
object.save
end
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也许更一致的方法是为Hashie :: Mash定义回形针适配器
module Paperclip
class HashieMashUploadedFileAdapter < AbstractAdapter
def initialize(target)
@tempfile, @content_type, @size = target.tempfile, target.type, target.tempfile.size
self.original_filename = target.filename
end
end
end
Paperclip.io_adapters.register Paperclip::HashieMashUploadedFileAdapter do |target|
target.is_a? Hashie::Mash
end
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并"透明地"使用它
user = User.find(20)
user.picture = params[:picture]
user.save!
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添加到维基 - https://github.com/intridea/grape/wiki/Uploaded-file-and-paperclip
您可以传递File您获得的对象,params[:picture][:tempfile]因为 Paperclip 有一个对象适配器File,如下所示
user.picture = params[:picture][:tempfile]
user.picture_file_name = params[:picture][:filename] # Preserve the original file name
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