最近我在我的Rails 3应用程序中安装了paperclip gem。我试图允许用户上传他们的个人资料头像。我遵循了安装说明,这是我的模型/视图的样子:
我的“user.rb”模型有以下代码:
has_attached_file :avatar,
:styles => { :small => "70x70>"},
:url => "/users/:attachment/:id/:style/:basename.:extension",
:path => ":rails_root/public/users/:attachment/:id/:style/:basename.:extension"
validates_attachment_size :avatar, :less_than => 1.megabytes
validates_attachment_content_type :avatar, :content_type => ['image/jpeg', 'image/png']
我已将以下内容添加到编辑表单html中(顺便说一下,我正在使用HAML):
= form_for (@user || User.new), :html => { :multipart => true } do |f|
...
.profile_picture.text_field
= image_tag current_profile.avatar.url(:small)
%br
= f.file_field :avatar
当我上传一张大小不超过1MB的图片(jpeg或png格式)时,一切都很顺利;图片被成功上传,没有任何错误。但是如果我尝试上传其他类型的文件(如MP3、txt等),或者上传的文件/图片大小超过1MB,Rails会给出以下错误提示:
TypeError in UsersController#update
can't dump File
Request
Parameters:
{"utf8"=>"✓",
"_method"=>"put",
"authenticity_token"=>"LaiYjEEfgsE8JzzLsfkzk6TK8D4uxzIo5ASlu6ax2rY=",
"user"=>{"avatar"=>#<ActionDispatch::Http::UploadedFile:0x000001053f0bf0 @original_filename="GT1_22HS_1_std.jpg",
@content_type="image/jpeg",
@headers="Content-Disposition: form-data; name=\"user[avatar]\"; filename=\"GT1_22HS_1_std.jpg\"\r\nContent-Type: image/jpeg\r\n",
@tempfile=#<File:/var/folders/Ud/Udv4OlryEzWrHedR8pIe1E+++TI/-Tmp-/RackMultipart20110817-17075-1ikqcc0>>,
"first_name"=>"First",
"last_name"=>"Last",
"country"=>"United States",
"state"=>"California",
"city"=>"City",
"date_of_birth(1i)"=>"2011",
"date_of_birth(2i)"=>"7",
"date_of_birth(3i)"=>"12",
"account_attributes"=>{"email"=>"email@email.com",
"id"=>"6",
"password"=>"[FILTERED]",
"password_confirmation"=>"[FILTERED]"},
"commit"=>"Save & Continue",
"id"=>"2"}
如果我提供的信息过多,请谅解。由于错误提示不够清晰,所以我决定把所有信息都提供给您,以防万一。
我想知道我的验证出了什么问题,为什么没有生成错误信息,导致应用程序崩溃。非常感谢任何对此事提供帮助的人。我真诚地感谢每一个花时间阅读这篇文章的人,并非常感谢任何帮助!谢谢!
更新:
update method form user_controller.rb:
def update
session[:user_params] ||= {}
session[:user_params].deep_merge!(params[:user]) if params[:user].present?
@user.attributes = session[:user_params]
respond_to do |format|
if @user.save
session[:user_params] = nil
sign_in(@user.account, :bypass => true)
format.html { redirect_to(root_url, :notice => 'User was successfully updated.') }
format.xml { render :xml => @user, :status => :created, :location => @user }
else
format.html { render :action => "edit", :layout => "userhome" }
format.xml { render :xml => @user.errors, :status => :unprocessable_entity }
end
end
end