PaperClip储蓄问题

Question

这是我的模型

class User < ActiveRecord::Base
  has_attached_file :profpic, 
                    :styles => { :medium => "300x300>", :thumb => "100x100>" }, 
                    :default_url => "/assets/blonde_user.png"
  validates_attachment_content_type :profpic, :content_type => /\Aimage\/.*\Z/ 

这是我的控制器方法

def uploadpic
  p "=========================+++++++++++++++"
  p params["user"]["profpic"]  
  # current_user.profpic  = params["user"]["profpic"]
  # current_user.profpic_file_name = params["user"]["profpic"]
  p "================================="  
  p params
  p params[:user]
  current_user.profpic = params["user"]["profpic"]
  current_user.save
  p "=================================="
  redirect_to "/profile"

  end

我的观点是

<div class="picture">
                    <%= form_for current_user, :url => '/uploadpic', :html => { :multipart => true } do |form| %>
                    <%= form.file_field :profpic %>
                        <%= image_tag current_user.profpic.url %>
                    <% end %>
                </div>

在此表单提交中，我得到了一个错误，如

Paperclip::AdapterRegistry::NoHandlerError in ProfilesController#uploadpic

在我的终端中，我得到所有打印语句的输出，如

 Parameters: {"utf8"=>"✓", "authenticity_token"=>"9J2MdO7Ok1sfP13n6R97so1W/HRI0RiDsHJYiOy6B4Q=", "user"=>{"profpic"=>"n.jpg"}}
  User Load (0.2ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 1 ORDER BY `users`.`id` ASC LIMIT 1
"=========================+++++++++++++++"
"n.jpg"
"================================="
{"utf8"=>"✓", "_method"=>"patch", "authenticity_token"=>"9J2MdO7Ok1sfP13n6R97so1W/HRI0RiDsHJYiOy6B4Q=", "user"=>{"profpic"=>"n.jpg"}, "controller"=>"profiles", "action"=>"uploadpic"}
{"profpic"=>"n.jpg"}
Completed 500 Internal Server Error in 4ms

帮助。

Answer 1

你应该换个贴。GET通常出现在form_for标记中。当它被更改为POST时，它将工作。

    <%= form_for current_user, :url => '/uploadpic', :html => { :multipart => true, :method => 'POST' } do |form| %>