attachment_fu上传图片怎么没有缩略图呢

Question

class Mugshot < ActiveRecord::Base

  has_attachment :content_type => :image,

    :storage => :file_system,

    :processor => :MiniMagick,

    :max_size => 10.megabytes,


    :resize_to => '320*200',

    :thumbnails => { :thumb => [50, 50] },

    :path_prefix => 'public/images/mugshots'

validates_as_attachment

end

<h1>New mugshot</h1>

<%= error_messages_for :mugshot %>

<% form_for(:mugshot, :url => mugshots_path,

                      :html => { :multipart => true }) do |f| -%>

  <p>

    <label for="mugshot">Upload A Mugshot:</label>

    <%= f.file_field :uploaded_data %>

  </p>

  <p>

    <%= submit_tag 'Create' %>

  </p>

<% end -%>

<%= link_to 'New mugshot', new_mugshot_path %>

<h1>Most Wanted</h1>

<% for mugshot in @mugshots -%>

  <%= link_to image_tag(mugshot.public_filename(:thumb)), mugshot.public_filename %>

<% end -%>

那个高手帮我看看怎么回事？？

Answer 1

如果用了minimagic要确保imagemagick在路径中。
convert --version 试试。
如果只是单纯制作缩略图，imagescience最好。