我已经安装了carrierwave gem。我的模型是
class Rating < ActiveRecord::Base
attr_accessible :pic_url, :rating
mount_uploader :pic_url , ImageUploader
end
我的看法是
<%= form_for @rating, :html => {:multipart=>true} do |f| %>
<div class="field">
<%= f.file_field :pic_url %>
</div>
<div class="field">
<%= f.label :remote_pic_url_url, 'or image url' %>
<br/>
<%= f.text_field :remote_pic_url_url %>
</div>
<div class="actions">
<%= f.submit 'Upload Picture', :class => 'btn btn-primary' %>
</div>
<% end %>
Can't mass-assign protected attributes: remote_pic_url_url
当我删除可选的图片 url 字段时,我收到一条错误消息,然后它可以工作。