Question

当我在我的视图中运行这行代码时，

<%= image_tag(item.picture.url(:medium), :class => "iteminfo") %>

我得到了

 undefined method `symbolize_keys'

错误。我目前正在使用带有S3存储的paperclip gem。有什么建议？

- 编辑：

以下是服务器日志的内容：

Started GET "/items/compare" for 127.0.0.1 at 2012-01-19 14:47:21 -0500
Processing by ItemsController#compare as HTML
(0.1ms)  SELECT items.id FROM "items" 
Item Load (0.2ms)  SELECT "items".* FROM "items" WHERE "items"."id" IN (3, 2)
Rendered items/compare.html.erb within layouts/application (37.3ms)
Completed 500 Internal Server Error in 99ms

ActionView::Template::Error (undefined method `symbolize_keys' for #<String:0x007f9ebccd92b0>):
3: <% @items.each do |item| %>
4:  <div class="item<%= loopcount %>">
5:      <% loopcount = loopcount +1%>
6:      <%= image_tag(item.picture.url(:medium), :class => "iteminfo") %> <blockquote>     </blockquote>
7:      <h2 class = "iteminfotext"><%= item.votes %></h2>
8:      <h1 class = "iteminfotext"><%= item.location %></h1>
9:      <div class="iteminfotext"><%= button_to "Vote", :action => "vote", :id => item.id, %></div>
app/views/items/compare.html.erb:6:in `block in _   app_views_items_compare_html_erb___818922328118740053_70159882605160'
app/views/items/compare.html.erb:3:in `each'
app/views/items/compare.html.erb:3:in `  _app_views_items_compare_html_erb___818922328118740053_70159882605160'

Rendered /Users/Alex/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-  3.1.3/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.1ms)
Rendered /Users/Alex/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.1.3/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (0.8ms)
Rendered /Users/Alex/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.1.3/lib/action_dispatch/middleware/templates/rescues/template_error.erb within rescues/layout (3.8ms)

Answer 1

这是一种铁轨或回形针问题。如果你这样做

<%= image_tag(item.picture.url(:medium), :class => "iteminfo") %>

除非您将其更改为

之类的链接，否则它将无效

<%= link_to image_tag(item.picture.url(:medium), :class => "iteminfo"), item_path(item) %>

否则你总会得到

undefined method `symbolize_keys'

要避免这种情况，您只需重建图像标记块，使其看起来像这样

 <%= image_tag(item.picture.url(:medium)), :class => "iteminfo" %>

或

<%= image_tag(item.picture(:medium)), :class => "iteminfo" %>

那么你的问题就解决了

更新

<%= image_tag item.picture.url(:medium), :class => "iteminfo" %>
<%= image_tag item.picture(:medium), :class => "iteminfo" %>

带有Paperclip-Rails的Symbolize_keys问题

1 个答案: