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我想將我的rails應用程序2.0.2升級到2.3.5。在MySQL發生許多問題之後，我的應用程序遇到了另一個大問題。移植後，Image_tag無法使用rails 2.0.2到2.3.5
這裏的問題是：
Processing UserController#profil (for 127.0.0.1 at 2009-12-26 11:47:13) [GET]
Rendering template within layouts/admin
Rendering user/profil
ActionView::TemplateError (undefined method `image_tag' for #<ActionView::Base:0x1032bef18>) on line #57 of app/views/user/profil.html.erb:
54: <div style="float: left; width: 300px;" >
55: <%= render :partial => 'shared/cadre', :locals => {:style => '', :modif => modif,
56: :title => 'AVATAR', :width => 200,
57: :display => image_tag(@userView.GetAvatar, :class => 'ie200', :style => 'max-height: 200px; max-width: 200px;') } -%>
58: <div style="position: relative;" >
59: <div class="menu-profil" >
60: <select id="menuProfil" name="my-dropdown" >
app/views/user/profil.html.erb:57
/usr/local/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
/usr/local/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
/usr/local/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
/usr/local/lib/ruby/1.8/webrick/server.rb:162:in `start'
/usr/local/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
/usr/local/lib/ruby/1.8/webrick/server.rb:95:in `start'
/usr/local/lib/ruby/1.8/webrick/server.rb:92:in `each'
/usr/local/lib/ruby/1.8/webrick/server.rb:92:in `start'
/usr/local/lib/ruby/1.8/webrick/server.rb:23:in `start'
/usr/local/lib/ruby/1.8/webrick/server.rb:82:in `start'
Rails不知道IMAGE_TAG方法，但是爲什麼呢？
我沒有發現問題。
你能幫我嗎:)
非常感謝。
這是否與每個默認的輔助方法？如果是這樣，也許你應該看看你的ApplicationController方法是否存在'helper：all'調用。 – 2009-12-26 12:19:55
這行是我的applicationController的第一行，但任何方法的工作。 – Kiva 2009-12-26 16:42:43