https://ruby-china.org/dandan en-us <p>如题，rollback，求排错指导～</p> dandan Tue, 14 Jul 2015 19:56:51 +0800 https://ruby-china.org/topics/26480 https://ruby-china.org/topics/26480 <p>看 guides，觉得 namespace 好难懂，有大神指点一二嘛？</p> dandan Wed, 08 Jul 2015 21:16:42 +0800 https://ruby-china.org/topics/26396 https://ruby-china.org/topics/26396 <p>如题，谷歌了下找到 <a href="http://stackoverflow.com/questions/5343108/using-user-name-for-login-in-devise" rel="nofollow" target="_blank">http://stackoverflow.com/questions/5343108/using-user-name-for-login-in-devise</a></p> <p>可是不会按照这个上面改，求教，哪里找这个 base moudle?</p> dandan Tue, 07 Jul 2015 14:33:39 +0800 https://ruby-china.org/topics/26364 https://ruby-china.org/topics/26364 <p>ActionView::Template::Error (undefined method <code>model_name' for nil:NilClass): 1: &lt;div class="col-md-4 col-md-offset-4"&gt; 2: &lt;h1&gt;create&lt;/h1&gt; 3: 4: &lt;%= simple_form_for @group do |f| %&gt; 5: &lt;div class="form-group"&gt; 6: &lt;%= f.input :title, input_html: { class: "form-control"} %&gt; 7: &lt;%= f.input :description, input_html: { class: "form-control"} %&gt; app/views/groups/new.html.erb:4:in</code><u>app_views_groups_new_html_erb</u>__528623746075205267_70173123584560'</p> <p>这里的 undef method 是什么问题呢？</p> dandan Fri, 03 Jul 2015 13:12:31 +0800 https://ruby-china.org/topics/26308 https://ruby-china.org/topics/26308