预编译时未找到 javascript 资产中的路由辅助方法

Question

我正在使用依赖于路由辅助方法的 javascript 资产开发 Rails 项目。

在我的.js.erb 中，我的开头是：

 <% environment.context_class.instance_eval { include Rails.application.routes.url_helpers } %>

然后自己编写javascript：

  jQuery("#search_keyword")
  .bind("keydown", function(event) {
        if(event.keyCode === jQuery.ui.keyCode.TAB &&
           jQuery(this).data("ui-autocomplete").menu.active) {
                   event.preventDefault();
            }
  })
  .autocomplete({
        source: function (request, response) {
                jQuery.getJSON ( '<%= search_complete_belongings_path(:json) %>', {
                             term: extractLast (request.term)
                          }, response);
        },
        search: function() {
                var term = extractLast (this.value);
                if (term.length < 2) {
                   return false;
                }
        },
        focus: function(event, ui) {
            return false;
        },
        select: function(event, ui) {
            var terms = split (this.value);
            terms.pop(),
            terms.push(ui.item.belonging.name);
            this.value=terms;
            return false;
        }
    })
    .data( "ui-autocomplete" )._renderItem = function( ul, item ) {
        return $( "<li>" )
            .data( "item.autocomplete", item.belonging )
            .append( "<a>" + item.belonging.name + "</a>" )
            .appendTo( ul );
    };

此函数依赖 jquery-ui 来实现自动完成功能，并对以下路由进行 ajax 调用：

<%= search_complete_belongings_path(:json) %>

代码在 dev 中运行良好，但是一旦我执行assets:precompile，我收到以下错误：

   NoMethodError: undefined method `search_complete_belongings_path' for #<#<Class:0x0000000279df18>:0x00000003813730>
   (in /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/app/assets/javascripts/belonging.js.erb)
   /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/app/assets/javascripts/belonging.js.erb:82:in `block in singletonclass'
   /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/app/assets/javascripts/belonging.js.erb:65531:in `instance_eval'
   /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/app/assets/javascripts/belonging.js.erb:65531:in `singletonclass'
   /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/app/assets/javascripts/belonging.js.erb:65529:in `__tilt_4820660'
   /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/vendor/bundle/ruby/1.9.1/gems/tilt-1.4.1/lib/tilt/template.rb:170:in `call'
   /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/vendor/bundle/ruby/1.9.1/gems/tilt-1.4.1/lib/tilt/template.rb:170:in `evaluate'
   /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/vendor/bundle/ruby/1.9.1/gems/tilt-1.4.1/lib/tilt/template.rb:103:in `render'
   /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/vendor/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/context.rb:193:in `block in evaluate'
   /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/vendor/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/context.rb:190:in `each'
   /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/vendor/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/context.rb:190:in `evaluate'
   /tmp/build_d1c6dfa1-0995-4df1-9abe-74874ab13cb0/vendor/bundle/ruby/1.9.1/gems/sprockets-2.2.2/lib/sprockets/processed_asset.rb:12:in `initialize'

不知道它来自哪里？

谢谢！

Answer 1

你不能使用助手，比如app/assets 中的search_complete_belongings_path，因为它们是动态的并且只能在rails 视图中工作。另一方面，您的资产是静态的，并且预编译一次