Question

我的视图中有h变量，h变量：

[{"folder"=>"High Risk", "weight"=>"38.8", "stocks"=>[{"id"=>"id3", "name"=>"Indian Oil Corporation Ltd.", "weight"=>"14.4"}, {"id"=>"id5", "name"=>"Atul Auto Ltd.", "weight"=>"13.7"}, {"id"=>"id6", "name"=>"Hindustan Zinc Ltd.", "weight"=>"10.6"}]}, {"folder"=>"Expecting PE ratio", "weight"=>"42.3", "stocks"=>[{"id"=>"id7", "name"=>"Infosys Ltd.", "weight"=>"42.3"}]}, {"folder"=>"from kite", "weight"=>"12.8", "stocks"=>[{"id"=>"id8", "name"=>"Hindustan Unilever Ltd.", "weight"=>"12.8"}]}, {"folder"=>"Low Margin", "weight"=>"6.1", "stocks"=>[{"id"=>"id9", "name"=>"Jindal Steel & Power Ltd.", "weight"=>"6.1"}]}]

这是我在view.erb

中的脚本

<script>
if (top.location != location) {
       top.location.href = document.location.href ;
    }
///Some function giving 'val' value

    jQuery.ajax({
     data: 'val=' + total_span,
     dataType: 'script',
     type: 'post',
     url: "/portfolio/slide_change"
     });

    </script>

我有两个疑问：

1）我应该如何以及在哪里声明javascript中的新变量以从此文件中的ruby代码中获取h值？（将方法从ruby传递给javascript）

2）我想把这个变量也发布到反手'val'我怎么能这样做？是否有可能一次发布两个变量或者我需要将h与'val'连接起来吗？

Answer 1

您可以在ERB中使用ruby变量。假设你的erb中有可变的@stocks，你可以使用<%= @stocks.to_json %>输出它的JSON表示。所以在你的view.erb中你可以写：

<script>
if (top.location != location) {
       top.location.href = document.location.href ;
    }


    var val = <%= h.to_json %>; //rendered view will have actual array there.

    jQuery.ajax({
     data: 'val=' + total_span,
     dataType: 'script',
     type: 'post',
     url: "/portfolio/slide_change"
     });

    </script>

将Ruby变量传递给javascript以便发布

1 个答案: