javascript - Rails 不会以 json 格式输出数据

Question

这让我发疯

我需要链接格式为

links = [{source: 1, target: 2}, {..}, ...]

控制器代码：

  @edges = []
     Follow.where("followable_type= 'User'").map do |x|
      @edges << {source: x.follower_id, target: x.followable_id}
     end

查看代码（在 javascript 内）：

var links = [(<%= @edges.to_json %>)];

html源代码中的输出是

var links = [([{"source":2,"target":3},{"source":2,"target":1},{"source":8,"target":1},{"source":1,"target":8},{"source":17,"target":13},{"source":8,"target":13},{"source":8,"target":3},{"source":13,"target":3},{"source":3,"target":2},{"source":39,"target":13},{"source":3,"target":39},{"source":15,"target":1},{"source":1,"target":15},{"source":3,"target":1},{"source":3,"target":8},{"source":3,"target":13},{"source":21,"target":3},{"source":13,"target":21},{"source":13,"target":39},{"source":21,"target":13},{"source":21,"target":27},{"source":27,"target":13},{"source":1,"target":3},{"source":1,"target":39},{"source":1,"target":2},{"source":1,"target":13},{"source":1,"target":21},{"source":1,"target":27}])];

所以我想我应该把 html_safe 放在那里..这给了

var links = [([{"source":2,"target":3},{"source":2,"target":1},{"source":8,"target":1},{"source":1,"target":8},{"source":17,"target":13},{"source":8,"target":13},{"source":8,"target":3},{"source":13,"target":3},{"source":3,"target":2},{"source":39,"target":13},{"source":3,"target":39},{"source":15,"target":1},{"source":1,"target":15},{"source":3,"target":1},{"source":3,"target":8},{"source":3,"target":13},{"source":21,"target":3},{"source":13,"target":21},{"source":13,"target":39},{"source":21,"target":13},{"source":21,"target":27},{"source":27,"target":13},{"source":1,"target":3},{"source":1,"target":39},{"source":1,"target":2},{"source":1,"target":13},{"source":1,"target":21},{"source":1,"target":27}])];

哪个更好，但是每个键都是一个字符串..我需要它不是字符串

我怎样才能使这项工作？是控制器的问题还是视图的问题？

Answer 1

JSON 中没有符号的概念（如 Ruby 中）。密钥必须是 JSON 中的字符串。在您的情况下，您似乎不需要密钥。你可以只拥有一个追随者 ID 和可追随者 ID 的数组。