Question

我有一个类似于Ruby的Ruby数组：

[{:tour_no=>1, :occupied=>143, :signs_of_life=>133, :unoccupied=>166, :unusable=>136},
 {:tour_no=>2, :occupied=>145, :signs_of_life=>171, :unoccupied=>166, :unusable=>136}]

我想在JavaScript数组中输出:tour_no的值以使用图表库。

这是我通过将一些Ruby代码嵌入到我的HAML模板中尝试的内容：

categoryAxis: {
      categories: [#{occupancy_by_tour.each do |tour| tour[:tour_no] end}], 
      majorGridLines: {
          visible: false
      }
  },

我想要的（在JavaScript中）：

categoryAxis: {
    categories: [1, 2], // Set the tour counts for a survey here.
    majorGridLines: {
        visible: false
    }
}

我目前得到的是什么：

categoryAxis: {
    categories: [[{:tour_no=>1, :occupied=>143, :signs_of_life=>133, :unoccupied=>166, :unusable=>136}, {:tour_no=>2, :occupied=>145, :signs_of_life=>171, :unoccupied=>117, :unusable=>145}, {:tour_no=>3, :occupied=>136, :signs_of_life=>147, :unoccupied=>152, :unusable=>143}, {:tour_no=>4, :occupied=>141, :signs_of_life=>138, :unoccupied=>128, :unusable=>171}, {:tour_no=>5, :occupied=>150, :signs_of_life=>131, :unoccupied=>149, :unusable=>148}, {:tour_no=>6, :occupied=>137, :signs_of_life=>128, :unoccupied=>163, :unusable=>150}]],
    majorGridLines: {
        visible: false
    }

}

为什么each阻止输出JavaScript数组中的整个哈希内容？

Answer 1

您需要使用map函数将块中的每个值返回到模板：

categoryAxis: {
    categories: #{occupancy_by_tour.map {|tour| tour[:tour_no]}},
    majorGridLines: {
        visible: false
    }
},

如何在JavaScript数组中的hash中输出值？

1 个答案: