Question

我有一个如下所示的对象：

class Report
  attr_accessor :weekly_stats, :report_times

  def initialize
    @weekly_stats = Hash.new {|h, k| h[k]={}}
    @report_times = Hash.new {|h, k| h[k]={}}
    values = []
  end
end

我想循环遍历weekly_stats和report_times并对每个键进行upcase并为其赋值。

现在我有这个：

report.weekly_stats.map do |attribute_name, value|
  report.values <<
 {
    :name => attribute_name.upcase,
    :content => value ||= "Not Currently Available"
  }
end
report.report_times.map do |attribute_name, value|
  report.values <<
  {
    :name => attribute_name.upcase,
    :content => format_date(value)
  }
end
report.values

有没有办法可以在一个循环中映射每周统计数据和报告时间？

由于

Answer 1

(@report_times.keys + @weekly_stats.keys).map do |attribute_name|
  {
    :name => attribute_name.upcase,
    :content => @report_times[attribute_name] ? format_date(@report_times[attribute_name]) : @weekly_stats[attribute_name] || "Not Currently Available"
  }
end

Answer 2

如果weekly_stats中保证为nil或空字符串，report_times中有日期对象，则可以使用此信息来处理合并哈希：

merged = report.report_times.merge( report.weekly_stats )

report.values = merged.map do |attribute_name, value|
 {
    :name => attribute_name.upcase,
    :content => value.is_a?(Date) ? format_date(value) : ( value || "Not Currently Available")
  }
end

Ruby，Map，Object属性

2 个答案: