ruby - 将哈希数组分组为数组的哈希数组？

Question

我正在尝试用 ruby​​ 进行数据操作。

给定这个哈希数组

peepz = [
{
  :name => 'ted',
  :phone => '555-1234',
  :color => 'red'
},
{
  :name => 'bill',
  :phone => '555-2222',
  :color => 'green'
},
{
  :name => 'ted',
  :phone => '555-3333',
  :color => 'orange'
},
{
  :name => 'dan',
  :phone => '555-7777',
  :color => 'violet'
},
{
  :name => 'ted',
  :phone => '555-4444',
  :color => 'yellow'
},
{
  :name => 'dan',
  :phone => '555-6666',
  :color => 'orange'
}
];

我想要这个输出

peepz2 = [
  {
    :name => 'ted'
    :phone => ['555-1212','555-3333','555-4444']
    :color => ['red','orange','yellow']
  },
  {
    :name => 'bill'
    :phone => ['555-2222']
    :color => ['green']
  },
  {
    :name => 'dan'
    :phone => ['555-7777','555-6666']
    :color => ['violet','orange']
  },
]

这是我目前所拥有的。

def groupbyer ( peepz, *fields )
    peepz.groupby do |peep|
      key = ''
      fields.each do |field|
        key += peep[field].to_s
      end
    end.each do |group|
      ????
    end
end

groupbyer(peepz, :name)

必须推广此方法。它不能对 peepz 的字段进行硬编码

完成这个的好的 ruby​​ 方法是什么？

Answer 1

peepz
.group_by{|h| h[:name]}.values
.map{|a| a.inject{|h1, h2| h1.merge(h2){|k, v1, v2| k == :name ? v1 : [*v1, v2]}}}