[
{entry_id: 1,field_id: 1, content: "x"},
{entry_id: 1,field_id: 2, content: "xx"},
{entry_id: 2,field_id: 1, content: "xxx"},
{entry_id: 2,field_id: 2, content: "xxxx"}
]
上面是原始数据,下面是目标结果
[
{entry_id: 1, data: {1: "x", 2: “xx”}},
{entry_id: 2, data: {1: "xxx", 2: "xxxx"}}
]
问怎么实现,想了半天头一直混混的,没想到方法,求指导,多谢。
ps:ruby + activerecord, 没有 rails,如果有需要可以加 gem