ruby-on-rails - 如何在 ruby​​ on rails 中合并 json arry

Question

根据月份合并数据同月收入添加在自己的月份和月份名称中没有复制

[{"revenu":0,"month":"January"},
{"revenu":0,"month":"February"},
{"revenu":0,"month":"March"},
{"revenu":0,"month":"April"},
{"revenu":1832.4430203602753,"month":"May"},
{"revenu":4502.1,"month":"May"},
{"revenu":54.673303657726436,"month":"May"},
{"revenu":0,"month":"June"},
{"revenu":0,"month":"July"},
{"revenu":0,"month":"August"},
{"revenu":0,"month":"September"},
{"revenu":0,"month":"October"},
{"revenu":0,"month":"November"},
{"revenu":0,"month":"December"}]

标签： ruby-on-rails

Answer 1

new_arr = given_array.group_by{ |data| data[:month]}
new_arr.map{|key, val| {"month": key, "revenu": val.inject(0){|sum, hash| sum + hash[:revenu]}}}