ruby-on-rails – 在Rails中合并两个带有匹配ID的JSON

[
  {
   "course_code":"Basic 101 - 0913",
   "name":"Basic 101",
   "start_at":"2013-09-16T00:00:00+02:00",
   "end_at":"2013-10-13T23:55:00+02:00",
   "workflow_state":"available"
  },
  {"course_code":"Medium 201 - 0913",
   "name":"Medium 201",
   "start_at":"2013-08-06T16:55:25+02:00",
   "end_at":null,
   "workflow_state":"available"
  }
]

第二个是从我的数据库导出的JSON：

[
  {
   "id":1,
   "course_id":"Basic 101",
   "name":"Basic Level",
   "description":"blablabla",
   "discipline_id":"1",
   "duration":"28",
   "created_at":null,
   "updated_at":null
  },
  {
   "id":2,
   "course_id":"Medium 201",
   "name":"Medium Level",
   "description":"blablabla",
   "discipline_id":"1",
   "duration":"28",
   "created_at":null,
   "updated_at":null
  }
]

我想将这两个JSON合并为一个,在第一个JSON中匹配：name,在第二个JSON中使用：course_id.

如果你知道在Rails中使用JSON的好教程,我真的很感兴趣.

require 'json'

arr1 = JSON.parse(json1)
arr2 = JSON.parse(json2)
mrg = []
arr1.each do |el1|
  arr2.each do |el2|
    if el2['course_id'] == el1['name']
      mrg.push(el1.merge(el2))
    end
  end
end

p mrg

将打印：

[
  {
   "course_code"=>"Basic 101 - 0913",
   "name"=>"Basic Level", 
   "start_at"=>"2013-09-16T00:00:00+02:00", 
   "end_at"=>"2013-10-13T23:55:00+02:00", 
   "workflow_state"=>"available", 
   "id"=>1, 
   "course_id"=>"Basic 101", 
   "description"=>"blablabla", 
   "discipline_id"=>"1", 
   "duration"=>"28", 
   "created_at"=>nil, 
   "updated_at"=>nil
  },
  {
   "course_code"=>"Medium 201 - 0913", 
   "name"=>"Medium Level", 
   "start_at"=>"2013-08-06T16:55:25+02:00", 
   "end_at"=>nil, 
   "workflow_state"=>"available", 
   "id"=>2, 
   "course_id"=>"Medium 201", 
   "description"=>"blablabla", 
   "discipline_id"=>"1", 
   "duration"=>"28", 
   "created_at"=>nil, 
   "updated_at"=>nil
  }
]