Ruby on rails 解析JSON以存储在RubyonRails数据库中

字符串的格式如下所示

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allele","parameters":{"drakeId":1,"oldAlleles":"a:T,b:T,a:m,b:M,a:W,b:W,a:h,b:h,a:C,b:C,a:B,b:B,a:fl,b:fl,a:hl,b:hl,a:A1,b:A1,a:D,b:D,a:Bog,b:Bog,a:rh,b:rh","newAlleles":"a:T,b:T,a:m,b:M,a:W,b:w,a:h,b:h,a:C,b:C,a:B,b:B,a:fl,b:fl,a:hl,b:hl,a:A1,b:A1,a:D,b:D,a:Bog,b:Bog,a:rh,b:rh"}},{"session":"e8a14c99-b18a-20a5-1d7e-cea199a1f605","time":1393246903972,"prettyTime":"Mon Feb 24 2014 08:01:43 GMT-0500 (EST)","timeDrift":-18000716,"event":"Changed allele","parameters":{"drakeId":1,"oldAlleles":"a:T,b:T,a:m,b:M,a:W,b:w,a:h,b:h,a:C,b:C,a:B,b:B,a:fl,b:fl,a:hl,b:hl,a:A1,b:A1,a:D,b:D,a:Bog,b:Bog,a:rh,b:rh","newAlleles":"a:T,b:T,a:m,b:M,a:w,b:w,a:h,b:h,a:C,b:C,a:B,b:B,a:fl,b:fl,a:hl,b:hl,a:A1,b:A1,a:D,b:D,a:Bog,b:Bog,a:rh,b:rh"}},{"session":"e8a14c99-b18a-20a5-1d7e-cea199a1f605","time":1393246907580,"prettyTime":"Mon Feb 24 2014 08:01:47 GMT-0500 (EST)","timeDrift":-18000716,"event":"Changed 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Feb 24 2014 08:01:58 GMT-0500 (EST)","timeDrift":-18000716,"event":"Started challenge","parameters":{"title":"Case 7: Challenge 2","route":"case7/challenge2","case":7,"challenge":2}},{"session":"e8a14c99-b18a-20a5-1d7e-cea199a1f605","time":1393246918195,"prettyTime":"Mon Feb 24 2014 08:01:58 GMT-0500 (EST)","timeDrift":-18000716,"event":"Closed info"},{"session":"e8a14c99-b18a-20a5-1d7e-cea199a1f605","time":1393246918492,"prettyTime":"Mon Feb 24 2014 08:01:58 GMT-0500 (EST)","timeDrift":-18000716,"event":"Changed allele","parameters":{"drakeId":2,"oldAlleles":"a:T,b:T,a:m,b:m,a:w,b:W,a:h,b:h,a:C,b:C,a:B,b:B,a:Fl,b:fl,a:hl,b:hl,a:A1,b:A1,a:D,a:Bog,a:rh","newAlleles":"a:T,b:T,a:m,b:m,a:w,b:w,a:h,b:h,a:C,b:C,a:B,b:B,a:fl,b:fl,a:hl,b:hl,a:A1,b:A1,a:D,a:Bog,a:rh"}},{"session":"e8a14c99-b18a-20a5-1d7e-cea199a1f605","time":1393246918713,"prettyTime":"Mon Feb 24 2014 08:01:58 GMT-0500 (EST)","timeDrift":-18000716,"event":"Closed info"},{"session":"e8a14c99-b18a-20a5-1d7e-cea199a1f605","time":1393246918746,"prettyTime":"Mon Feb 24 2014 08:01:58 GMT-0500 (EST)","timeDrift":-18000716,"event":"Opened info"},{"session":"e8a14c99-b18a-20a5-1d7e-cea199a1f605","time":1393246932466,"prettyTime":"Mon Feb 24 2014 08:02:12 GMT-0500 (EST)","timeDrift":-18000716,"event":"Closed info"}

现在，我想解析它并将记录存储在数据库中。如何有效地解析它，以及什么是存储参数的好方法？

只需使用

例如：

require 'json'

string = '{"session":"a24186c2-5536-1734-42cc-3eb50e625964","time":1392862093110}'
JSON.parse(string)
# => {"session"=>"a24186c2-5536-1734-42cc-3eb50e625964", "time"=>1392862093110}

更新

根据您的意见，请执行以下操作：

require 'json'

string = '[{"session":"a24186c2-5536-1734-42cc-3eb50e625964","time":1392862093110},{"sessi‌​on":"a24186c2-5536-1734-42cc-3eb50e625964","time":1392862093110}]'

array = JSON.parse(string)
# => [{"session"=>"a24186c2-5536-1734-42cc-3eb50e625964",
#      "time"=>1392862093110},
#     {"sessi‌​on"=>"a24186c2-5536-1734-42cc-3eb50e625964",
#      "time"=>1392862093110}]

array.each do |a|
  # your code
  puts a
end

# >> {"session"=>"a24186c2-5536-1734-42cc-3eb50e625964", "time"=>1392862093110}
# >> {"sessi‌​on"=>"a24186c2-5536-1734-42cc-3eb50e625964", "time"=>1392862093110}

---

但是我应该如何分割数据以分离单独的json对象呢？@Peeyush您现在已经从json字符串中获得了哈希对象。现在您可以使用Ruby的HashAPI了……让我试着澄清一下。假设数据是{code>{“session”：“a24186c2-5536-1734-42cc-3eb50e625964”，“time”：1392862093110}，{“session”：“a24186c2-5536-1734-42cc-3eb50e625964”，“time”：1392862093110}如何将其中的两部分分开？感谢您的帮助。这管用！现在，我应该如何访问特定a的会话值<代码>一个[会话]似乎不起作用。

require 'json'

string = '[{"session":"a24186c2-5536-1734-42cc-3eb50e625964","time":1392862093110},{"sessi‌​on":"a24186c2-5536-1734-42cc-3eb50e625964","time":1392862093110}]'

array = JSON.parse(string)
# => [{"session"=>"a24186c2-5536-1734-42cc-3eb50e625964",
#      "time"=>1392862093110},
#     {"sessi‌​on"=>"a24186c2-5536-1734-42cc-3eb50e625964",
#      "time"=>1392862093110}]

array.each do |a|
  # your code
  puts a
end

# >> {"session"=>"a24186c2-5536-1734-42cc-3eb50e625964", "time"=>1392862093110}
# >> {"sessi‌​on"=>"a24186c2-5536-1734-42cc-3eb50e625964", "time"=>1392862093110}