Ruby：根据多个标准从深度嵌套的JSON结构中提取

问题描述

我想选择 marketName =='Moneyline'的任何 marketId ，但只有那些 countryCode =='US'|| 'GB'或 eventName.include？（'@'）。 （ @ 之前和之后的 space ）。我尝试了不同的map和组合，但有些节点没有 countryCode ，这对我来说很复杂。 是源代码，但是它可能是这样的样本： GBP，
eventTypes=> [
{eventTypeId=> 7522，
eventNodes=> [
{eventId=> 28024331，
event=>
{eventName=>EWE Baskets Oldenburg v PAOK Thessaloniki BC
}，
marketNodes=> [
{marketId=>1.128376755 ，
description=>
{marketName=>Moneyline}
}，
{marketId=>1.128377853，
description=>
{marketName=>Start Lublin +7.5}
}}}}}，
{eventId=> 28023434，
event=> ;
{eventName=>Asseco Gdynia v Start Lublin，
countryCode=>PL，
}，
marketNodes=>
[{marketId=>1.128377853，ETC ...

解决方案

基于此前，您只需要在eventNodes上添加一个选择：

 需要'json'
 
 json = File.read（'data.json'）
 hash = JSON.parse（json）
 
 moneyline_market_ids = hash [事件类型]地图{|。类型| 
 type [eventNodes]。select {| event_node | 
 ['US'，'GB']。include？（event_node [event] [countryCode]）|| event_node [event] [eventName]。include？（'@'）
} .map {| event | 
事件[marketNodes]。select {| market | 
 market [description] [marketName] =='Moneyline'
} .map {| market | 
 market [marketId] 
} 
} 
} .flatten 
 
 puts moneyline_market_ids.join（'，'）
＃= > 1.128255531，1.128272164，1.128255516，1.128272159，1.128278718，1.128272176，1.128272174，1.128272169，1.128272148，1.128272146，1.128255464，1.128255448，1.128272157，1.128272155，1.128255499，1.128272153，1.128255484，1.128272150，1.128255748，1.128272185，1.128278720，1.128272183，1.128272178，1.128255729，1.128360712， 1.128255371，1.128255433，1.128255418，1.128255403，1.128255387 
  

如果您想保留国家代码和名称信息id：

  moneyline_market_ids = hash [eventTypes]。map {| type | 
 type [eventNodes]。map {| event_node | 
 [event_node，event_node [event] [countryCode]，event_node [event] [eventName]] 
} .select {| _，country，event_name | 
 ['US'，'GB']。include？（country）|| event_name.include？（'@'）
} .map {| event，country，event_name | 
事件[marketNodes]。select {| market | 
 market [description] [marketName] =='Moneyline'
} .map {| market | 
 [market [marketId]，country，event_name] 
} 
} 
} .flatten（2）
 
需要'pp'
 pp moneyline_market_ids 
＃=> [[1.128255531，美国，费城@西雅图]，
＃[1.128272164，美国，阿肯色州@密西西比州]，
＃[1.128255516，美国，新英格兰@旧金山]，
＃[1.128272159，US，Indiana @ Michigan]，
＃[1.128278718，CA，渥太华]，
＃[1.128272176，US，Arizona State @ Washington]，
＃[1.128272174，US，Alabama A& M @ Auburn 
＃... 
  

I want to select any marketId of marketName == 'Moneyline' but only those with countryCode == 'US' || 'GB' OR eventName.include?(' @ '). (space before and after the @). I tried different combos of map and select but some nodes don't have countryCode which complicates things for me. This is the source, but a sample of what it might look like:

{"currencyCode"=>"GBP",
"eventTypes"=>[
    {"eventTypeId"=>7522,
    "eventNodes"=>[
        {"eventId"=>28024331,
        "event"=>
            {"eventName"=>"EWE Baskets Oldenburg v PAOK Thessaloniki BC"
            },
            "marketNodes"=>[
                {"marketId"=>"1.128376755",
                "description"=>
                    {"marketName"=>"Moneyline"}
                },
                {"marketId"=>"1.128377853",
                "description"=>
                    {"marketName"=>"Start Lublin +7.5"}
                }}}]},
        {"eventId"=>28023434,
        "event"=>
            {"eventName"=>"Asseco Gdynia v Start Lublin",
            "countryCode"=>"PL",
            },
            "marketNodes"=>
                [{"marketId"=>"1.128377853", ETC...

解决方案

Based on this previous answer, you just need to add a select on eventNodes :

require 'json'

json = File.read('data.json')
hash = JSON.parse(json)

moneyline_market_ids = hash["eventTypes"].map{|type|
  type["eventNodes"].select{|event_node|
    ['US', 'GB'].include?(event_node["event"]["countryCode"]) || event_node["event"]["eventName"].include?(' @ ')
  }.map{|event|
    event["marketNodes"].select{|market|
      market["description"]["marketName"] == 'Moneyline'
    }.map{|market|
      market["marketId"]
    }
  }
}.flatten

puts moneyline_market_ids.join(', ')
#=> 1.128255531, 1.128272164, 1.128255516, 1.128272159, 1.128278718, 1.128272176, 1.128272174, 1.128272169, 1.128272148, 1.128272146, 1.128255464, 1.128255448, 1.128272157, 1.128272155, 1.128255499, 1.128272153, 1.128255484, 1.128272150, 1.128255748, 1.128272185, 1.128278720, 1.128272183, 1.128272178, 1.128255729, 1.128360712, 1.128255371, 1.128255433, 1.128255418, 1.128255403, 1.128255387

If you want to keep the country code and name information with the id:

moneyline_market_ids = hash["eventTypes"].map{|type|
  type["eventNodes"].map{|event_node|
    [event_node, event_node["event"]["countryCode"], event_node["event"]["eventName"]]
  }.select{|_, country, event_name|
    ['US', 'GB'].include?(country) || event_name.include?(' @ ')
  }.map{|event, country, event_name|
    event["marketNodes"].select{|market|
      market["description"]["marketName"] == 'Moneyline'
    }.map{|market|
      [market["marketId"],country,event_name]
    }
  }
}.flatten(2)

require 'pp'
pp moneyline_market_ids
#=> [["1.128255531", "US", "Philadelphia @ Seattle"],
#   ["1.128272164", "US", "Arkansas @ Mississippi State"],
#   ["1.128255516", "US", "New England @ San Francisco"],
#   ["1.128272159", "US", "Indiana @ Michigan"],
#   ["1.128278718", "CA", "Edmonton @ Ottawa"],
#   ["1.128272176", "US", "Arizona State @ Washington"],
#   ["1.128272174", "US", "Alabama A&M @ Auburn"],
#    ...

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