i have a large hash and i want to get specific values in ruby

Question

So i have this large Hash :

> {"queryCost"=>1,
 "latitude"=>43.1232321,
 "longitude"=>59.3123213,
 "resolvedAddress"=>"43.1232321,59.3123213",
 "address"=>"43.1232321,59.3123213",
 "timezone"=>"Asia/Samarkand",
 "tzoffset"=>5.0,
 "days"=>[{"datetime"=>"2022-03-30",
  "datetimeEpoch"=>1648580400,
  "source"=>"obs"},
  "hours"=>
   [{"datetime"=>"00:00:00",
     "datetimeEpoch"=>1648580400,
     "source"=>"obs"},
    {"datetime"=>"01:00:00",
     "datetimeEpoch"=>1648584000,
     "source"=>"obs"},
    {"datetime"=>"02:00:00",
     "datetimeEpoch"=>1648587600,
     "source"=>"obs"},
    {"datetime"=>"03:00:00",
     "datetimeEpoch"=>1648591200,
     "source"=>"obs"},
    {"datetime"=>"04:00:00",
     "datetimeEpoch"=>1648594800,
     "source"=>"obs"},
    {"datetime"=>"05:00:00",
     "datetimeEpoch"=>1648598400,
     "source"=>"obs"},
    {"datetime"=>"06:00:00",
     "datetimeEpoch"=>1648602000,
     "source"=>"obs"}]},
   

What i want is to get all hours that are 24, i can get them manually 1 by 1, using this hash_json['days'][0]['hours'][0]['datetime] and so on chaning 0 to 24, but how can i do a loop that gets me something like this :

loop through hash

puts hash hours datatime

end

output: "00:00:00" "01:00:00" ... until it gets "24:00:00" that is the last one.

I did see some examples but they where to simple, to use them on this hash, and since im new to ruby i cant rearly get it.

Answer 1

You are trying to do too much all at once with hash_json['days'][0]['hours'][0]['datetime]. I suggest breaking this into smaller pieces. For example do days = hash_json['days']. Now you have a variable with simpler structure. In this case it is a list. You can get the first element with days[0] or loop over the list with days.each or days.map. I suggest you read about each and map to learn what they are good for and how they work.