CODEWITHSUNDEEP
rubyarrayshash
Richlewis
Richlewis

Reputation: 15374

Extracting Data from array of hashes Ruby

Given that I have the following array of hashes

@response =  { "0"=>{"forename_1"=>"John", "surname_1"=>"Smith"}, 
               "1"=>{"forename_1"=>"Chris", "surname_1"=>"Jenkins"}, 
               "2"=>{"forename_1"=>"Billy", "surname_1"=>"Bob"},
               "Status" => 100
             }

I am looking to create an array of the forename_1 and surname_1 values combined, so desired output would be

["John Smith", "Chris Jenkins", "Billy Bob"]

So I can get this far, but need further assistance

# Delete the Status as not needed
@response.delete_if { |k| ["Status"].include? k }

@response.each do |key, value|
  puts key
  #This will print out 0 1 2
  puts value
  # This will print {"forename_1"=>"John", "surname_1"=>"Smith"}, "{"forename_1"=>"Chris", "surname_1"=>"Jenkins"}, "{"forename_1"=>"Billy", "surname_1"=>"Bob"}
  puts value.keys
 # prints ["forename_1", "surname_1"], ["forename_1", "surname_1"], ["forename_1", "surname_1"] 
  puts value.values
  # prints ["John", "Smith"], ["Chris", "Jenkins"], ["Billy", "Bob"] 
  value.map { |v| v["forename_1"] }
  # However i get no implicit conversion of String into Integer error
end

What am i doing wrong here?

Thanks

Upvotes: 1

Views: 69

Answers (3)

toro2k
toro2k

Reputation: 19230

What you have to do is to get the values of the @response hash, filter out what is not an instance of Hash, and then join together the forename and the surname, I would do something like this:

@response.values.grep(Hash).map { |h| "#{h['forename_1']} #{h['surname_1']}" }
# => ["John Smith", "Chris Jenkins", "Billy Bob"]

Upvotes: 1

jon snow
jon snow

Reputation: 3072

Another way : 

@response.values.grep(Hash).map { |t| t.values.join(' ')}

Upvotes: 2

Saurabh
Saurabh

Reputation: 73589

@response.values.map{ |res| 
   [res["forename_1"] , res["surname_1"]].join(' ')  if res.is_a?(Hash)  
}.compact

Upvotes: 1

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