Ruby/ RoR - String Hash to Integer Hash

Question

I have an Hash @answers = params[:Answers].to_hash;

<%= debug @answers %> outs

--- 
"1": "2"
"7": "3"
"6": "4"
"4": "0"

Need to make the @answers to one like below

@ans = {1 => 2, 7 => 3, 6 => 4, 4 => 0} <%= debug @answers %> outs

--- 
1: 2
7: 3
6: 4
4: 0

Why do you want that ? It's a debug so it's like you do p no puts — shingara
– shingara, Commented Dec 21, 2010 at 10:16
P: debug, in a Rails view, formats its argument into yaml. — Wayne Conrad
– Wayne Conrad, Commented Dec 21, 2010 at 10:30

Vasily Reys · Accepted Answer · 2010-12-21 11:07:44Z

11

Black magic wizard reporting in:

answers = {"1" => "2", "3" => "4"}
Hash[*answers.to_a.flatten.map(&:to_i)] # => {1=>2, 3=>4}

answered Dec 21, 2010 at 11:07

Vasily Reys

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1 Comment

double tested on ruby 1.8.7 and 1.9.2 . Make sure that "*" is present and answers is not empty

Raghu · Accepted Answer · 2010-12-21 10:29:13Z

3

Here is the code

@ans = {"1" => "2", "7" => "3", "6" => "4", "4" => "0"}
@foo_hash ={} #new_hash
@ans.each_pair{|k,v| @foo_hash.store(k.to_i,v.to_i)}

The @foo_hash will be {1 => 2, 7 => 3, 6 => 4, 4 => 0}

Then you can <%= debug @foo_hash %> to get the output in your YAML format

answered Dec 21, 2010 at 10:29

Raghu

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