Creating string from hash values

Question

I have a Hash that looks like this:

{ 'key1' => 'value1', 'key2' => ['value2', 'value3']}

And I need to create a string that will look like this:

key1/value1;key2/value2,value3

So, the pattern is key/value and ';' as separator. And if there are more than one value do value1,value2 ',' is the separator.

Here is what I have so far:

def build_string params
        url_params = ''
      params.each do |key, value|
        url_params += key
        url_params += '/'
        if value.kind_of? Array
          url_params += value.join(",") 
        else
          url_params += value
        end
        url_params += ';'
      end
      return url_params
    end

The problem is that this is adding a ';' at the end of the string, and I just want it as separator of each hash element. I have thought of doing a join(';'), but I am not sure how to do the rest of the operations beforehand.

spickermann · Accepted Answer · 2013-11-12 08:01:49Z

4

params.map { |k, v| "#{k}/#{[v].flatten.join(',')}" }.join(';')

edited Nov 12, 2013 at 8:01

spickermann

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answered Nov 12, 2013 at 5:30

Worakarn Isaratham

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