Module: MonkeyWrench::Hash

Included in:
Hash
Defined in:
lib/monkey_wrench/hash.rb

Instance Method Summary collapse

Instance Method Details

#collect_kv ⇒ Object

Takes a block that returns a [key, value] pair and builds a new hash based on those pairs Courtesy of snuxoll.com/post/2009/02/13/ruby-better-hashcollect



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# File 'lib/monkey_wrench/hash.rb', line 8

def collect_kv
  result = {}
  each do |k,v|
    new_k, new_v = yield k, v
    result[new_k] = new_v
  end
  result
end

#collect_kv!(&blk) ⇒ Object 



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# File 'lib/monkey_wrench/hash.rb', line 17

def collect_kv!(&blk)
  replace(self.collect_kv(&blk))
end

#escape_keys! ⇒ Object 



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# File 'lib/monkey_wrench/hash.rb', line 21

def escape_keys!
  collect_kv!{|k,v| [CGI.escape(k.to_s), v]}
end

#to_mailchimp(index = nil, parent_name = nil) ⇒ Object 



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# File 'lib/monkey_wrench/hash.rb', line 25

def to_mailchimp(index = nil, parent_name = nil)
  result = self.collect_kv do |k,v|
    if v.is_a?(Array) && v.first.is_a?(Hash)
      i = 0
      v = v.inject({}) do |acc,hash|
        acc.merge!(hash.to_mailchimp(i, k))
        i += 1
        acc
      end
    elsif v.is_a?(Hash)
      if parent_name
        v = v.collect_kv do |key,val| 
          keyname = CGI.escape("#{parent_name.to_s}[#{key.to_s.upcase}]")
          [keyname, val.to_s]
        end
      else
        v = { k => v }.to_mailchimp(nil, k)
      end
    elsif v.is_a?(Array)
      results = {}
      i = 0
      v.each do |val|
        keyname = CGI.escape("#{k}[#{i}]")
        results[keyname] = val.to_s
        i += 1
      end
      v = results
    end
    k = k.to_s
    k = "[#{index}][#{k.upcase}]" if index
    k = [parent_name, k].join if k != parent_name.to_s
    [CGI.escape(k), v]
  end
  if result.detect{|k,v| v.is_a?(Hash)}
    result.values.first
  else
    result
  end
end