common ruby extensions

hash_extensions.rb

class Hash
  #example:
  # emp = {:name => "Khaja Minhajuddin", :dob => {:day => 26, :month => "January", :year => 1985}}
  # puts emp.to_html_table
  # => "<table><tr><td>name</td><td>Khaja Minhajuddin</td></tr><tr><td>dob</td><td><table><tr><td>day</td><td>26</td></tr><tr><td>month</td><td>January</td></tr><tr><td>year</td><td>1985</td></tr></table></td></tr></table>"

  def to_html_table
    output_html = "<table>"
    self.each do |key, value|
      value_html = value.is_a?(Hash) ? value.to_html_table : value
      output_html << "<tr><td>#{key}</td><td>#{ value_html }</td></tr>"
    end
    output_html << "</table>"
  end
end