Module: Qe::ModelExtensions

Defined in:
lib/qe/model_extensions.rb

Class Method Summary collapse

Class Method Details

.next_label(prefix, labels) ⇒ Object

Helper for create a QuestionSheet or Page with the “next unused label”

labels => an array of existing label strings
prefix => the prefix that default pages/sheet have (ignores labels not matching this format)



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# File 'lib/qe/model_extensions.rb', line 7

def next_label(prefix, labels)
  max = labels.inject(0) do |max, label|
    num = label[/^#{prefix} ([0-9]+)$/i, 1].to_i   # extract your digits
    num > max ? num : max
  end

  "#{prefix} #{max.next}"
end