Module: ActiveSupport::CoreExtensions::Array::Conversions

Included in:
Array
Defined in:
lib/active_support/core_ext/array/conversions.rb

Overview

Enables to conversion of Arrays to human readable lists. [‘one’, ‘two’, ‘three’] => “one, two, and three”

Instance Method Summary collapse

Instance Method Details

#to_param ⇒ Object

When an array is given to url_for, it is converted to a slash separated string.



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# File 'lib/active_support/core_ext/array/conversions.rb', line 24

def to_param
  join '/'
end

#to_sentence(options = {}) ⇒ Object

Converts the array to comma-seperated sentence where the last element is joined by the connector word. Options:

  • :connector: The word used to join the last element in arrays with more than two elements (default: “and”)

  • :skip_last_comma: Set to true to return “a, b and c” instead of “a, b, and c”.



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# File 'lib/active_support/core_ext/array/conversions.rb', line 9

def to_sentence(options = {})
  options.assert_valid_keys(:connector, :skip_last_comma)
  options.reverse_merge! :connector => 'and', :skip_last_comma => false
  
  case length
    when 1
      self[0]
    when 2
      "#{self[0]} #{options[:connector]} #{self[1]}"
    else
      "#{self[0...-1].join(', ')}#{options[:skip_last_comma] ? '' : ','} #{options[:connector]} #{self[-1]}"
  end
end