Class: VolumePrice

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
app/models/volume_price.rb

Constant Summary collapse

OPEN_ENDED = 
/\([0-9]+\+\)/

Instance Method Summary collapse

Instance Method Details

#include?(quantity) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/volume_price.rb', line 14

def include?(quantity)
  if open_ended?
    bound = /\d+/.match(range)[0].to_i
    return quantity >= bound
  else
    range.to_range === quantity
  end
end

#open_ended? ⇒ Boolean

indicates whether or not the range is a true Ruby range or an open ended range with no upper bound

Returns:

  • (Boolean) 


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# File 'app/models/volume_price.rb', line 24

def open_ended?
  OPEN_ENDED =~ range
end

#validate ⇒ Object 



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# File 'app/models/volume_price.rb', line 9

def validate
  return if open_ended?
  errors.add(:range, "must be in one of the following formats: (a..b), (a...b), (a+)") unless /\([0-9]+\.{2,3}[0-9]+\)/ =~ range
end