Class: Rulix::Validators::LengthValidator

Inherits:
Object
  • Object
show all
Defined in:
lib/rulix/validators/length_validator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = nil) ⇒ LengthValidator

Returns a new instance of LengthValidator.



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# File 'lib/rulix/validators/length_validator.rb', line 6

def initialize options = nil
  options ||= {}
  min = options[:min] || 0
  max = options[:max]

  self.exactly = options[:exactly]
  self.min = min
  self.max = max
end

Instance Attribute Details

#exactly ⇒ Object

Returns the value of attribute exactly.



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# File 'lib/rulix/validators/length_validator.rb', line 4

def exactly
  @exactly
end

#max ⇒ Object

Returns the value of attribute max.



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# File 'lib/rulix/validators/length_validator.rb', line 4

def max
  @max
end

#min ⇒ Object

Returns the value of attribute min.



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# File 'lib/rulix/validators/length_validator.rb', line 4

def min
  @min
end

Instance Method Details

#call(string) ⇒ Object 



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# File 'lib/rulix/validators/length_validator.rb', line 16

def call string
  return [false, "can't be nil"] unless string

  if exactly.nil?
    if min && max
      (min..max).cover?(string.length) || [false, error_message(string)]
    elsif min && !max
      string.length >= min || [false, error_message(string)]
    elsif max && !min
      string.length <= max || [false, error_message(string)]
    end
  else
    exactly == string.length || [false, exact_error_message]
  end
end

#error_message(string) ⇒ Object 



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# File 'lib/rulix/validators/length_validator.rb', line 36

def error_message string
  if string.length < min
    "must be at least #{min} characters long"
  elsif string.length > max
    "cannot be longer than #{max} characters"
  end
end

#exact_error_message ⇒ Object 



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# File 'lib/rulix/validators/length_validator.rb', line 32

def exact_error_message
  "must be exactly #{exactly} characters long"
end

#to_proc ⇒ Object 



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# File 'lib/rulix/validators/length_validator.rb', line 44

def to_proc
  method(:call)
end