Class: ActiveModel::Validations::NumericalityValidator

Inherits:
EachValidator show all
Includes:
Comparability, ResolveValue
Defined in:
lib/active_model/validations/numericality.rb

Overview

:nodoc:

Constant Summary collapse

RANGE_CHECKS = 
{ in: :in? }
NUMBER_CHECKS = 
{ odd: :odd?, even: :even? }
RESERVED_OPTIONS = 
COMPARE_CHECKS.keys + NUMBER_CHECKS.keys + RANGE_CHECKS.keys + [:only_integer, :only_numeric]
INTEGER_REGEX = 
/\A[+-]?\d+\z/
HEXADECIMAL_REGEX = 
/\A[+-]?0[xX]/

Constants included from Comparability

Comparability::COMPARE_CHECKS

Instance Attribute Summary

Attributes inherited from EachValidator

#attributes

Attributes inherited from ActiveModel::Validator

#options

Instance Method Summary collapse

Methods included from ResolveValue

#resolve_value

Methods included from Comparability

#error_options

Methods inherited from EachValidator

#initialize, #validate

Methods inherited from ActiveModel::Validator

#initialize, kind, #kind, #validate

Constructor Details

This class inherits a constructor from ActiveModel::EachValidator

Instance Method Details

#check_validity! ⇒ Object 



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# File 'lib/active_model/validations/numericality.rb', line 22

def check_validity!
  options.slice(*COMPARE_CHECKS.keys).each do |option, value|
    unless value.is_a?(Numeric) || value.is_a?(Proc) || value.is_a?(Symbol)
      raise ArgumentError, ":#{option} must be a number, a symbol or a proc"
    end
  end

  options.slice(*RANGE_CHECKS.keys).each do |option, value|
    unless value.is_a?(Range)
      raise ArgumentError, ":#{option} must be a range"
    end
  end
end

#validate_each(record, attr_name, value, precision: Float::DIG, scale: nil) ⇒ Object 



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# File 'lib/active_model/validations/numericality.rb', line 36

def validate_each(record, attr_name, value, precision: Float::DIG, scale: nil)
  unless is_number?(value, precision, scale)
    record.errors.add(attr_name, :not_a_number, **filtered_options(value))
    return
  end

  if allow_only_integer?(record) && !is_integer?(value)
    record.errors.add(attr_name, :not_an_integer, **filtered_options(value))
    return
  end

  value = parse_as_number(value, precision, scale)

  options.slice(*RESERVED_OPTIONS).each do |option, option_value|
    if NUMBER_CHECKS.include?(option)
      unless value.to_i.public_send(NUMBER_CHECKS[option])
        record.errors.add(attr_name, option, **filtered_options(value))
      end
    elsif RANGE_CHECKS.include?(option)
      unless value.public_send(RANGE_CHECKS[option], option_value)
        record.errors.add(attr_name, option, **filtered_options(value).merge!(count: option_value))
      end
    elsif COMPARE_CHECKS.include?(option)
      option_value = option_as_number(record, option_value, precision, scale)
      unless value.public_send(COMPARE_CHECKS[option], option_value)
        record.errors.add(attr_name, option, **filtered_options(value).merge!(count: option_value))
      end
    end
  end
end