Class: ActiveModel::Validations::NumericalityValidator

Inherits:
EachValidator show all
Defined in:
activemodel/lib/active_model/validations/numericality.rb

Constant Summary collapse

CHECKS = 
{ :greater_than => :>, :greater_than_or_equal_to => :>=,
:equal_to => :==, :less_than => :<, :less_than_or_equal_to => :<=,
:odd => :odd?, :even => :even? }.freeze
RESERVED_OPTIONS = 
CHECKS.keys + [:only_integer]

Instance Attribute Summary

Attributes inherited from EachValidator

#attributes

Attributes inherited from ActiveModel::Validator

#options

Instance Method Summary collapse

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 



11
12
13
14
15
16
17
 
# File 'activemodel/lib/active_model/validations/numericality.rb', line 11

def check_validity!
  keys = CHECKS.keys - [:odd, :even]
  options.slice(*keys).each do |option, value|
    next if 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

#validate_each(record, attr_name, value) ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
 
# File 'activemodel/lib/active_model/validations/numericality.rb', line 19

def validate_each(record, attr_name, value)
  before_type_cast = "#{attr_name}_before_type_cast"

  raw_value = record.send(before_type_cast) if record.respond_to?(before_type_cast.to_sym)
  raw_value ||= value

  return if options[:allow_nil] && raw_value.nil?

  unless value = parse_raw_value_as_a_number(raw_value)
    record.errors.add(attr_name, :not_a_number, filtered_options(raw_value))
    return
  end

  if options[:only_integer]
    unless value = parse_raw_value_as_an_integer(raw_value)
      record.errors.add(attr_name, :not_an_integer, filtered_options(raw_value))
      return
    end
  end

  options.slice(*CHECKS.keys).each do |option, option_value|
    case option
    when :odd, :even
      unless value.to_i.send(CHECKS[option])
        record.errors.add(attr_name, option, filtered_options(value))
      end
    else
      option_value = option_value.call(record) if option_value.is_a?(Proc)
      option_value = record.send(option_value) if option_value.is_a?(Symbol)

      unless value.send(CHECKS[option], option_value)
        record.errors.add(attr_name, option, filtered_options(value).merge(:count => option_value))
      end
    end
  end
end