Class: ActiveModel::Validations::NumericalityValidator
- Inherits:
-
EachValidator
- Object
- ActiveModel::Validator
- EachValidator
- ActiveModel::Validations::NumericalityValidator
- Defined in:
- 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 inherited from ActiveModel::Validator
Instance Method Summary collapse
- #check_validity! ⇒ Object
-
#initialize(options) ⇒ NumericalityValidator
constructor
A new instance of NumericalityValidator.
- #validate_each(record, attr_name, value) ⇒ Object
Methods inherited from EachValidator
Methods inherited from ActiveModel::Validator
Constructor Details
#initialize(options) ⇒ NumericalityValidator
Returns a new instance of NumericalityValidator.
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# File 'lib/active_model/validations/numericality.rb', line 12 def initialize() super(.reverse_merge(:only_integer => false, :allow_nil => false)) end |
Instance Method Details
#check_validity! ⇒ Object
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# File 'lib/active_model/validations/numericality.rb', line 16 def check_validity! keys = CHECKS.keys - [:odd, :even] .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
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# File 'lib/active_model/validations/numericality.rb', line 24 def validate_each(record, attr_name, value) before_type_cast = "#{attr_name}_before_type_cast" raw_value = record.send("#{attr_name}_before_type_cast") if record.respond_to?(before_type_cast.to_sym) raw_value ||= value return if [:allow_nil] && raw_value.nil? unless value = parse_raw_value_as_a_number(raw_value) record.errors.add(attr_name, :not_a_number, (raw_value)) return end if [:only_integer] unless value = parse_raw_value_as_an_integer(raw_value) record.errors.add(attr_name, :not_an_integer, (raw_value)) return end end .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, (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, (value).merge(:count => option_value)) end end end end |