Module: Respect::HasConstraints

Included in:
BooleanSchema, NumericSchema, StringSchema
Defined in:
lib/respect/has_constraints.rb

Overview

Module supporting execution of validators referred in options.

Classes including this module must fulfill the following requirements:

  • Respond to options and returned a hash of options where keys refers to validator name (i.e. greater_than for GreaterThanValidator).

  • Respond to validate_type(object) which must returns the sanitized object.

Instance Method Summary (collapse)

Instance Method Details

- (Object) validate(object)

Call validate_type with the given object, apply the constraints and assign the sanitized object.



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# File 'lib/respect/has_constraints.rb', line 22

def validate(object)
  sanitized_object = validate_type(object)
  validate_constraints(sanitized_object) unless sanitized_object.nil? && allow_nil?
  self.sanitized_object = sanitized_object
  true
rescue ValidationError => e
  # Reset sanitized object.
  self.sanitized_object = nil
  raise e
end

- (Object) validate_constraints(value)

Validate all the constraints listed in options to the given value.



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# File 'lib/respect/has_constraints.rb', line 12

def validate_constraints(value)
  options.each do |option, arg|
    if validator_class = Respect.validator_for(option)
      validator_class.new(arg).validate(value)
    end
  end
end