Class: DateTimeValidator

Inherits:
ActiveModel::EachValidator
  • Object
show all
Defined in:
app/validators/date_time_validator.rb

Overview

Base validator class for the following validators:

  DateDayValidator
  DateMonthValidator
  DateYearValidator
  TimeSecondValidator
  TimeMinuteValidator
  TImeHourValidator

This class should NOT be used directly for validating attribtues in models,
instead you should be using one of the child classes listed above

Child classes MUST create an instance variable named "min_value" and "max_value"

Example on how to use one of the child classes:
  In the model file call
    validates :model_attribute, date_day: true

  To pass parameters to have custom min/max values
    validates :model_attribute, date_day: { min_day: 3, max_day: 29 }

Description:
  This class and its children are custom validators for dates/times related attributes.
  Checks if the model_attribute is empty, an integer, and within min_value and max_value inclusive

Optional parameters:
  allow_blank, default true
    If true, allows the model attribute to be empty, aka not set

  message, default "must be an integer between #{@min_value} and #{@max_value}" 
    Error message to be added to the model_attribute if an error occurs

  min_value, set in child class
    Minimum value for the model_attribute

  max_value, set in child class
    Maximum value for the model_attribute

Instance Method Summary collapse

Instance Method Details

#validate_each(record, attribute, value) ⇒ Object 



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# File 'app/validators/date_time_validator.rb', line 41

def validate_each(record, attribute, value)
  min_value = @min_value.respond_to?(:call) ? @min_value.call : @min_value
  max_value = @max_value.respond_to?(:call) ? @max_value.call : @max_value

  message ||= @message || options.fetch(:message, "must be an integer between #{min_value} and #{max_value}")
  @allow_blank ||= options.fetch(:allow_blank, true)

  if !@allow_blank && value.nil?
    record.errors.add(attribute, "can't be blank")
  elsif !value.blank?
    if !value.is_a? Integer 
      record.errors.add(attribute, 'is not an integer')
    elsif value < min_value || value > max_value
      record.errors.add(attribute, 'not in range')
    end
  end

  record.errors.add(attribute, message) if record.errors.key?(attribute)
end