rails built in datetime validation

Question

Does rails do any validation for datetime? I found a plugin http://github.com/adzap/validates_timeliness/tree/master, but it seems like something that should come in out

Answer 1

You can create a custom datetime validator by yourself

1) create a folder called validators in inside app directory

2) create a file datetime_validator.rb. with the following content inside app/validators directory

 class DatetimeValidator < ActiveModel::EachValidator
  def validate_each(record, attribute, value)
    if ((DateTime.parse(value) rescue ArgumentError) == ArgumentError)  
      record.errors[attribute] << (options[:message] || "must be a valid datetime")
    end
  end
end

3) Apply this validation on model

class YourModel < ActiveRecord::Base
  validates :happend_at, datetime: true
end

4) Add the below line in application.rb

config.autoload_paths += %W["#{config.root}/app/validators/"]

5) Restart your rails application

Note: The above method tested in rails 4