[ydah]

With format: 'dd/mm/yyyy', "01/02/2026" can pass a February 1 restriction but be persisted as January 2. Validation uses the specified format, while persistence uses the attribute's default parsing.

require 'active_record'
require 'validates_timeliness'

Time.zone = 'UTC'
ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
ActiveRecord::Schema.define do
  create_table :events do |t|
    t.date :d
  end
end

ValidatesTimeliness.setup do |config|
  config.extend_orms = [:active_record]
  config.use_plugin_parser = true
end

class Event < ActiveRecord::Base
  validates_date :d, format: 'dd/mm/yyyy', on_or_after: Date.new(2026, 2, 1)
end

record = Event.create!(d: '01/02/2026')
p record.reload.d # Before: 2026-01-02; after: 2026-02-01

Write successfully parsed formatted input back to writable temporal attributes before checking restrictions, then validate the attribute's cast value. This makes validation and persistence use the same interpretation.