module DeepDirty

Constants

VERSION

Public Class Methods

included(base) click to toggle source

# File lib/deep_dirty.rb, line 4
def self.included(base)
  base.class_eval do
    before_validation :deep_dirty_check
  end
end

Public Instance Methods

deep_changed?() click to toggle source

apply deep dirty check and then return ‘changed?`

# File lib/deep_dirty.rb, line 11
def deep_changed?
  deep_dirty_check
  changed?
end

deep_dirty_check() click to toggle source

Compare each attribute to it’s value before type cast and mark changes where detected

# File lib/deep_dirty.rb, line 17
def deep_dirty_check
  self.attributes.keys.each do |attr|
    next if attribute_changed?(attr)
    col = column_for_attribute(attr)
    uncast_value = read_attribute_before_type_cast(attr)
    recast_value = col.type_cast(uncast_value)
    unless recast_value == read_attribute(attr)
      changed_attributes[attr] = recast_value
    end
  end
  # This should never break validation
  true
end