module ActiveRecord::AttributeMethods::Dirty

Included modules:: ActiveModel::Dirty

Public Instance Methods

attribute_before_last_save(attr_name) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 165
def attribute_before_last_save(attr_name)
  mutations_before_last_save.original_value(attr_name)
end

Returns the original value of an attribute before the last save. Behaves similarly to attribute_was. This method is useful in after callbacks to get the original value of an attribute before the save that just occurred

attribute_change(*) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 219
def attribute_change(*)
  emit_warning_if_needed("attribute_change", "saved_change_to_attribute")
  super
end

Calls superclass method

attribute_change_to_be_saved(attr_name) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 185
def attribute_change_to_be_saved(attr_name)
  mutations_from_database.change_to_attribute(attr_name)
end

Alias for `attribute_change`

attribute_changed?(*) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 224
def attribute_changed?(*)
  emit_warning_if_needed("attribute_changed?", "saved_change_to_attribute?")
  super
end

Calls superclass method

attribute_in_database(attr_name) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 190
def attribute_in_database(attr_name)
  mutations_from_database.original_value(attr_name)
end

Alias for `attribute_was`

attribute_was(*) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 214
def attribute_was(*)
  emit_warning_if_needed("attribute_was", "attribute_before_last_save")
  super
end

Calls superclass method

attributes_in_database() Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 210
def attributes_in_database
  changes_to_save.transform_values(&:first)
end

Alias for `changed_attributes`

changed(*) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 234
def changed(*)
  emit_warning_if_needed("changed", "saved_changes.keys")
  super
end

Calls superclass method ActiveModel::Dirty#changed

changed?(*) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 229
def changed?(*)
  emit_warning_if_needed("changed?", "saved_changes?")
  super
end

Calls superclass method ActiveModel::Dirty#changed?

changed_attribute_names_to_save() Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 205
def changed_attribute_names_to_save
  changes_to_save.keys
end

Alias for `changed`

changes_to_save() Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 200
def changes_to_save
  mutations_from_database.changes
end

Alias for `changes`

has_changes_to_save?() Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 195
def has_changes_to_save?
  mutations_from_database.any_changes?
end

Alias for `changed?`

reload(*) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 48
def reload(*)
  super.tap do
    @previous_mutation_tracker = nil
    clear_mutation_trackers
    @changed_attributes = ActiveSupport::HashWithIndifferentAccess.new
  end
end

reload the record and clears changed attributes.

Calls superclass method

save(*) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 33
def save(*)
  if status = super
    changes_applied
  end
  status
end

Attempts to save the record and clears changed attributes if successful.

Calls superclass method

save!(*) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 41
def save!(*)
  super.tap do
    changes_applied
  end
end

Attempts to save! the record and clears changed attributes if successful.

Calls superclass method

saved_change_to_attribute(attr_name) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 157
def saved_change_to_attribute(attr_name)
  mutations_before_last_save.change_to_attribute(attr_name)
end

Returns the change to an attribute during the last save. If the attribute was changed, the result will be an array containing the original value and the saved value.

Behaves similarly to attribute_change. This method is useful in after callbacks, to see the change in an attribute that just occurred

This method can be invoked as `saved_change_to_name` in instead of `saved_change_to_attribute(“name”)`

saved_change_to_attribute?(attr_name, **options) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 144
def saved_change_to_attribute?(attr_name, **options)
  mutations_before_last_save.changed?(attr_name, **options)
end

Did this attribute change when we last saved? This method can be invoked as `saved_change_to_name?` instead of `saved_change_to_attribute?(“name”)`. Behaves similarly to attribute_changed?. This method is useful in after callbacks to determine if the call to save changed a certain attribute.

Options

from When passed, this method will return false unless the original value is equal to the given option

to When passed, this method will return false unless the value was changed to the given value

saved_changes() Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 175
def saved_changes
  mutations_before_last_save.changes
end

Returns a hash containing all the changes that were just saved.

saved_changes?() Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 170
def saved_changes?
  mutations_before_last_save.any_changes?
end

Did the last call to `save` have any changes to change?

will_save_change_to_attribute?(attr_name, **options) Show source

# File activerecord/lib/active_record/attribute_methods/dirty.rb, line 180
def will_save_change_to_attribute?(attr_name, **options)
  mutations_from_database.changed?(attr_name, **options)
end

Alias for `attribute_changed?`