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Restore the use of #add_to_target for nested attribute updates on existing records, and don't bother updating the association if the update is going to be rejected anyway.

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This requires adding a `skip_callbacks` argument to `#add_to_target`
so that we don't call the callbacks multiple times in this case,
which is functionally an application of existing association data,
rather than an addition of a new record to the association.
This commit is contained in:
Ben Woosley 2013-07-20 17:23:45 -07:00
parent 018697dece
commit d35e900c00
3 changed files with 20 additions and 15 deletions
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6
activerecord/CHANGELOG.md
View file

@ -1,3 +1,9 @@
* `add_to_target` now accepts a second optional `skip_callbacks` argument
If truthy, it will skip the :before_add and :after_add callbacks.
*Ben Woosley*
* Fix interactions between `:before_add` callbacks and nested attributes
assignment of `has_many` associations, when the association was not
yet loaded:

8
activerecord/lib/active_record/associations/collection_association.rb
View file

@ -290,7 +290,7 @@ module ActiveRecord
# Returns true if the collection is empty.
#
# If the collection has been loaded
# If the collection has been loaded
# it is equivalent to <tt>collection.size.zero?</tt>. If the
# collection has not been loaded, it is equivalent to
# <tt>collection.exists?</tt>. If the collection has not already been
@ -366,8 +366,8 @@ module ActiveRecord
target
end
def add_to_target(record)
callback(:before_add, record)
def add_to_target(record, skip_callbacks = false)
callback(:before_add, record) unless skip_callbacks
yield(record) if block_given?
if association_scope.distinct_value && index = @target.index(record)
@ -376,7 +376,7 @@ module ActiveRecord
@target << record
end
callback(:after_add, record)
callback(:after_add, record) unless skip_callbacks
set_inverse_instance(record)
record

21
activerecord/lib/active_record/nested_attributes.rb
View file

@ -465,18 +465,17 @@ module ActiveRecord
association.build(attributes.except(*UNASSIGNABLE_KEYS))
end
elsif existing_record = existing_records.detect { |record| record.id.to_s == attributes['id'].to_s }
# Make sure we are operating on the actual object which is in the association's
# proxy_target array (either by finding it, or adding it if not found)
# Take into account that the proxy_target may have changed due to callbacks
target_record = association.target.detect { |record| record.id.to_s == attributes['id'].to_s }
if target_record
existing_record = target_record
else
#FIXME: there is no good way of adding the record without callback
association.target << existing_record
end
unless call_reject_if(association_name, attributes)
# Make sure we are operating on the actual object which is in the association's
# proxy_target array (either by finding it, or adding it if not found)
# Take into account that the proxy_target may have changed due to callbacks
target_record = association.target.detect { |record| record.id.to_s == attributes['id'].to_s }
if target_record
existing_record = target_record
else
association.add_to_target(existing_record, :skip_callbacks)
end
if !call_reject_if(association_name, attributes)
assign_to_or_mark_for_destruction(existing_record, attributes, options[:allow_destroy])
end
else