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Diffstat (limited to 'activerecord/CHANGELOG')
| -rw-r--r-- | activerecord/CHANGELOG | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/activerecord/CHANGELOG b/activerecord/CHANGELOG index 72bbeeec61..e434372fb7 100644 --- a/activerecord/CHANGELOG +++ b/activerecord/CHANGELOG @@ -1,5 +1,29 @@ *Rails 3.1.0 (unreleased)* +* Make has_many :through associations work correctly when you build a record and then save it. This + requires you to set the :inverse_of option on the source reflection on the join model, like so: + + class Post < ActiveRecord::Base + has_many :taggings + has_many :tags, :through => :taggings + end + + class Tagging < ActiveRecord::Base + belongs_to :post + belongs_to :tag, :inverse_of => :tagging # :inverse_of must be set! + end + + class Tag < ActiveRecord::Base + has_many :taggings + has_many :posts, :through => :taggings + end + + post = Post.first + tag = post.tags.build :name => "ruby" + tag.save # will save a Taggable linking to the post + + [Jon Leighton] + * Support the :dependent option on has_many :through associations. For historical and practical reasons, :delete_all is the default deletion strategy employed by association.delete(*records), despite the fact that the default strategy is :nullify for regular has_many. Also, this only |