diff options
Diffstat (limited to 'activerecord/lib/active_record')
| -rw-r--r-- | activerecord/lib/active_record/associations.rb | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index 945f22d3c8..114e327926 100644 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -1133,6 +1133,17 @@ module ActiveRecord # * <tt>Firm#clients.create!</tt> (similar to <tt>c = Client.new("firm_id" => id); c.save!</tt>) # The declaration can also include an +options+ hash to specialize the behavior of the association. # + # === Scopes + # + # You can pass a second argument +scope+ as a callable (i.e. proc or + # lambda) to retrieve a specific set of records or customize the generated + # query when you access the associated collection. + # + # Scope examples: + # has_many :comments, -> { where(author_id: 1) } + # has_many :employees, -> { joins(:address) } + # has_many :posts, ->(post) { where("max_post_length > ?", post.length) } + # # === Options # [:class_name] # Specify the class name of the association. Use it only if that name can't be inferred |