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-rw-r--r--activerecord/lib/active_record/associations.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb
index 4606c91ffd..6efa448d49 100644
--- a/activerecord/lib/active_record/associations.rb
+++ b/activerecord/lib/active_record/associations.rb
@@ -1647,6 +1647,9 @@ module ActiveRecord
# +:inverse_of+ to avoid an extra query during validation.
# NOTE: <tt>required</tt> is set to <tt>true</tt> by default and is deprecated. If
# you don't want to have association presence validated, use <tt>optional: true</tt>.
+ # [:default]
+ # Provide a callable (i.e. proc or lambda) to specify that the association should
+ # be initialized with a particular record before validation.
#
# Option examples:
# belongs_to :firm, foreign_key: "client_of"
@@ -1660,6 +1663,7 @@ module ActiveRecord
# belongs_to :comment, touch: true
# belongs_to :company, touch: :employees_last_updated_at
# belongs_to :user, optional: true
+ # belongs_to :account, default: -> { company.account }
def belongs_to(name, scope = nil, options = {})
reflection = Builder::BelongsTo.build(self, name, scope, options)
Reflection.add_reflection self, name, reflection