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-rw-r--r--activerecord/lib/active_record/associations/belongs_to_association.rb2
-rw-r--r--activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb3
-rw-r--r--activerecord/lib/active_record/associations/through_association.rb2
3 files changed, 4 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/associations/belongs_to_association.rb b/activerecord/lib/active_record/associations/belongs_to_association.rb
index 81c6e400d2..ddfc6f6c05 100644
--- a/activerecord/lib/active_record/associations/belongs_to_association.rb
+++ b/activerecord/lib/active_record/associations/belongs_to_association.rb
@@ -77,7 +77,7 @@ module ActiveRecord
end
def stale_state
- owner[reflection.foreign_key].to_s
+ owner[reflection.foreign_key] && owner[reflection.foreign_key].to_s
end
end
end
diff --git a/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb b/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb
index 2ee5dbbd70..88ce03a3cd 100644
--- a/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb
+++ b/activerecord/lib/active_record/associations/belongs_to_polymorphic_association.rb
@@ -27,7 +27,8 @@ module ActiveRecord
end
def stale_state
- [super, owner[reflection.foreign_type].to_s]
+ foreign_key = super
+ foreign_key && [foreign_key.to_s, owner[reflection.foreign_type].to_s]
end
end
end
diff --git a/activerecord/lib/active_record/associations/through_association.rb b/activerecord/lib/active_record/associations/through_association.rb
index fd0e90aaf0..be890e5767 100644
--- a/activerecord/lib/active_record/associations/through_association.rb
+++ b/activerecord/lib/active_record/associations/through_association.rb
@@ -62,7 +62,7 @@ module ActiveRecord
# properly support stale-checking for nested associations.
def stale_state
if through_reflection.macro == :belongs_to
- owner[through_reflection.foreign_key].to_s
+ owner[through_reflection.foreign_key] && owner[through_reflection.foreign_key].to_s
end
end