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-rw-r--r--activerecord/lib/active_record/associations.rb14
-rw-r--r--activerecord/lib/active_record/associations/class_methods/join_dependency.rb4
-rw-r--r--activerecord/lib/active_record/base.rb7
3 files changed, 14 insertions, 11 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb
index f6a7fd3ca0..78652ba0c5 100644
--- a/activerecord/lib/active_record/associations.rb
+++ b/activerecord/lib/active_record/associations.rb
@@ -132,24 +132,24 @@ module ActiveRecord
# Clears out the association cache.
def clear_association_cache #:nodoc:
- self.class.reflect_on_all_associations.to_a.each do |assoc|
- instance_variable_set "@#{assoc.name}", nil
- end if persisted?
+ @association_cache.clear if persisted?
end
+ # :nodoc:
+ attr_reader :association_cache
+
private
# Returns the specified association instance if it responds to :loaded?, nil otherwise.
def association_instance_get(name)
- ivar = "@#{name}"
- if instance_variable_defined?(ivar)
- association = instance_variable_get(ivar)
+ if @association_cache.key? name
+ association = @association_cache[name]
association if association.respond_to?(:loaded?)
end
end
# Set the specified association instance.
def association_instance_set(name, association)
- instance_variable_set("@#{name}", association)
+ @association_cache[name] = association
end
# Associations are a set of macro-like class methods for tying objects together through
diff --git a/activerecord/lib/active_record/associations/class_methods/join_dependency.rb b/activerecord/lib/active_record/associations/class_methods/join_dependency.rb
index bb6145656e..6263c4e3b0 100644
--- a/activerecord/lib/active_record/associations/class_methods/join_dependency.rb
+++ b/activerecord/lib/active_record/associations/class_methods/join_dependency.rb
@@ -176,7 +176,7 @@ module ActiveRecord
join_part = join_parts.detect { |j|
j.reflection.name.to_s == name &&
- j.parent_table_name == parent.class.table_name }
+ j.parent_table_name == parent.class.table_name }
raise(ConfigurationError, "No such association") unless join_part
@@ -201,7 +201,7 @@ module ActiveRecord
macro = join_part.reflection.macro
if macro == :has_one
- return if record.instance_variable_defined?("@#{join_part.reflection.name}")
+ return if record.association_cache.key?(join_part.reflection.name)
association = join_part.instantiate(row) unless row[join_part.aliased_primary_key].nil?
set_target_and_inverse(join_part, association, record)
else
diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index d3a739b98b..f32132b18a 100644
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -1368,6 +1368,7 @@ MSG
# hence you can't have attributes that aren't part of the table columns.
def initialize(attributes = nil)
@attributes = attributes_from_column_definition
+ @association_cache = {}
@attributes_cache = {}
@new_record = true
@readonly = false
@@ -1415,6 +1416,7 @@ MSG
def init_with(coder)
@attributes = coder['attributes']
@attributes_cache, @previously_changed, @changed_attributes = {}, {}, {}
+ @association_cache = {}
@readonly = @destroyed = @marked_for_destruction = false
@new_record = false
_run_find_callbacks
@@ -1627,8 +1629,9 @@ MSG
end
clear_aggregation_cache
- clear_association_cache
- @attributes_cache = {}
+
+ @association_cache = {}
+ @attributes_cache = {}
@new_record = true
ensure_proper_type