Merge pull request #29261 from kamipo/dont_expose_methods_and_attrs_for_internal_usage

Don't expose methods and attrs for internal usage

activerecord/lib/active_record/associations/alias_tracker.rb

@@ -4,8 +4,6 @@ module ActiveRecord
   module Associations
     # Keeps track of table aliases for ActiveRecord::Associations::JoinDependency
     class AliasTracker # :nodoc:
-      attr_reader :aliases
-
       def self.create(connection, initial_table, type_caster)
         aliases = Hash.new(0)
         aliases[initial_table] = 1
@@ -80,6 +78,11 @@ module ActiveRecord
         end
       end
 
+      # TODO Change this to private once we've dropped Ruby 2.2 support.
+      # Workaround for Ruby 2.2 "private attribute?" warning.
+      protected
+        attr_reader :aliases
+
       private
 
         def truncate(name)

activerecord/lib/active_record/associations/preloader/association.rb

@@ -51,11 +51,10 @@ module ActiveRecord
           raise NotImplementedError
         end
 
-        def options
-          reflection.options
-        end
-
         private
+          def options
+            reflection.options
+          end
 
           def associated_records_by_owner(preloader)
             records = load_records do |record|

activerecord/lib/active_record/associations/preloader/belongs_to.rb

@@ -3,7 +3,7 @@ module ActiveRecord
     class Preloader
       class BelongsTo < SingularAssociation #:nodoc:
         def association_key_name
-          reflection.options[:primary_key] || klass && klass.primary_key
+          options[:primary_key] || klass && klass.primary_key
         end
 
         def owner_key_name

activerecord/lib/active_record/associations/preloader/through_association.rb

@@ -65,7 +65,7 @@ module ActiveRecord
 
           def reset_association(owners, association_name)
             should_reset = (through_scope != through_reflection.klass.unscoped) ||
-               (reflection.options[:source_type] && through_reflection.collection?)
+               (options[:source_type] && through_reflection.collection?)
 
             # Don't cache the association - we would only be caching a subset
             if should_reset

activerecord/lib/active_record/reflection.rb

@@ -287,6 +287,11 @@ module ActiveRecord
         JoinKeys.new(join_pk(association_klass), join_fk)
       end
 
+      protected
+        def actual_source_reflection # FIXME: this is a horrible name
+          self
+        end
+
       private
 
         def join_pk(_)
@@ -583,12 +588,6 @@ module ActiveRecord
         Array(options[:extend])
       end
 
-      protected
-
-        def actual_source_reflection # FIXME: this is a horrible name
-          self
-        end
-
       private
 
         def calculate_constructable(macro, options)
@@ -761,7 +760,6 @@ module ActiveRecord
     # Holds all the metadata about a :through association as it was specified
     # in the Active Record class.
     class ThroughReflection < AbstractReflection #:nodoc:
-      attr_reader :delegate_reflection
       delegate :foreign_key, :foreign_type, :association_foreign_key,
                :active_record_primary_key, :type, :get_join_keys, to: :source_reflection
 
@@ -987,19 +985,23 @@ module ActiveRecord
         collect_join_reflections(seed + [self])
       end
 
-      def collect_join_reflections(seed)
-        a = source_reflection.add_as_source seed
-        if options[:source_type]
-          through_reflection.add_as_polymorphic_through self, a
-        else
-          through_reflection.add_as_through a
-        end
-      end
-
-      private
+      # TODO Change this to private once we've dropped Ruby 2.2 support.
+      # Workaround for Ruby 2.2 "private attribute?" warning.
+      protected
+        attr_reader :delegate_reflection
 
         def actual_source_reflection # FIXME: this is a horrible name
-          source_reflection.send(:actual_source_reflection)
+          source_reflection.actual_source_reflection
+        end
+
+      private
+        def collect_join_reflections(seed)
+          a = source_reflection.add_as_source seed
+          if options[:source_type]
+            through_reflection.add_as_polymorphic_through self, a
+          else
+            through_reflection.add_as_through a
+          end
         end
 
         def primary_key(klass)

activerecord/lib/active_record/relation/predicate_builder/association_query_value.rb

@@ -1,8 +1,6 @@
 module ActiveRecord
   class PredicateBuilder
     class AssociationQueryValue # :nodoc:
-      attr_reader :associated_table, :value
-
       def initialize(associated_table, value)
         @associated_table = associated_table
         @value = value
@@ -12,6 +10,11 @@ module ActiveRecord
         [associated_table.association_foreign_key.to_s => ids]
       end
 
+      # TODO Change this to private once we've dropped Ruby 2.2 support.
+      # Workaround for Ruby 2.2 "private attribute?" warning.
+      protected
+        attr_reader :associated_table, :value
+
       private
         def ids
           case value

activerecord/lib/active_record/relation/predicate_builder/polymorphic_array_value.rb

@@ -1,8 +1,6 @@
 module ActiveRecord
   class PredicateBuilder
     class PolymorphicArrayValue # :nodoc:
-      attr_reader :associated_table, :values
-
       def initialize(associated_table, values)
         @associated_table = associated_table
         @values = values
@@ -17,6 +15,11 @@ module ActiveRecord
         end
       end
 
+      # TODO Change this to private once we've dropped Ruby 2.2 support.
+      # Workaround for Ruby 2.2 "private attribute?" warning.
+      protected
+        attr_reader :associated_table, :values
+
       private
         def type_to_ids_mapping
           default_hash = Hash.new { |hsh, key| hsh[key] = [] }