diff options
Diffstat (limited to 'activerecord/lib/active_record/associations/alias_tracker.rb')
-rw-r--r-- | activerecord/lib/active_record/associations/alias_tracker.rb | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/activerecord/lib/active_record/associations/alias_tracker.rb b/activerecord/lib/active_record/associations/alias_tracker.rb index 3963008a76..104de4f69d 100644 --- a/activerecord/lib/active_record/associations/alias_tracker.rb +++ b/activerecord/lib/active_record/associations/alias_tracker.rb @@ -4,23 +4,21 @@ 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) + def self.create(connection, initial_table) aliases = Hash.new(0) aliases[initial_table] = 1 - new connection, aliases, type_caster + new(connection, aliases) end - def self.create_with_joins(connection, initial_table, joins, type_caster) + def self.create_with_joins(connection, initial_table, joins) if joins.empty? - create(connection, initial_table, type_caster) + create(connection, initial_table) else aliases = Hash.new { |h, k| h[k] = initial_count_for(connection, k, joins) } aliases[initial_table] = 1 - new connection, aliases, type_caster + new(connection, aliases) end end @@ -53,17 +51,16 @@ module ActiveRecord end # table_joins is an array of arel joins which might conflict with the aliases we assign here - def initialize(connection, aliases, type_caster) + def initialize(connection, aliases) @aliases = aliases @connection = connection - @type_caster = type_caster end - def aliased_table_for(table_name, aliased_name) + def aliased_table_for(table_name, aliased_name, type_caster) if aliases[table_name].zero? # If it's zero, we can have our table_name aliases[table_name] = 1 - Arel::Table.new(table_name, type_caster: @type_caster) + Arel::Table.new(table_name, type_caster: type_caster) else # Otherwise, we need to use an alias aliased_name = @connection.table_alias_for(aliased_name) @@ -76,10 +73,15 @@ module ActiveRecord else aliased_name end - Arel::Table.new(table_name, type_caster: @type_caster).alias(table_alias) + Arel::Table.new(table_name, type_caster: type_caster).alias(table_alias) 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) |