Using ActiveRecord::Base.application_record.

This method gets the correct application record that is currently
defined. This will be used in place of ActiveRecord::Base to access
configurations.

Author: wangjohn

activerecord/lib/active_record/connection_adapters/abstract/quoting.rb

@@ -80,7 +80,7 @@ def unquoted_false
 
       def quoted_date(value)
         if value.acts_like?(:time)
-          zone_conversion_method = ActiveRecord::Base.default_timezone == :utc ? :getutc : :getlocal
+          zone_conversion_method = ActiveRecord::Base.application_record.default_timezone == :utc ? :getutc : :getlocal
 
           if value.respond_to?(zone_conversion_method)
             value = value.send(zone_conversion_method)

activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb

@@ -217,7 +217,7 @@ def execute(sql, name = nil)
         if @connection
           # make sure we carry over any changes to ActiveRecord::Base.default_timezone that have been
           # made since we established the connection
-          @connection.query_options[:database_timezone] = ActiveRecord::Base.default_timezone
+          @connection.query_options[:database_timezone] = ActiveRecord::Base.application_record.default_timezone
         end
 
         super

activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb

@@ -694,7 +694,7 @@ def configure_connection
           # If using Active Record's time zone support configure the connection to return
           # TIMESTAMP WITH ZONE types in UTC.
           # (SET TIME ZONE does not use an equals sign like other SET variables)
-          if ActiveRecord::Base.default_timezone == :utc
+          if ActiveRecord::Base.application_record.default_timezone == :utc
             execute("SET time zone 'UTC'", 'SCHEMA')
           elsif @local_tz
             execute("SET time zone '#{@local_tz}'", 'SCHEMA')

activerecord/lib/active_record/migration.rb

@@ -721,17 +721,17 @@ def proper_table_name(name, options = {})
 
     # Determines the version number of the next migration.
     def next_migration_number(number)
-      if ActiveRecord::Base.timestamped_migrations
+      if ActiveRecord::Base.application_record.timestamped_migrations
         [Time.now.utc.strftime("%Y%m%d%H%M%S"), "%.14d" % number].max
       else
         SchemaMigration.normalize_migration_number(number)
       end
     end
 
-    def table_name_options(config = ActiveRecord::Base)
+    def table_name_options
       {
-        table_name_prefix: config.table_name_prefix,
-        table_name_suffix: config.table_name_suffix
+        table_name_prefix: ActiveRecord::Base.application_record.table_name_prefix,
+        table_name_suffix: ActiveRecord::Base.application_record.table_name_suffix
       }
     end
 

activerecord/lib/active_record/translation.rb

@@ -6,7 +6,7 @@ module Translation
     def lookup_ancestors #:nodoc:
       klass = self
       classes = [klass]
-      return classes if klass == ActiveRecord::Base
+      return classes if klass == ActiveRecord::Base || klass == ApplicationRecord
 
       while klass != klass.base_class
         classes << klass = klass.superclass