Extract integer_like_primary_key_type to ease to handle it for adapters

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

@@ -396,6 +396,9 @@ module ActiveRecord
       alias :belongs_to :references
 
       def new_column_definition(name, type, **options) # :nodoc:
+        if integer_like_primary_key?(type, options)
+          type = integer_like_primary_key_type(type, options)
+        end
         type = aliased_types(type.to_s, type)
         options[:primary_key] ||= type == :primary_key
         options[:null] = false if options[:primary_key]
@@ -414,6 +417,10 @@ module ActiveRecord
         def integer_like_primary_key?(type, options)
           options[:primary_key] && [:integer, :bigint].include?(type) && !options.key?(:default)
         end
+
+        def integer_like_primary_key_type(type, options)
+          type
+        end
     end
 
     class AlterTable # :nodoc:

activerecord/lib/active_record/connection_adapters/mysql/schema_definitions.rb

@@ -57,17 +57,12 @@ module ActiveRecord
         include ColumnMethods
 
         def new_column_definition(name, type, **options) # :nodoc:
-          if integer_like_primary_key?(type, options)
-            options[:auto_increment] = true
-          end
-
           case type
           when :virtual
             type = options[:type]
           when :primary_key
             type = :integer
             options[:limit] ||= 8
-            options[:auto_increment] = true
             options[:primary_key] = true
           when /\Aunsigned_(?<type>.+)\z/
             type = $~[:type].to_sym
@@ -81,6 +76,11 @@ module ActiveRecord
           def aliased_types(name, fallback)
             fallback
           end
+
+          def integer_like_primary_key_type(type, options)
+            options[:auto_increment] = true
+            type
+          end
       end
 
       class Table < ActiveRecord::ConnectionAdapters::Table

activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb

@@ -179,17 +179,14 @@ module ActiveRecord
       class TableDefinition < ActiveRecord::ConnectionAdapters::TableDefinition
         include ColumnMethods
 
-        def new_column_definition(name, type, **options) # :nodoc:
-          if integer_like_primary_key?(type, options)
-            type = if type == :bigint || options[:limit] == 8
+        private
+          def integer_like_primary_key_type(type, options)
+            if type == :bigint || options[:limit] == 8
               :bigserial
             else
               :serial
             end
           end
-
-          super
-        end
       end
 
       class Table < ActiveRecord::ConnectionAdapters::Table

activerecord/lib/active_record/connection_adapters/sqlite3/schema_definitions.rb

@@ -9,12 +9,9 @@ module ActiveRecord
         end
         alias :belongs_to :references
 
-        def new_column_definition(name, type, **options) # :nodoc:
-          if integer_like_primary_key?(type, options)
-            type = :primary_key
-          end
-
-          super
+        private
+          def integer_like_primary_key_type(type, options)
+            :primary_key
           end
       end
     end