Extract `default_primary_key?` to refactor `column_spec_for_primary_key`

4 files changed, 20 insertions, 20 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb
index 2209874d0a..e5dc7d9b06 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb
@@ -14,7 +14,7 @@ module ActiveRecord
       end
 
       def column_spec_for_primary_key(column)
-        return if column.type == :integer
+        return {} if default_primary_key?(column)
         spec = { id: schema_type(column).inspect }
         spec.merge!(prepare_column_options(column))
       end
@@ -56,6 +56,10 @@ module ActiveRecord
 
       private
 
+      def default_primary_key?(column)
+        schema_type(column) == :integer
+      end
+
       def schema_type(column)
         column.type
       end
diff --git a/activerecord/lib/active_record/connection_adapters/mysql/schema_dumper.rb b/activerecord/lib/active_record/connection_adapters/mysql/schema_dumper.rb
index 914ea98f79..c65e99812f 100644
--- a/activerecord/lib/active_record/connection_adapters/mysql/schema_dumper.rb
+++ b/activerecord/lib/active_record/connection_adapters/mysql/schema_dumper.rb
@@ -3,18 +3,13 @@ module ActiveRecord
     module MySQL
       module ColumnDumper
         def column_spec_for_primary_key(column)
-          spec = {}
           if column.bigint?
-            spec[:id] = ':bigint'
+            spec = { id: :bigint.inspect }
             spec[:default] = schema_default(column) || 'nil' unless column.auto_increment?
-            spec[:unsigned] = 'true' if column.unsigned?
-          elsif column.auto_increment?
-            spec[:unsigned] = 'true' if column.unsigned?
-            return if spec.empty?
           else
-            spec[:id] = schema_type(column).inspect
-            spec.merge!(prepare_column_options(column).delete_if { |key, _| key == :null })
+            spec = super.except!(:null)
           end
+          spec[:unsigned] = 'true' if column.unsigned?
           spec
         end
 
@@ -30,6 +25,10 @@ module ActiveRecord
 
         private
 
+        def default_primary_key?(column)
+          super && column.auto_increment?
+        end
+
         def schema_type(column)
           if column.sql_type == 'tinyblob'
             :blob
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_dumper.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_dumper.rb
index 5cb2bbbf18..8c983f240c 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_dumper.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_dumper.rb
@@ -3,16 +3,9 @@ module ActiveRecord
     module PostgreSQL
       module ColumnDumper
         def column_spec_for_primary_key(column)
-          spec = {}
-          if column.serial?
-            return unless column.bigint?
-            spec[:id] = ':bigserial'
-          elsif column.type == :uuid
-            spec[:id] = ':uuid'
-            spec[:default] = schema_default(column) || 'nil'
-          else
-            spec[:id] = schema_type(column).inspect
-            spec.merge!(prepare_column_options(column).delete_if { |key, _| key == :null })
+          spec = super.except!(:null)
+          if schema_type(column) == :uuid
+            spec[:default] ||= 'nil'
           end
           spec
         end
@@ -31,6 +24,10 @@ module ActiveRecord
 
         private
 
+        def default_primary_key?(column)
+          schema_type(column) == :serial
+        end
+
         def schema_type(column)
           return super unless column.serial?
 
diff --git a/activerecord/lib/active_record/schema_dumper.rb b/activerecord/lib/active_record/schema_dumper.rb
index f115c7542b..91be063a4f 100644
--- a/activerecord/lib/active_record/schema_dumper.rb
+++ b/activerecord/lib/active_record/schema_dumper.rb
@@ -126,7 +126,7 @@ HEADER
             tbl.print ", primary_key: #{pk.inspect}" unless pk == 'id'
             pkcol = columns.detect { |c| c.name == pk }
             pkcolspec = @connection.column_spec_for_primary_key(pkcol)
-            if pkcolspec
+            if pkcolspec.present?
               pkcolspec.each do |key, value|
                 tbl.print ", #{key}: #{value}"
               end