Except `table_name` from column objects

The `table_name` was added at #23677 to detect whether serial column or
not correctly.

We can do that detection before initialize column object, it makes
column object size smaller, and it probably helps column object
de-duplication.

1 files changed, 5 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/schema_dumper.rb b/activerecord/lib/active_record/schema_dumper.rb
index d475e77444..2f7cc07221 100644
--- a/activerecord/lib/active_record/schema_dumper.rb
+++ b/activerecord/lib/active_record/schema_dumper.rb
@@ -47,6 +47,7 @@ module ActiveRecord
     end
 
     private
+      attr_accessor :table_name
 
       def initialize(connection, options = {})
         @connection = connection
@@ -110,6 +111,8 @@ HEADER
       def table(table, stream)
         columns = @connection.columns(table)
         begin
+          self.table_name = table
+
           tbl = StringIO.new
 
           # first dump primary key column
@@ -159,6 +162,8 @@ HEADER
           stream.puts "# Could not dump table #{table.inspect} because of following #{e.class}"
           stream.puts "#   #{e.message}"
           stream.puts
+        ensure
+          self.table_name = nil
         end
       end