Add `:charset` and `:collation` options support for MySQL string and text columns

Example:

    create_table :foos do |t|
      t.string :string_utf8_bin, charset: 'utf8', collation: 'utf8_bin'
      t.text   :text_ascii,      charset: 'ascii'
    end

1 files changed, 4 insertions, 1 deletions

diff --git a/activerecord/lib/active_record/schema_dumper.rb b/activerecord/lib/active_record/schema_dumper.rb
index da95920571..eaeaf0321b 100644
--- a/activerecord/lib/active_record/schema_dumper.rb
+++ b/activerecord/lib/active_record/schema_dumper.rb
@@ -105,7 +105,10 @@ HEADER
       end
 
       def table(table, stream)
-        columns = @connection.columns(table)
+        columns = @connection.columns(table).map do |column|
+          column.instance_variable_set(:@table_name, table)
+          column
+        end
         begin
           tbl = StringIO.new