Enhanced Migrations Plugin Enhancement
2007-11-01
I recently hit upon the Enhanced Migrations plugin by Revolution on Rails. Works great when you develop on branches. The #dump_schema_information method of ActiveRecord::ConnectionAdapters::SchemaStatements only dumps the most recently migration file. Since each migration is now a separate entry in the migrations_info table, we can’t report only the latest one.
To this end, I generated the following diff:
1 $ svn diff vendor 2 Index: vendor/plugins/enhanced_migrations/lib/enhanced_migrations.rb 3 =================================================================== 4 --- vendor/plugins/enhanced_migrations/lib/enhanced_migrations.rb (revision 7767) 5 +++ vendor/plugins/enhanced_migrations/lib/enhanced_migrations.rb (working copy) 6 @@ -58,8 +58,8 @@ 7 8 ActiveRecord::ConnectionAdapters::SchemaStatements.send(:define_method, :dump_schema_information) do 9 begin 10 - if (current_schema = ActiveRecord::Migrator.current_version) > 0 11 - return "INSERT INTO #{ActiveRecord::Migrator.schema_info_table_name} VALUES (#{current_schema}, NOW())" 12 + select_all("SELECT * FROM #{ActiveRecord::Migrator.schema_info_table_name} ORDER BY created_at, id").map do |migration| 13 + "INSERT INTO #{ActiveRecord::Migrator.schema_info_table_name} VALUES(#{migration["id"]}, '#{migration["created_at"]}');\n" 14 end 15 rescue ActiveRecord::StatementInvalid 16 # No Schema Info
Hope this is useful for other people.
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