Migration DOs and DON'Ts

DO

• When creating a new column for foreign key usage, be sure to check for
  
  • type: integer
  • length: 8
• Make sure the down() method contains valid downwards migration code or throws a Doctrine_Migration_IrreversibleMigrationException

DON'T

• Use both DDL and DML in the up() method
  • use up() for DDL and postUp() for DML