peeweedbevolve.py 文件源码

def set_default(db, migrator, table_name, column_name, field):
  default = field.default
  if callable(default): default = default()
  param = pw.Param(field.db_value(default))
  op = pw.Clause(pw.SQL('ALTER TABLE'), pw.Entity(table_name), pw.SQL('ALTER COLUMN'), pw.Entity(column_name), pw.SQL('SET DEFAULT'), param)
  return normalize_whatever_junk_peewee_migrations_gives_you(db, migrator, op)