Tooltron

"""

API versioning file; we can tell what kind of migrations things are

by what class they inherit from (if none, it's a v1).

"""

from south.utils import ask_for_it_by_name

class BaseMigration(object):

    def gf(self, field_name):

        "Gets a field by absolute reference."

        return ask_for_it_by_name(field_name)

class SchemaMigration(BaseMigration):

    pass

class DataMigration(BaseMigration):

    # Data migrations shouldn't be dry-run

    no_dry_run = True