classroom.migrations.0002_courserole_joined_at.Migration(name, app_label)[소스]¶Bases: django.db.migrations.migration.Migration
dependencies = [('classroom', '0001_initial')]¶operations = [<AddField model_name='courserole', name='joined_at', field=<django.db.models.fields.DateTimeField>, preserve_default=False>]¶