forked from CGM_Public/pretix_original
68 lines
3.4 KiB
Python
68 lines
3.4 KiB
Python
#
|
|
# This file is part of pretix (Community Edition).
|
|
#
|
|
# Copyright (C) 2014-2020 Raphael Michel and contributors
|
|
# Copyright (C) 2020-2021 rami.io GmbH and contributors
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
|
|
# Public License as published by the Free Software Foundation in version 3 of the License.
|
|
#
|
|
# ADDITIONAL TERMS APPLY: Pursuant to Section 7 of the GNU Affero General Public License, additional terms are
|
|
# applicable granting you additional permissions and placing additional restrictions on your usage of this software.
|
|
# Please refer to the pretix LICENSE file to obtain the full terms applicable to this work. If you did not receive
|
|
# this file, see <https://pretix.eu/about/en/license>.
|
|
#
|
|
# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
|
|
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
|
|
# details.
|
|
#
|
|
# You should have received a copy of the GNU Affero General Public License along with this program. If not, see
|
|
# <https://www.gnu.org/licenses/>.
|
|
#
|
|
"""
|
|
Django, for theoretically very valid reasons, creates migrations for *every single thing*
|
|
we change on a model. Even the `help_text`! This makes sense, as we don't know if any
|
|
database backend unknown to us might actually use this information for its database schema.
|
|
|
|
However, pretix only supports PostgreSQL and SQLite and we can be pretty
|
|
certain that some changes to models will never require a change to the database. In this case,
|
|
not creating a migration for certain changes will save us some performance while applying them
|
|
*and* allow for a cleaner git history. Win-win!
|
|
|
|
Only caveat is that we need to do some dirty monkeypatching to achieve it...
|
|
"""
|
|
from django.db import models
|
|
from django.db.migrations.operations import models as modelops
|
|
from django_countries.fields import CountryField
|
|
|
|
|
|
def monkeypatch_migrations():
|
|
modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("verbose_name")
|
|
modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("verbose_name_plural")
|
|
modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("ordering")
|
|
modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("get_latest_by")
|
|
modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("default_manager_name")
|
|
modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("permissions")
|
|
modelops.AlterModelOptions.ALTER_OPTION_KEYS.remove("default_permissions")
|
|
IGNORED_ATTRS = [
|
|
# (field type, attribute name, banlist of field sub-types)
|
|
(models.Field, 'verbose_name', []),
|
|
(models.Field, 'help_text', []),
|
|
(models.Field, 'validators', []),
|
|
(models.Field, 'editable', [models.DateField, models.DateTimeField, models.DateField, models.BinaryField]),
|
|
(models.Field, 'blank', [models.DateField, models.DateTimeField, models.AutoField, models.NullBooleanField,
|
|
models.TimeField]),
|
|
(models.CharField, 'choices', [CountryField])
|
|
]
|
|
|
|
original_deconstruct = models.Field.deconstruct
|
|
|
|
def new_deconstruct(self):
|
|
name, path, args, kwargs = original_deconstruct(self)
|
|
for ftype, attr, banlist in IGNORED_ATTRS:
|
|
if isinstance(self, ftype) and not any(isinstance(self, ft) for ft in banlist):
|
|
kwargs.pop(attr, None)
|
|
return name, path, args, kwargs
|
|
|
|
models.Field.deconstruct = new_deconstruct
|