57 lines
2.1 KiB
Python
57 lines
2.1 KiB
Python
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# The core application of the Mia project.
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# by imacat <imacat@mail.imacat.idv.tw>, 2020/6/29
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# Copyright (c) 2020 imacat.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""The data models of the Mia core application.
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"""
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from django.conf import settings
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from django.db import models
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from mia_core.utils import new_pk
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class BaseModel(models.Model):
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"""The common abstract base model that has id, created_at, created_by,
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updated_at, and updated_by."""
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id = models.PositiveIntegerField(primary_key=True)
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created_at = models.DateTimeField(auto_now_add=True)
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created_by = models.ForeignKey(
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settings.AUTH_USER_MODEL, on_delete=models.PROTECT,
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related_name="created_%(app_label)s_%(class)s")
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updated_at = models.DateTimeField(auto_now=True)
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updated_by = models.ForeignKey(
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settings.AUTH_USER_MODEL, on_delete=models.PROTECT,
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related_name="updated_%(app_label)s_%(class)s")
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.current_user = None
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def save(self, force_insert=False, force_update=False, using=None,
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update_fields=None):
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if self.pk is None:
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self.pk = new_pk(self.__class__)
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if self.current_user is not None:
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self.created_by = self.current_user
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if self.current_user is not None:
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self.updated_by = self.current_user
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super().save(force_insert=force_insert, force_update=force_update,
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using=using, update_fields=update_fields)
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class Meta:
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abstract = True
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