2👍
✅
You can refer here: Abstract base classes
According to your question, I will do:
class BasicInfo(models.Model):
title = models.CharField(max_length=255, blank=True)
link = models.CharField(max_length=300, blank=True)
state = models.CharField(max_length=30, blank=True)
update_at = models.DateTimeField(auto_now=True, blank=True, null=True)
class Meta:
abstract = True
class Projects(BasicInfo):
....
class ProjectsArchive(BasicInfo):
....
After completing BasicInfo, You can reuse the title, link , state and update_at.
However we can create common model containing state and crawl_update_at for Status and StatusArchive.
class StatusInfo(models.Model):
state = models.CharField(max_length=255, blank=True)
crawl_update_at = models.DateTimeField(auto_now=True, blank=True, null=True)
class Meta:
abstract = True
class Status(StatusInfo):
project = models.ForeignKey(Projects, null = True, blank = True)
....
class StatusArchive(StatusInfo):
project = models.ForeignKey(ProjectsArchive, null = True, blank = True)
...
0👍
You can create a CommonModel where in you can put your redundant fields then whichever models you want to use them in just inherit CommonModel instead of models.Model.
class CommonModel(models.Model):
class Meta:
abstract = True
title = models.CharField(max_length=255, blank=True)
link = models.CharField(max_length=300, blank=True)
state = models.CharField(max_length=30, blank=True)
update_at = models.DateTimeField(auto_now=True, blank=True, null=True)
class ProjectArchive(CommonModel):
any_new_field_you_want_to_add
0👍
What you are looking for is abstract meta class.
https://docs.djangoproject.com/en/1.8/topics/db/models/
class ProjectTemplate(models.Model):
title = models.CharField(max_length=255, blank=True)
link = models.CharField(max_length=300, blank=True)
state = models.CharField(max_length=30, blank=True)
update_at = models.DateTimeField(auto_now=True, blank=True, null=True)
....
class Meta:
abstract = True
class Projects(ProjectTemplate):
pass
class ProjectsArchive(ProjectTemplate):
pass
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0👍
You could use inheritance.
Please look at the following link
django abstract models versus regular inheritance
And also this the django docs about models (take a look at Abstract base classes)
Source:stackexchange.com