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Editorial Team
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Asked: 2026-05-20T02:55:24+00:00

class Category(models.Model): name = models.CharField(max_lenth=50) class SubCatergory(models.Model): parent_category = models.ForeignKey(Category) name = models.CharField(max_length=100) class

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class Category(models.Model):
    name = models.CharField(max_lenth=50)

class SubCatergory(models.Model):
    parent_category = models.ForeignKey(Category)
    name = models.CharField(max_length=100)

class Product(models.Model):
    sub_category = models.ManytoManyField(SubCatergory) 
    name = models.CharField(max_length=100)

Is the above best practice for organising relationships or should I combine the models for cat/sub cat to make it more like a tagging system? For example a product can be tagged with “Cat A” and “Sub Cat A”. The app won’t need to have categories added to it after launch.

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1 Answer

  1. Editorial Team

    This really depends on your requirements. If you’re writing a program for a system that only requires a two-level hierarchy then what you’ve done is perfectly fine. If you can imagine a time where you might have a more complicated hierarchy then combining them does make sense.

    You mention a ‘product’, which to me suggests that you want a strict hierarchy so your current models seem fine.

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