Example of Proxy Model Visualization

models.py

from django.db import models

class Visualization(models.Model):
    name = models.CharField(primary_key=True, max_length=200)
    description = models.TextField()
    position = models.IntegerField(default=200)

    def __repr__ (self):
        return self.name

    def __str__ (self):
        return self.name
    
    def from_data(csvfile):
        raise NotImplementedError("You must implement from_data in your visualization subclass.")