text: from django.db import models
  
  
  class Configuration(models.Model):
      name = models.CharField(max_length=50, unique=True)
      description = models.TextField(null=True)
      board = models.ForeignKey('Board', on_delete=models.SET_NULL, null=True)
      power = models.ForeignKey('PowerSupply', on_delete=models.SET_NULL, null=True)
  
      def __str__(self):
          return self.name