models:

class Blueprint(models.Model):
    id = models.AutoField(primary_key=True)
    name = models.CharField(max_length=120)
    description = models.TextField()
    # workloads = models.ManyToManyField('Workload', db_constraint=False)
    # workloads = models.ManyToManyField('self', null=True)

    class Meta:
        ordering = ["name", ]


class Workload(models.Model):
    id = models.AutoField(primary_key=True)
    blueprints = models.ManyToManyField('Blueprint', db_constraint=False, null=True, blank=True)
    name = models.CharField(max_length=120)
    description = models.TextField()
    image = models.CharField(max_length=120)
    flavor = models.CharField(max_length=120)

    class Meta:
        ordering = ["name", ]