HealthDiaryBackend/apps/indicator/models.py

from django.contrib.auth.models import User
from django.db import models


class Indicator(models.Model):
    """ Модель (сущность) - Измерение """
    id = models.AutoField(primary_key=True)
    type = models.ForeignKey('indicatortype.IndicatorType', on_delete=models.CASCADE)
    value1 = models.DecimalField(max_digits=8, decimal_places=3)
    value2 = models.DecimalField(max_digits=8, decimal_places=3, blank=True, null=True)
    value_added = models.DateTimeField()
    patient = models.ForeignKey('patient.Patient', on_delete=models.CASCADE)
    last_modified = models.DateTimeField(auto_now=True)
    comments = models.CharField(max_length=150, blank=True, null=True)
    observing = models.ForeignKey(User, on_delete=models.CASCADE)
    created_date = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return "Измерение № %s - %s" % (self.id, self.value1,)

    class Meta:
        verbose_name = "Измерение"
        verbose_name_plural = "Измерения"