sharix-sports-webservice-running/models/saved_sportsman.py

from django.db import models
from webservice_running.models import Sportsman

class SavedSportsman(models.Model):
    """
    Соединяющая таблица двух пользователей для реализации функционала сохранения пользователя в список сохранённых
    """
    sportsman = models.ForeignKey(Sportsman, on_delete=models.DO_NOTHING, related_name="sportsman_savedsportsman")
    sportsman_saved = models.ForeignKey(Sportsman, on_delete=models.DO_NOTHING, related_name="sportsman_saved")

    class Meta:
        db_table = "saved_sportsman"
        verbose_name = "сохранённый ползователь"
        verbose_name_plural = "сохранённые пользователи"
        constraints = [
            models.UniqueConstraint(fields=['sportsman', 'sportsman_saved'], name='unique_saved_sportsman')
        ]