from django.db import models
# Create your models here.
class Bird(models.Model):
"""
Inventory of observation of a certain species of birds
"""
location = models.ForeignKey('Location', on_delete=models.CASCADE, related_name='birds',
null=True, help_text="The location of the observation")
species = models.CharField(max_length=100)
count = models.IntegerField(default=0)
def __str__(self):
return f"{self.species} - Count: {self.count}"
class Location(models.Model):
name = models.CharField(max_length=100)
description = models.TextField(blank=True, null=True)
city = models.ForeignKey('City', on_delete=models.CASCADE, related_name='locations', null=True)
def __str__(self):
return self.name
class City(models.Model):
name = models.CharField(max_length=100)
country = models.CharField(max_length=100, choices=[
('USA', 'United States'),
('FRA', 'France'),
('CAN', 'Canada'),
('MEX', 'Mexico'),
('ESP', 'Spain'),
('ITA', 'Italy'),
('DEU', 'Germany'),
], default='USA')
def __str__(self):
return f"{self.name}, {self.country}"
