此专栏应用环境和模型基于此文

开发环境

系统：windows11

开发工具：vscode

开发语言：python 3.8

开发框架：django 3.2

数据库：mysql8.4.1

项目目录

settings

注册两个应用

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'Entities',
    'Events',
]

Entities应用

models

from django.db import models


class Category(models.Model):
    name = models.CharField(max_length=100)
    class Meta:
        verbose_name_plural = "Categories"
    def __str__(self):
        return self.name

class Origin(models.Model):
    name = models.CharField(max_length=100)
    def __str__(self):
        return self.name

class Entity(models.Model):
    GENDER_MALE = "Male"
    GENDER_FEMALE = "Female"
    GENDER_OTHERS = "Others/Unknown"
    name = models.CharField(max_length=100)
    alternative_name = models.CharField(
        max_length=100, null=True, blank=True
    )
    category = models.ForeignKey(Category, on_delete=models.CASCADE, verbose_name='类别')
    origin = models.ForeignKey(Origin, on_delete=models.CASCADE)
    gender = models.CharField(
        max_length=100,
        choices=(
            (GENDER_MALE, GENDER_MALE),
            (GENDER_FEMALE, GENDER_FEMALE),
            (GENDER_OTHERS, GENDER_OTHERS),
        )
    )
    description = models.TextField()
    def __str__(self):
        return self.name
    class Meta:
        abstract = True

class Hero(Entity):
    class Meta:
        verbose_name_plural = "Heroes"
    is_immortal = models.BooleanField(default=True)
    benevolence_factor = models.PositiveSmallIntegerField(
        help_text="How benevolent this hero is?"
    )
    arbitrariness_factor = models.PositiveSmallIntegerField(
        help_text="How arbitrary this hero is?"
    )
    # relationships
    father = models.ForeignKey(
        "self", related_name="+", null=True, blank=True, on_delete=models.SET_NULL
    )
    mother = models.ForeignKey(
        "self", related_name="+", null=True, blank=True, on_delete=models.SET_NULL
    )
    spouse = models.ForeignKey(
        "self", related_name="+", null=True, blank=True, on_delete=models.SET_NULL
    )

class Villain(Entity):
    is_immortal = models.BooleanField(default=False)
    malevolence_factor = models.PositiveSmallIntegerField(
        help_text="How malevolent this villain is?"
    )
    power_factor = models.PositiveSmallIntegerField(
        help_text="How powerful this villain is?"
    )
    is_unique = models.BooleanField(default=True)
    count = models.PositiveSmallIntegerField(default=1)

admin

from django.contrib import admin  
from .models import Category, Origin, Hero, Villain  
  
admin.site.register(Category)  
admin.site.register(Origin)  
admin.site.register(Hero)  
admin.site.register(Villain)

Events应用

models

from django.db import models
from Entities.models import Hero, Villain


class Epic(models.Model):
    name = models.CharField(max_length=255)
    participating_heroes = models.ManyToManyField(Hero)
    participating_villains = models.ManyToManyField(Villain)

class Event(models.Model):
    epic = models.ForeignKey(Epic, on_delete=models.CASCADE)
    details = models.TextField()
    years_ago = models.PositiveIntegerField()

class EventHero(models.Model):
    event = models.ForeignKey(Event, on_delete=models.CASCADE)
    hero = models.ForeignKey(Hero, on_delete=models.CASCADE)
    is_primary = models.BooleanField()

class EventVillain(models.Model):
    event = models.ForeignKey(Event, on_delete=models.CASCADE)
    hero = models.ForeignKey(Villain, on_delete=models.CASCADE)
    is_primary = models.BooleanField()

admin

from django.contrib import admin  
from .models import Epic, Event, EventHero, EventVillain  
  
admin.site.register(Epic)  
admin.site.register(Event)  
admin.site.register(EventHero)  
admin.site.register(EventVillain)

呈现：

此之前，需设置settings时区，语言，创建管理员