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1、Django Admin学习模型

news 来源：原创 2024/9/20 9:44:11

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 modelsclass Category(models.Model):name = models.CharField(max_length=100)class Meta:verbose_name_plural = "Categories"def __str__(self):return self.nameclass Origin(models.Model):name = models.CharField(max_length=100)def __str__(self):return self.nameclass 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.nameclass Meta:abstract = Trueclass 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?")# relationshipsfather = 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, Villainclass 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)