Django 개인 블로그 구축 자습서---models 데이터베이스 모델

from django.db import models
from mdeditor.fields import MDTextField
from django.contrib.auth.models import User
from django.contrib.auth.models import AbstractUser
from django.conf import settings
from datetime import date

'''class UserInfo(AbstractUser):
    user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)'''


class Category(models.Model):
    """
        Django          models.Model  。
        Category             name     。
        CharField        name      ，CharField     ，
        CharField   max_length          ，                   。
           Django                 ，        DateTimeField、     IntegerField   。
        Django             ：
        https://docs.djangoproject.com/en/1.10/ref/models/fields/#field-types
        """
    name = models.CharField(max_length=100)

    def catcount(self):
        return Articles.objects.filter(category__name__exact=self.name).filter(status='  ').count()

    def __str__(self):
        return self.name


class Tag(models.Model):
    """
           Tag      ，  Category   。
                  models.Model  ！
        """
    name = models.CharField(max_length=100)

    def __str__(self):
        return self.name


# Create your models here.


class Articles(models.Model):
    id = models.AutoField(primary_key=True)  # id
    title = models.CharField(max_length=150)  #     
    body = models.TextField()  #     
    timestamp = models.DateTimeField()  #     
    authorname = models.ForeignKey('JiaBlog.BlogUser', on_delete=models.CASCADE)  #     
    views = models.PositiveIntegerField(default=0)
    category = models.ForeignKey(Category, on_delete=models.CASCADE, primary_key=False)
    tags = models.ManyToManyField(Tag, blank=True, null=True)
    greats = models.PositiveIntegerField(default=0)
    comments = models.IntegerField(default=0)
    status = models.CharField(max_length=20, default="DEL")
    brief = models.CharField(max_length=200, blank=True, null=True)
    pic = models.ImageField(upload_to='jiablogimages')
    bodypic = models.ImageField(upload_to='jiablogimages', blank=True, null=True)
    istop = models.CharField(max_length=5, default='', null=True, blank=True)
    articlebodybrief = models.TextField(blank=True, null=True)

    #    

    def increase_views(self):
        self.views += 1
        self.save(update_fields=['views'])
        return self.views

    @property
    def all_comments(self):
        return self.comment_set.all()

    def article_greats(self):
        return self.greats


# Create your models here.


class Comment(models.Model):
    name = models.ForeignKey('JiaBlog.BlogUser', max_length=100, on_delete=models.CASCADE)
    email = models.EmailField(max_length=255)
    # email = name.email
    text = models.TextField()
    created_time = models.DateTimeField(auto_now_add=True)
    post = models.ForeignKey('JiaBlog.Articles', on_delete=models.CASCADE)
    parentcomment = models.ForeignKey('JiaBlog.Comment', on_delete=models.CASCADE, blank=True, null=True)

    def __str__(self):
        return self.text[:20]

    def ifnochild(self):
        '''if Comment.objects.filter(comment__comment__post_id=self.post_id).count() == 0:
            print('1')
            return True
            else:
            return False'''
        if self.comment_set.all().count() != 0:
            return 1
        else:
            return 0


class Message(models.Model):
    username = models.CharField(max_length=256)
    title = models.CharField(max_length=512)
    content = models.TextField(max_length=256)
    email = models.EmailField()
    publish = models.DateTimeField(auto_now_add=True)
    phone = models.CharField(max_length=11, blank=True, default="", null=True)
    messpic = models.CharField(max_length=50, null=True)

    #     
    def __str__(self):
        tpl = ''
        return tpl.format(username=self.username, title=self.title, content=self.content, publish=self.publish)