django notes 五：Writing models

DATABASES = {
    ‘default‘: {
        ‘ENGINE‘: ‘django.db.backends.mysql‘,
        ‘NAME‘: ‘mydb‘,
        ‘USER‘: ‘root‘,
        ‘PASSWORD‘: ‘‘,
        ‘HOST‘: ‘127.0.0.1‘,
        ‘PORT‘: ‘3306‘,
    }
}

class User(models.Model):
    class Meta:
        verbose_name = u‘用户‘
        verbose_name_plural = u‘用户‘
        db_table = ‘user‘

    user_name = models.CharField(verbose_name=u‘用户名‘, max_length=100)
    pass_word = models.CharField(verbose_name=u‘密码‘, max_length=100)

    def __str(self):
        return self.user_name


class Article(models.Model):
    class Meta:
        verbose_name = u‘文章‘
        verbose_name_plural = u‘文章‘
        db_table = ‘article‘

    title = models.CharField(verbose_name=u‘标题‘, max_length=200)
    content = models.TextField(verbose_name=u‘内容‘)
    create_time = models.DateTimeField(verbose_name=u‘创建时间‘, auto_now_add=True)
    last_modified = models.DateTimeField(verbose_name=u‘最后修改时间‘, auto_now=True)

    def __str__(self):
        return self.title


class Comment(models.Model):
    class Meta:
        verbose_name = u‘评论‘
        verbose_name_plural = u‘评论‘
        db_table = ‘comment‘

    content = models.TextField(verbose_name=u‘评论内容‘)
    article = models.ForeignKey(Article, verbose_name=‘文章‘)
    user = models.ForeignKey(User, verbose_name=u‘评论人‘)

    def __str__(self):
        return self.content[0:20]

python manage.py makemigrations
python manage.py migrate

import pymysql
pymysql.install_as_MySQLdb()