Django打造在线教育平台_day_2：新建organization app 编写models

1、新建organization app，Tools 工具栏运行 run manage.py Task，输入：

startapp organization 

2、分析organization app，需要建立3个表如下。

3、编写organization /models.py

from  datetime import datetime

from django.db import models

# Create your models here.

class CityDict(models.Model):
    name = models.CharField(max_length=20, verbose_name=u'城市')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')
    desc = models.CharField(max_length=20, verbose_name=u'城市描述')
    class Meta:
        verbose_name = u'城市'
        verbose_name_plural = verbose_name

class CourseOrg(models.Model):
    city = models.ForeignKey(CityDict, verbose_name=u'所在城市')  # 引入外建，完成1对多的关系
    name = models.CharField(max_length=50, verbose_name=u'机构名称')
    desc = models.TextField(verbose_name=u'机构描述')
    click_nums = models.IntegerField(default=0, verbose_name=u'点击数')
    fav_nums = models.IntegerField(default=0, verbose_name=u'收藏人数')
    image = models.ImageField(upload_to='courses/%Y%m', max_length=100, verbose_name=u'封面图')
    address = models.CharField(max_length=150, default=u'', verbose_name=u'机构地址')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'课程机构'
        verbose_name_plural = verbose_name


class Teacher(models.Model):
    org = models.ForeignKey(CourseOrg, verbose_name=u'所属机构')  # 引入外建，完成1对多的关系
    name = models.CharField(max_length=50, verbose_name=u'教师名')
    work_years = models.IntegerField(default=0, verbose_name=u'工作年限')
    work_company = models.CharField(max_length=50, verbose_name=u'就职公司')
    work_position = models.CharField(max_length=50, verbose_name=u'工作职位')
    points = models.CharField(max_length=50, verbose_name=u'教学特点')
    click_nums = models.IntegerField(default=0, verbose_name=u'点击数')
    fav_nums = models.IntegerField(default=0, verbose_name=u'收藏人数')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'教师'
        verbose_name_plural = verbose_name

4、在MxOnline/settings.py中注册app

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'users',  # 注册App
    'operation',
    'courses ',
    'organization ',
]

 5、在数据库生成新定义的表，Tools 工具栏运行 run manage.py Task输入：

makemigrations 
migrate