第二章 在线教育平台(数据库设计)

数据库设计(model分层设计)

标签：mysql python2.7 django1.9.8

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APP分类

• Users-用户管理

创建用户models

# _*_ encoding:utf-8 _*_
# 用户基本信息表
from __future__ import unicode_literals

from django.db import models
from django.contrib.auth.models import AbstractUser
# Create your models here.


class UserProfile(AbstractUser):
    nike_name = models.CharField(max_length=64, verbose_name=u'用户别名', default='')
    birthday = models.DateField(verbose_name=u'生日', null=True, blank=True)
    gender = models.CharField(max_length=32, choices=(('male', u'男'), ('female', '女')), default='')
    address = models.CharField(max_length=128, verbose_name=u'地址', null=True, blank=True, default='')
    mobile = models.CharField(max_length=11, verbose_name=u'手机号', null=True, blank=True, default='')
    image = models.ImageField(upload_to='image/%Y/%m', default='image/default.png', max_length=128)

    class Meta:
        verbose_name = u'用户基本信息表'
        verbose_name_plural = verbose_name

    def __unicode__(self):
        return self.username

基层邮箱验证和轮播图model放入用户基本信息表中

class EmailVerifyRecord(models.Model):
    code = models.CharField(max_length=24, verbose_name=u'验证码')
    email = models.EmailField(max_length=64, verbose_name=u'邮箱地址')
    send_type = models.CharField(choices=(('register', u'注册'), ('forget', u'找回密码')), max_length=24, verbose_name=u'验证码方式')
    send_time = models.DateTimeField(default=datetime.now, verbose_name=u'发送时间')

    class Meta:
        verbose_name = u'邮箱验证码发送'
        verbose_name_plural = verbose_name


class Banner(models.Model):
    title = models.CharField(max_length=128, verbose_name=u'标题')
    image = models.ImageField(upload_to='banner/%Y/%m', verbose_name=u'图片地址', max_length=128)
    url = models.URLField(max_length=128, verbose_name=u'连接地址')
    index = models.IntegerField(default=100, verbose_name=u'轮播图顺序')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'轮播图'
        verbose_name_plural = verbose_name

• Course-课程管理

课程基本信息 Cource

章节信息 Lesson

视频 Video

课程资源 CourceResource

model 创建

# _*_ encoding:utf-8 _*_
from __future__ import unicode_literals
from datetime import datetime

from django.db import models

# Create your models here.


class Course(models.Model):
    name = models.CharField(max_length=128, verbose_name=u'课程名称')
    desc = models.CharField(max_length=256, verbose_name=u'课程描述')
    detail = models.TextField(verbose_name=u'课程详情')
    degree = models.CharField(choices=(('cj', '初级'), ('zj', '中级'), ('gj', '高级')), max_length=2, verbose_name=u'课程难度')
    learn_time = models.IntegerField(default=0, verbose_name=u'课程时长')
    students = models.IntegerField(default=0, verbose_name=u'学习人数')
    fav_nums = models.IntegerField(default=0, verbose_name=u'收藏人数')
    click_nums = models.IntegerField(default=0, verbose_name=u'点击数')
    image = models.ImageField(upload_to='courses/%Y/%m', verbose_name=u'封面图', max_length=128)
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'课程信息'
        verbose_name_plural = verbose_name


class Lesson(models.Model):
    course = models.ForeignKey(Course, verbose_name=u'章节外键')
    name = models.CharField(max_length=128, verbose_name=u'章节名称')
    add_time = models.DateTimeField(datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'章节信息'
        verbose_name_plural = verbose_name


class Video(models.Model):
    lesson = models.ForeignKey(Lesson, verbose_name=u'视频')
    name = models.CharField(max_length=128, verbose_name=u'视频名称')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'视频信息'
        verbose_name_plural = verbose_name


class CourseResource(models.Model):
    course = models.ForeignKey(Course, verbose_name=u'资源')
    download = models.FileField(upload_to='course/resource/%Y/%m', verbose_name=u'下载地址', max_length=128)
    name = models.CharField(max_length=128, verbose_name=u'资源名称')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'资源信息'
        verbose_name_plural = verbose_name

• Organization-机构和教师管理

CourseOrg - 课程机构基本信息

Teacher - 教师基本信息

CityDict - 城市信息

model 设计

# _*_ encoding:utf-8 _*_
from __future__ import unicode_literals
from datetime import datetime

from django.db import models

# Create your models here.


class CityDict(models.Model):
    name = models.CharField(max_length=64, verbose_name=u'城市')
    desc = models.CharField(max_length=256, verbose_name=u'城市描述')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

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


class CourseOrg(models.Model):
    name = models.CharField(max_length=64, 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'收藏数')
    image = models.ImageField(upload_to='org/%Y/%m', max_length=128, verbose_name=u'图片地址')
    address = models.CharField(max_length=64, verbose_name=u'地址')
    city = models.ForeignKey(CityDict, verbose_name=u'城市')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'机构信息'
        verbose_name_plural = verbose_name


class Teacher(models.Model):
    org = models.ForeignKey(CourseOrg, verbose_name=u'教师')
    name = models.CharField(max_length=64, verbose_name=u'教师名称')
    points = models.CharField(max_length=32, verbose_name=u'授课特点')
    work_years = models.IntegerField(default=0, verbose_name=u'工作年限')
    work_company = models.CharField(max_length=32, verbose_name=u'工作公司')
    work_position = models.CharField(max_length=32, verbose_name=u'工作职务')
    click_nums = models.IntegerField(default=0, verbose_name=u'点击数')
    fav_nums = models.IntegerField(default=0, verbose_name=u'收藏数')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

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

• Operation-用户操作管理

UserAsk - 用户咨询

CourseComments - 用户评论

UserFavorite - 用户收藏

UserMessage - 用户消息

UserCourse - 用户学习的课程

models设计

# _*_ encoding:utf-8 _*_
from __future__ import unicode_literals
from datetime import datetime

from django.db import models

from users.models import UserProfile
from course.models import Course

# Create your models here.


class UserAsk(models.Model):
    name = models.CharField(max_length=64, verbose_name=u'姓名')
    mobile = models.CharField(max_length=11, verbose_name=u'手机号')
    course_name = models.CharField(max_length=64, verbose_name=u'课程名称')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'用户咨询'
        verbose_name_plural =  verbose_name


class CourseComments(models.Model):
    # 课程评论
    user = models.ForeignKey(UserProfile, verbose_name=u'用户')
    course = models.ForeignKey(Course, verbose_name=u'课程')
    comments = models.CharField(max_length=256, verbose_name=u'评价信息')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'课程评价'
        verbose_name_plural = verbose_name


class UserFavorite(models.Model):
    user = models.ForeignKey(UserProfile, verbose_name=u'用户')
    fav_id = models.IntegerField(default=0, verbose_name=u'收藏内容类型')
    fav_type = models.IntegerField(choices=((1, '课程'), (2, '机构'), (3, '教师')), default=1, verbose_name=u'收藏类型')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'用户收藏'
        verbose_name_plural = verbose_name


class UserMessage(models.Model):
    user = models.IntegerField(default=0, verbose_name=u'接受用户')
    message = models.CharField(max_length=512, verbose_name=u'用户评价')
    has_read = models.BooleanField(default=False, verbose_name=u'是否已读')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'消息信息'
        verbose_name_plural = verbose_name


class UserCourse(models.Model):
    user = models.ForeignKey(UserProfile, verbose_name=u'用户')
    course = models.ForeignKey(Course, verbose_name=u'课程')
    add_time = models.DateTimeField(default=datetime.now, verbose_name=u'添加时间')

    class Meta:
        verbose_name = u'用户学习课程'
        verbose_name_plural = verbose_name
        

• app集合

将所有的app放入一个apps集合中

setting.py

import sys

# model serach
sys.path.insert(0, os.path.join(BASE_DIR, 'apps'))

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• 本篇博客原视频博主[慕课在线教育平台]
• 本篇博客撰写人: XiaoJinZi 转载请注明出处
• 学生能力有限 附上邮箱: [email protected] 不足以及误处请大佬指责