1、model中涉及的表
根据课程页面信息,课程与章节、课程与资源、课程与视频,视频与章节均是一对多的关系,用外键来完成
2、编写model
执行命令startapp courses,然后立即注册到settings中
courses models.py
# _*_ coding: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=50, verbose_name=u"课程名")
desc = models.CharField(max_length=300, verbose_name=u"课程描述")
detail = models.TextField(verbose_name=u"课程详情")
degree = models.CharField(max_length=2, choices=(("cj", "初级"), ("zj", "中级"), ("gj", "高级")))
learn_times = models.IntegerField(default=0, verbose_name=u"学习时长(分钟)")
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")
image = models.ImageField(upload_to="courses/%Y%m", verbose_name=u"封面图", max_length=100)
click_nums = models.IntegerField(default=0, verbose_name=u"点击数")
add_time = models.DateTimeField(default=datetime.now, verbose_name=u"添加时间")
class Meta:
verbose_name = u"课程"
verbose_name_plural = verbose_name
class Lesson(models.Model):
course = models.ForeignKey(Course, verbose_name=u"课程")
name = models.CharField(max_length=100, verbose_name=u"章节名")
add_time = models.DateTimeField(default=datetime.now, verbose_name=u"添加时间")
class Meta:
verbose_name = u"章节"
verbose_name_plural = verbose_name
class Video(models.Model):
lesson = models.ForeignKey(Lesson, verbose_name=u"章节")
name = models.CharField(max_length=100, verbose_name=u"视频名")
add_time = models.DateTimeField(default=datetime.now, verbose_name=u"添加时间")
class Meta:
verbose_name = u"视频"
verbose_name_plural = verbose_name
class CourseResource(models.Model):
course = models.ForeignKey(Course, verbose_name=u"课程")
name = models.CharField(max_length=100, verbose_name=u"名称")
download = models.FileField(upload_to="course/resource/%Y%m", verbose_name=u"资源文件", max_length=100)
add_time = models.DateTimeField(default=datetime.now, verbose_name=u"添加时间")
class Meta:
verbose_name = u"课程资源"
verbose_name_plural = verbose_name