6.项目准备——课程模块的模型类创建

课程：

1：课程信息        2：章节信息        3：视频信息         4：资源信息

#courses/models.py
from datetime import datetime
from django.db import models
# Create your models here.
from orgs.models import OrgInfo, TeacherInfo


class CourseInfo(models.Model):
    image = models.ImageField(upload_to='course/',max_length=200,verbose_name='课程封面')
    name = models.CharField(max_length=20,verbose_name='课程名称')
    study_time = models.IntegerField(default=0,verbose_name='学习时长')
    study_num = models.IntegerField(default=0,verbose_name='学习人数')
    lever = models.CharField(choices=(('gj','高级'),('zj','中级'),('cj','初级')),max_length=5,verbose_name='课程难度',default='cj')
    love_num = models.IntegerField(default=0,verbose_name='收藏数')
    click_num = models.IntegerField(default=0,verbose_name='访问量')
    desc = models.CharField(max_length=200,verbose_name='课程简介')
    detail = models.TextField(verbose_name='课程详情')
    category = models.CharField(choices=(('qd','前端开发'),('hd','后端开发')),verbose_name='课程类别',max_length=5)
    course_notice = models.CharField(max_length=200,verbose_name='课程公告')
    course_need = models.CharField(max_length=100,verbose_name='课程须知')
    teacher_tell = models.CharField(max_length=100,verbose_name='老师教导')
    orginfo = models.ForeignKey(OrgInfo,verbose_name='所属机构')
    teacherinfo = models.ForeignKey(TeacherInfo,verbose_name='所属讲师')
    is_banner = models.BooleanField(default=False,verbose_name='是否轮播')
    add_time = models.DateTimeField(default=datetime.now,verbose_name='添加时间')
    
    def __str__(self):
        return self.name

    class Meta:
        verbose_name = '课程信息'
        verbose_name_plural = verbose_name
        
class LessonInfo(models.Model):
    name = models.CharField(max_length=50,verbose_name='章节名称')
    courseinfo = models.ForeignKey(CourseInfo,verbose_name='所属课程')
    add_time = models.DateTimeField(default=datetime.now, verbose_name='添加时间')

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = '章节信息'
        verbose_name_plural = verbose_name
        
class VideoInfo(models.Model):
    name = models.CharField(max_length=50,verbose_name='视频名称')
    study_time = models.IntegerField(default=0,verbose_name='视频时长')
    url = models.URLField(default='http://www.scuec.edu.cn',verbose_name='视频链接',max_length=200)
    lessoninfo = models.ForeignKey(LessonInfo,verbose_name='所属章节')
    add_time = models.DateTimeField(default=datetime.now, verbose_name='添加时间')

    def __str__(self):
        return self.name

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

class SourceInfo(models.Model):
    name = models.CharField(max_length=50,verbose_name='资源名称')
    down_load = models.FileField(upload_to='source/',max_length=200,verbose_name='下载路径')
    courseinfo = models.ForeignKey(CourseInfo,verbose_name='所属课程')
    add_time = models.DateTimeField(default=datetime.now, verbose_name="添加时间")

    def __str__(self):
        return self.name

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