实验楼表结构序列化

实验楼表序列化

图片实列：

model

from utils.MyBaseModel import Base
from django.db import models
#

# Create your models here.
# 课程类别
class CourseType(Base):
    title = models.CharField('课程类别', max_length=32)
    sequence = models.IntegerField('顺序显示', default=10)

    class Meta:
        db_table = 'tb_coursetype'

    def __str__(self):
        return self.title

#
#课程标签
class CourseTag(Base):
    title = models.CharField('课程标签', max_length=32)
    sequence = models.IntegerField('展示顺序', default=10)

    class Meta:
        db_table = 'tb_coursetag'

    def __str__(self):
        return self.title


class Course(Base):
    STATUS = (
        ('0', '即将上线'),
        ('1', '已上线'),
        ('2', '已下线'),
    )
    title = models.CharField('课程名', max_length=24)
    desc = models.CharField('课程名', max_length=256)
    img = models.ImageField('课程logo', upload_to='course', null=True)
    course_type = models.ForeignKey(CourseType, verbose_name='课程类别', on_delete=models.CASCADE, default=None, null=True)
    course_tag = models.ManyToManyField(CourseTag, verbose_name='课程标签')
    status = models.CharField('课程状态', choices=STATUS, max_length=8, default='1')
    attention = models.IntegerField('关注人数', default=0)
    learner = models.IntegerField('学习人数', default=0)

    class Meta:
        db_table = 'tb_course'

    def __str__(self):
        return self.title

# zhang
class Chapters(Base):
    title = models.CharField('章标题', max_length=24)
    serial_num=models.IntegerField('章序号')
    course=models.ForeignKey(Course,related_name='chapters',on_delete=models.SET_NULL,null=True)
    class Meta:
        db_table = 'tb_chapters'

    def __str__(self):
        return self.title
# jiebiao
class Sections(Base):
    title = models.CharField('节标题', max_length=32)
    serial_num=models.IntegerField('节序号')
    chapters=models.ForeignKey(Chapters,related_name='sections',on_delete=models.SET_NULL,null=True)
    learn_time=models.IntegerField('学习小时',default=1)
    video=models.FileField('上传视频',upload_to='videos/%Y%m%d/',blank=True,max_length=1024)
    seq_num = models.IntegerField('序号', default=1)

    class Meta:
        db_table = 'tb_sections'
    def __str__(self):
        return self.title

class Path(Base):
    title = models.CharField('路径名', max_length=16)
    img = models.ImageField('路径图片', upload_to='path', null=True)
    desc = models.CharField('路径描述', max_length=255)
    user = models.ManyToManyField('user.User', blank=True)
    def course_total(self):
        count=0
        for jd in self.jieduan.all():
            count=count+jd.courses.count()
        return count
    class Meta:
        db_table='tb_table'
    def __str__(self):
        return self.title


class JieDuan(Base):
    title = models.CharField('阶段名', max_length=24)
    serial_num=models.IntegerField('阶段序号')
    path=models.ForeignKey(Path,related_name='jieduan',on_delete=models.SET_NULL,null=True)
    courses=models.ManyToManyField(Course,blank=True)
    class Meta:
        db_table = 'tb_jieduan'

    def __str__(self):
        return "%s-第%s阶段-%s" % (self.path.title, self.serial_num, self.title)

　　

　　序列化

from rest_framework import serializers
from course.models import *
# 课程
class Courseviewset(serializers.ModelSerializer):
    course_type = serializers.CharField(source='course_type.title')  # 正向查询
    # chapters_set = ChaptersSerializer(many=True)
    class Meta:
        model=Course
        fields='__all__'
# 标签课程
class CourseTagSerializers(serializers.ModelSerializer):
    class Meta:
        model=CourseTag
        fields='__all__'
#节表
class SectionsSerializer(serializers.ModelSerializer):
    class Meta:
        model = Sections
        fields = '__all__'
# 章表
class ChaptersSerializer(serializers.ModelSerializer):
    sections=SectionsSerializer(many=True) 序列化节表
    class Meta:
        model = Chapters
        fields = '__all__'
# 课程类别
class CourseTypeSerializers(serializers.ModelSerializer):
    course_set= CourseCourseSerializers(many=True)
    class Meta:
        model=CourseType
        fields='__all__'
# 单个课程继承
class CourseDeepSerializer(Courseviewset): 
　　chapters=ChaptersSerializer(many=True) # 序列化章表

# **************************************************************************************　　
class JieduanSerializers(serializers.ModelSerializer):

　　　courses=CourseCourseSerializers(many=True)
　　　class Meta:
　　　model=JieDuan
　　　fields='__all__'
　class PathSerializers(serializers.ModelSerializer):
　　　# jieduan= JieduanSerializers(many=True)
　　　class Meta:
　　　　　model=Path
　　　　　fields='__all__'
　　　　　# fields=('id','title','img','desc','course_total')

　class JieDeepSerializers(serializers.ModelSerializer):

　jieduan=JieduanSerializers(many=True)
　class Meta:
　model=Path
　fields='__all__'
　# exclude=['user']

urls

# -*- coding: utf-8 -*-
from django.contrib import admin
from django.urls import path,include
from course import views
from rest_framework.routers import DefaultRouter
routed=DefaultRouter()
routed.register(r'type',views.CourseTypeViewSet)
routed.register(r'tag',views.CourseTagViewSet)
routed.register(r'course',views.CourseViewSet)
routed.register(r'sections',views.SectionsViewSet)
routed.register(r'chapters',views.ChapteViewSet)
routed.register(r'path',views.PathViewSet)
urlpatterns = [

]
urlpatterns+=routed.urls