创建Model（1）-数据库设计

设计数据库

工作室任务管理系统.png

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.db import models
from django.contrib.auth.models import User
# Create your models here.


class Myclass(models.Model):
    name = models.CharField(max_length=100)

    def __unicode__(self):
        return self.name


class WorkRoom(models.Model):
    name = models.CharField(max_length=200)

    def __unicode__(self):
        return self.name


class Student(models.Model):
    name = models.CharField(max_length=200, default=0)
    student_class = models.ForeignKey(
        Myclass,
        on_delete=models.CASCADE,
        verbose_name="student class",
    )
    work_room = models.ForeignKey(
        WorkRoom,
        default=0,
        on_delete=models.CASCADE,
        verbose_name="work room",
    )
    user = models.OneToOneField(
        User,
        on_delete=models.CASCADE,
        verbose_name="login user",
        default=0,
    )

    def __unicode__(self):
        return str(self.id) + " " + self.user.username + " " \
               + self.student_class.name + " "


class Teacher(models.Model):
    name = models.CharField(max_length=200, default=0)
    staff_no = models.CharField(max_length=20)
    STAFF_ROOM_CHOICES = (
        ('network', '计算机网络'),
        ('information', '信息技术'),
        ('software', '计算软件'),
        ('application', '计算机应用'),
        ('iot', '物联网应用'),
    )
    work_room = models.ForeignKey(
        WorkRoom,
        default=0,
        on_delete=models.CASCADE,
        verbose_name="work room",
    )
    staff_room = models.CharField(
        max_length=20,
        choices=STAFF_ROOM_CHOICES,
        default='network',
    )
    user = models.OneToOneField(
        User,
        on_delete=models.CASCADE,
        verbose_name="login user",
        default=0,
    )

    def __unicode__(self):
        return self.name


class Task(models.Model):
    title = models.CharField(max_length=200)
    content = models.TextField()
    file = models.FileField(upload_to='uploads/%Y/%m/%d')
    creator = models.ForeignKey(
        Teacher, default=0
    )
    member = models.ManyToManyField(
        Student,
    )
    create_date = models.DateTimeField(auto_now_add=True)
    update_date = models.DateTimeField(auto_now=True)
    deadline = models.CharField(max_length=200)

    def __unicode__(self):
        return self.title


class TaskReport(models.Model):
    student = models.ForeignKey(Student, default=0)
    task = models.ForeignKey(Task, default=0)
    content = models.BinaryField()
    file = models.FileField(upload_to='uploads/%Y/%m/%d')
    create_date = models.DateTimeField(auto_now=False)
    GRADE_CHOICES = (
        ('A', 'EXCELLENT'),
        ('B', 'GOOD'),
        ('C', 'NOT BAD'),
        ('D', 'BAD'),
    )
    grade = models.CharField(
        max_length=1,
        choices=GRADE_CHOICES,
        default='B',
    )
    teachers_comment = models.BinaryField()
    create_date = models.DateTimeField(auto_now=False)

写模板，登陆页面，教师登陆成功的首页，创建任务页面，显示任务详情页面