django个人笔记（三）—— 完整版学生管理系统

完整版学生管理系统：
1、用户模块
2、学生模块
3、带模板
4、多表操作（一对一，一对多）
5、用户权限验证

完整代码:https://github.com/luo981695830/--self/tree/master/day6

 

关于项目的整个流程可以参照django个人笔记（二）https://blog.csdn.net/luo981695830/article/details/99701341

重点说一下部分:

1、添加应用

INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'user',
    'student'
)

ps:常见问题，如果没有添加引用，数据库迁移同步的时候，不会生成迁移文件

2、主子路由分发

from django.conf.urls import include, url
from django.contrib import admin
from user.views import index

urlpatterns = [
    # Examples:
    # url(r'^$', 'day6.views.home', name='home'),
    # url(r'^blog/', include('blog.urls')),

    url(r'^admin/', include(admin.site.urls)),
    url(r'^$',index,name='index'),
    url(r'^user/',include('user.urls',namespace='user')),
    url(r'^student/',include('student.urls',namespace='student'))
]

3、用户模块路由分发

from django.conf.urls import include, url
from .views import user_register,user_logout,user_login

urlpatterns = [
    url(r'user_register/$',user_register,name='user_register'),
    url(r'user_login/$',user_login,name='user_login'),
    url(r'user_logout/$',user_logout,name='user_logout'),
]

4、学生模块路由分发

from django.conf.urls import include, url
from django.contrib import admin
from .views import student_add,student_update,student_all,student_del

urlpatterns = [
    url(r'^student_add/$',student_add,name='student_add'),
    url(r'^student_update/(\d+)/$',student_update,name='student_update'),
    url(r'^student_all/$',student_all,name='student_all'),
    url(r'^student_del/(\d+)/$',student_del,name='student_del'),
]

5、学生模型

from django.db import models

# Create your models here.
# # 自定义模型管理器
# class StudentInfoManager(models.Manager):
#     # 修改管理器返回的原始查询集合
#     def all(self):
#         # 重写all 方法，返回性别='girl'的学生
#         return super(StudentInfoManager,self).all().filter(gender = 'girl')
#
#     # 在模型类中自定义创建对象方法
#     def create_object(self,name,age,gender):
#         # 创建学生对象
#         student = StudentInfo()
#         # 获取数据
#         student.name = name
#         student.age = age
#         student.gender = gender
#         student.save()
#         return student

class Banclass(models.Model):
    '''班级信息'''
    banname = models.CharField(max_length=20,verbose_name='班级名称')

    def __str__(self):
        return self.banname

    class Meta:
        verbose_name = '班级信息'
        verbose_name_plural = verbose_name

class StudentInfo(models.Model):
    '''学生信息'''
    name = models.CharField(max_length=20,verbose_name='学生姓名')
    age = models.IntegerField(verbose_name='学生年龄')
    gender = models.CharField(choices=(('girl','女'),('boy','男')),default='girl',max_length=6,verbose_name='学生性别')
    ban = models.ForeignKey(Banclass,verbose_name='所属班级')

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = '学生信息'
        verbose_name_plural = verbose_name

class StudentId(models.Model):
    '''学号信息'''
    stuid = models.CharField(max_length=20,verbose_name='学号')
    student = models.OneToOneField(StudentInfo,verbose_name='所属学生')

    def __str__(self):
        return self.stuid

    class Meta:
        verbose_name = '学号信息'
        verbose_name_plural = verbose_name

6、迁移同步

python manage.py makemigrations

python manage.py migrate

 

7、用户模块逻辑

from django.shortcuts import render,redirect
from django.core.urlresolvers import reverse
from django.contrib.auth.models import User
from django.contrib.auth import authenticate,login,logout

# Create your views here.
def index(request):
    return render(request,'index.html')

def user_register(request):
    if request.method == 'GET':
        return render(request,'register.html')
    else:
        username = request.POST.get('username',None)
        password = request.POST.get('password',None)
        password1 = request.POST.get('password1',None)

        user = User.objects.filter(username = username)
        if user:
            return render(request, 'register.html', {
                'msg': '用户已存在'
            })
        else:
            if password == password1:
                user = User()
                user.username = username
                user.password = password
                user.set_password(password)
                user.save()
                return redirect(reverse('user:user_login'))
            else:
                return render(request, 'register.html', {
                    'msg': '两次输入的密码不一致'
                })

def user_login(request):
    if request.method == 'GET':
        return render(request,'login.html')
    else:
        username = request.POST.get('username',None)
        password = request.POST.get('password',None)
        #  如果这个地方使用authenticate方法验证  在注册逻辑中 必须使用set_password方法
        a = authenticate(username=username,password=password)
        if a:
            login(request,a)
            return redirect(reverse('index'))
        else:
            return render(request, 'login.html', {
                'msg': '用户名或密码错误'
            })


def user_logout(request):
    logout(request)
    return redirect(reverse('index'))

 8、学生模块逻辑

from django.shortcuts import render,redirect
from django.core.urlresolvers import reverse
from django.contrib.auth.decorators import login_required
from .models import StudentInfo,StudentId,Banclass
# Create your views here.
@login_required(login_url='/user/user_login/')
def student_all(request):
    '''查看所有学生'''
    all_students = StudentInfo.objects.all()
    return render(request,'student_list.html',{
        'all_students':all_students
    })

@login_required(login_url='/user/user_login/')
def student_add(request):
    '''添加学生'''
    if request.method == 'GET':
        return render(request,'student_add.html',{
            'all_bans':Banclass.objects.all()
        })
    else:
        stuname = request.POST.get('stuname', None)
        stuage = request.POST.get('stuage', None)
        stugender = request.POST.get('stugender', None)
        stuban = request.POST.get('stuban', None)
        stuuid = request.POST.get('stuuid', None)

        student = StudentInfo()
        student.name = stuname
        student.age = stuage
        student.gender = stugender
        student.ban_id = Banclass.objects.filter(banname=stuban)[0].id
        student.save()

        studentid = StudentId()
        studentid.student_id = student.id
        studentid.stuid = stuuid
        studentid.save()

        return redirect(reverse('student:student_all'))
@login_required(login_url='/user/user_login/')
def student_del(request,stuid):
    '''删除学生'''
    student = StudentInfo.objects.filter(id = int(stuid))[0]
    student.studentid.delete()
    student.delete()
    return redirect(reverse('student:student_all'))

@login_required(login_url='/user/user_login/')
def student_update(request,stuid):
    '''修改学生'''
    if request.method == 'GET':
        student = StudentInfo.objects.filter(id = int(stuid))[0]
        all_bans = Banclass.objects.all()
        return render(request,'student_update.html',{
            'student':student,
            'all_bans':all_bans
        })
    else:
        stuname = request.POST.get('stuname',None)
        stuage = request.POST.get('stuage',None)
        stugender = request.POST.get('stugender',None)
        stuban = request.POST.get('stuban',None)
        stuuid = request.POST.get('stuuid',None)

        student = StudentInfo.objects.filter(id = int(stuid))[0]
        student.name = stuname
        student.age = stuage
        student.gender = stugender
        student.ban_id = Banclass.objects.filter(banname=stuban)[0].id
        student.save()

        studentid = student.studentid
        studentid.student_id = student.id
        studentid.stuid = stuuid
        studentid.save()

        return redirect(reverse('student:student_all'))