标签：kind return uid 选课 S1 request Django user teacher
Django 小实例S1 简易学生选课管理系统 第6节——实现登录逻辑
点击查看教程总目录
作者自我介绍：b站小UP主，时常直播编程+红警三，python1对1辅导老师。
1 - 业务逻辑
本教程第四节里面实现了登录页面和一个空的登录逻辑。
第六节这里就把登录逻辑补全。
登录的业务逻辑是：
- 检查是否注册
- 未注册，则提示账号不存在
- 注册但密码不匹配，提示密码不正确
- 注册且信息匹配，成功登录，跳转到个人主页，同时通过cookie保存登录信息。
对于教务管理系统，个人主页应该是其课程主页，所以本部分还需要添加课程主页，这里先只实现一个空的展示其个人信息的课程主页。
2 - 修改登录视图
修改user/views.py中的login方法如下：
def login(request, kind):
if kind not in ["teacher", "student"]:
return HttpResponse(INVALID_KIND)
if request.method == 'POST':
if kind == "teacher":
form = TeaLoginForm(data=request.POST)
else:
form = StuLoginForm(data=request.POST)
if form.is_valid():
uid = form.cleaned_data["uid"]
if len(uid) != 10:
form.add_error("uid", "账号长度必须为10")
else:
if kind == "teacher":
department_no = uid[:3]
number = uid[3:]
object_set = Teacher.objects.filter(department_no=department_no, number=number)
else:
grade = uid[:4]
number = uid[4:]
object_set = Student.objects.filter(grade=grade, number=number)
if object_set.count() == 0:
form.add_error("uid", "该账号不存在.")
else:
user = object_set[0]
if form.cleaned_data["password"] != user.password:
form.add_error("password", "密码不正确.")
else:
request.session['kind'] = kind
request.session['user'] = uid
# successful login
to_url = reverse("course", kwargs={'kind': kind})
return redirect(to_url)
return render(request, 'user/login_detail.html', {'form': form, 'kind': kind})
else:
context = {'kind': kind}
if request.GET.get('uid'):
uid = request.GET.get('uid')
context['uid'] = uid
if kind == "teacher":
form = TeaLoginForm({"uid": uid, 'password': '12345678'})
else:
form = StuLoginForm({"uid": uid, 'password': '12345678'})
else:
if kind == "teacher":
form = TeaLoginForm()
else:
form = StuLoginForm()
context['form'] = form
if request.GET.get('from_url'):
context['from_url'] = request.GET.get('from_url')
return render(request, 'user/login_detail.html', context)
登录后会在cookie中存储以下信息：
kind: 用户类型，学生或老师user: 用户学号或教师编号
3 添加简单主页
目前虽然是个人主页，但是后面将会是课程主页，老师的和学生的必然是不同的。
所以我们现在也先提前规划好，将主页分为学生的和老师的来处理。
course/views.py代码如下
from django.http.response import HttpResponse
from django.shortcuts import render, reverse, redirect
from user.models import Student, Teacher
from constants import INVALID_KIND
def get_user(request, kind):
"""
:param request:
:param kind: teacher or student
:return: return Teacher instance or Student instance
"""
if request.session.get('kind', '') != kind or kind not in ["student", "teacher"]:
return None
if len(request.session.get('user', '')) != 10:
return None
uid = request.session.get('user')
if kind == "student":
# 找到对应学生
grade = uid[:4]
number = uid[4:]
student_set = Student.objects.filter(grade=grade, number=number)
if student_set.count() == 0:
return None
return student_set[0]
else:
# 找到对应老师
department_no = uid[:3]
number = uid[3:]
teacher_set = Teacher.objects.filter(department_no=department_no, number=number)
if teacher_set.count() == 0:
return None
return teacher_set[0]
# Create your views here.
def home(request, kind):
if kind == "teacher":
return teacher_home(request)
elif kind == "student":
return student_home(request)
return HttpResponse(INVALID_KIND)
def teacher_home(request):
user = get_user(request, "teacher")
if not user:
return redirect(reverse("login", kwargs={"kind": "teacher"}))
info = {
"name": user.name,
"kind": "teacher",
}
context = {
"info": info
}
return render(request, 'course/nav.html', context)
def student_home(request):
user = get_user(request, "student")
if not user:
return redirect(reverse("login", kwargs={"kind": "student"}))
info = {
"name": user.name,
"kind": "student",
}
context = {
"info": info
}
return render(request, 'course/nav.html', context)
添加模板文件templates/course/nav.html
<!DOCTYPE html>
<html lang="en">
{% load static %}
<head>
<title>
{% block title %}{% endblock %}
</title>
</head>
<body>
<div class="nav">
<div class="nav-title">
<a href="{% url 'course' kind=info.kind %}">
<p class="main-title">学生选课管理系统</p>
<p class="sub-title">
{% if info.kind == "teacher" %}
教师端
{% elif info.kind == "student" %}
学生端
{% endif %}</p>
</a>
</div>
<div class="name-logo">
<div class="user-name">
{{ info.name }}
</div>
</div>
</div>
<div class="main-content">
{% block content %}{% endblock %}
</div>
</body>
</html>
然后添加course/urls.py如下
from django.urls import path
from course.views import *
urlpatterns = [
path('<slug:kind>/', home, name="course"),
]
同时还要去改下主url，即在SSCMS/urls.py的urlpatterns中添加
path('course/', include("course.urls")),
此时运行软件，登录账号后（这里又注册了一个叫李大爽的用户），
结果如图
标签：kind,return,uid,选课,S1,request,Django,user,teacher 来源： https://www.cnblogs.com/BigShuang/p/14315753.html
本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享； 2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关； 3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关； 4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除； 5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。