Django相关知识点笔记代码等

import hashlib from django.http import HttpResponse, HttpResponseRedirect from django.shortcuts import render from django.contrib.sessions.models import Session from django.conf import settings from .models import User # Create your views here. def reg_view(request): if request.method=='GET': return render(request,'user/register.html') elif request.method=='POST': username=request.POST['username'] password_1=request.POST['password_1'] password_2=request.POST['password_2'] if password_1!=password_2: return HttpResponse('两次密码输入不一致') m=hashlib.md5() m.update(password_1.encode()) password_m=m.hexdigest() old_users=User.objects.filter(username=username) print(old_users) if old_users: return HttpResponse('--用户名已注册--') try: user=User.objects.create(username=username,password=password_m) except Exception as e: print(f'----create user error {e}') return HttpResponse('用户名已注册') request.session['username']=username request.session['uid']=user.id return HttpResponseRedirect('/index') # Create your views here. def login_view(request): if request.method=='GET': if request.session.get('username') and request.session.get('uid'): return HttpResponseRedirect('/index') # return HttpResponse('session 已登录') session_key = request.COOKIES.get(settings.SESSION_COOKIE_NAME) print(f"request.COOKIES:{request.COOKIES}") try: session = Session.objects.get(session_key=session_key) if session: data = session.get_decoded() username = data.get('username') uid = data.get('uid') if username and uid: request.session['username'] = username request.session['uid'] = uid return HttpResponseRedirect('/index') # return HttpResponse('数据库 session 已登录') except Session.DoesNotExist: pass c_username=request.COOKIES.get('username') c_uid=request.COOKIES.get('uid') if c_username and c_uid: request.session['username']=c_username request.session['uid']=c_uid return HttpResponseRedirect('/index') # return HttpResponse('cookie 已登录') return render(request,'user/login.html') elif request.method=='POST': username=request.POST['username'] password=request.POST['password'] try: user=User.objects.get(username=username) except Exception as e: print(f'---login tests----{e}') return HttpResponse('----用户名或者密码错误------') m=hashlib.md5() m.update(password.encode()) if m.hexdigest()!=user.password: return HttpResponse('用户名或者密码错误') request.session['username']=username request.session['uid']=user.id resp=HttpResponseRedirect('/index') if 'remember' in request.POST: resp.set_cookie('username',username,3600*24*2) resp.set_cookie('uid',user.id,3600*24*2) return resp def logout_view(request): if 'username' in request.session: del request.session['username'] if 'uid' in request.session: del request.session['uid'] resp=HttpResponseRedirect('/index') if 'username' in request.COOKIES: resp.delete_cookie('username') if 'uid' in request.COOKIES: resp.delete_cookie('uid') return resp