Django之小结

常用的函数方法与包的调用

# 登陆视图函数
def login(request):
    if request.method == 'GET':
        return render(request,'login.html')
    else:
        user = request.POST.get('user')
        pwd = request.POST.get('pwd')
        validcode = request.POST.get('validcode')
        
        response = {'user':None,'err_msg':''}
        if validcode.upper() == requeset.session['keep_str'].upper():
            user_obj = auth.authenticate(username=user,password=pwd)
            if user_obj:
                auth.login(request,user_obj)
                response['user']=user
            else:
                response['err_msg']='用户名或密码错误'
        else:
            response['err_msg']='验证码错误'
        from django.http import JsonResponse(response)

# 注册视图函数
def register(request):
    if request.is_ajax():
        res = {'user':None,'err_msg':''}
        form = UserForm(request.POST)
        if form.is_valid():
            res['user']=form.cleaned_data.get('user')
            user = form.cleaned_data.get('user')
            pwd = form.cleaned_data.get('pwd')
            email = form.cleaned_data.get('email')
            
            user = UserInfo.objects.create_user(username=user,password=pwd,email=email)
                        
        else:
            res['err_msg']=form.error
        return JsonResponse(res)

    else:
        form =UserForm()
        return render(request,'register.html',local())
# 注销
def logout(request):
    auth.logout(request)
    return redirect('/login/')
# 修改密码
def setpwd(request):
    if request.method =='GET':
        return render(request,'setpwd.html')
    else:
        response={'user':None,'err_msg':''}
        pwd = request.POST.get('pwd')
        rpwd = request.POST.get('rpwd')
        if pwd ==rpwd:
            user = UserInfo.objects.get(username=request.user.username)
            user.set_password(raw_password=pwd)
            user.save()
            response['user']=200
        else:
            response['err_msg']='两次输入不一致'
        return JsonResponse(response)

# 主页
def index(request):
    return render(request,'index.html')


# django组件路径
shortcuts:捷径   from django.shortcuts import render,HttpResponse,redriect
http:传输        from django.http import JsonResponse
contrib:附件     from django.contrib import auth    
urls:路径        from django.urls import reverse
models:模型      from django.models import Q



# 登陆装饰器
auth组件提供的装饰器
导入方法: from django.auth.decorators import login_required
此外还需要在setting中设置 认证路径 LOGIN_ULR='/longin/'

# 静态文件
1.创建静态文件包 static
2.在setting中设置 static路径  
    STATIC_URL = '/static/'
    STATICFILES_DIRS = [
        os.path.join(BASE_DIR,'static')
]

# 替换auth中的User表
1.导入 from django.contrib.auth.models import AbstractUser
2.在模型类中创建UserInfo表继承AbstractUser
3.在setting中设置路径 AUTH_USER_MODEL=''

# cbv
导入View
from django.views import View
class CustomerView(View):
    def get(self,request):
        if reverse('customers_list') == request.path
            label='公户列表'
            customer_list = Customer.objects.filter(consultant__innull=Ture)
        else:
            label='我的客户'
            customer_list = Customer.objects.filter(consultant=request.user)
        
        # search
        val = request.GET.get('q')
        field = request.GET.get('field')
        if val:
            q = Q()
            q.chidren.append((field + '__contains',val))
            customer_list = customer_list.filter(q)

# 添加与编辑
基于cbv
1.创建视图类 
2.编写get与post方法
from django.views import View
class AddEditConsultRecordView(View):
    def get(self,request,edit_id=None):
        edit_obj = ConsultRecord.objects.filter(pk=edit_id).first()
        form = ConsultRecordModelForm(request,instance=edit_obj)
        return render(request, "add_edit_consultrecord.html", {"form": form,"edit_obj":edit_obj})

    def post(self,request,edit_id=None):
        edit_obj = ConsultRecord.objects.filter(pk=edit_id).first()
        form=ConsultRecordModelForm(request.POST,instance=edit_obj)
        if form.is_valid():
            form.save()
            return redirect(reverse("consult_records"))
        else:
            return render(request, "add_edit_consultrecord.html", {"form": form,"edit_obj":edit_obj})
    
# 权限相关
1.创建表关系，建立权限关系表
2.编写视图函数与中间件
    视图函数:
        1.获取用户信息
        2.验证信息，成功设置session(request.session['user_id']=user.pk),
        3.查询表中用户拥有的权限 permissions = Role.objects.filter(user=user).values('permissions__url').distinct() #去重
        4.遍历permissions保存列表格式，保存到session中  requeset.session['premissios_list']=premissios_list
    中间件:
        1.获取到访问路径
        2.设置白名单的同时需要注意admin
        3.校验是否登陆过,判断session中有没有值，如果没有返回 登陆路径
        4.校验权限，判断session中有没有对应的权限
            for reg in premissions_list:
                reg='^%s$' %reg
                rul = re.search(reg,current_path)
                if rul:
                    return Nnoe #放行