Django项目开发案例教程【可在此基础上进行开发】

from django.shortcuts import render,HttpResponse,redirect # Create your views here. def index(request): return HttpResponse("主页！") def user_index(request): name ="战胜" roles = ["管理员","用户","游客"] users = {"小明":10,"小红":20,"小王":30} return render(request,"user/index.html",{"name":name,"roles":roles,"users":users}) def user_login(request): if request.method=="GET": return render(request,"user/login.html") else: name = request.POST.get("name") password = request.POST.get("password") print(name,password) return HttpResponse("登录成功") from user.models import UserInfo def orm_test(request): # # 1. 添加数据 # UserInfo.objects.create(name="战胜1",password="123456",age=18) # UserInfo.objects.create(name="战胜2",password="123456",age=18) # UserInfo.objects.create(name="战胜3",password="123456",age=18) # 2. 删除数据 # UserInfo.objects.filter(id=1).delete() # UserInfo.objects.all().delete() # 3. 查询数据 # userList = UserInfo.objects.all() #所有数据 user = UserInfo.objects.filter(id=2) # 获取一条数据 print(user) # 4.更新 # UserInfo.objects.filter(name="战胜2").update(age=23) return HttpResponse("ORM操作成功") from user.models import UserInfo,UserRole # 【权限列表】 def role_list(request): role_list = UserRole.objects.all() return render(request,"user/role_list.html",{"role_list":role_list}) # 【添加权限】 def role_add(request): if request.method=="GET": return render(request,"user/role_add.html") else: typeName = request.POST.get("typeName") print(typeName) UserRole.objects.create(type=typeName) return redirect("/role/list") def role_edit(request,rid): if request.method=="GET": print(rid) role = UserRole.objects.filter(id=rid).first() return render(request,"user/role_edit.html",{"role":role}) else: print(rid) typeName = request.POST.get("typeName") print(typeName) UserRole.objects.filter(id=rid).update(type=typeName) return redirect("/role/list") def role_delete(request): rid = request.GET.get("rid") print(rid) UserRole.objects.filter(id=rid).delete() return redirect("/role/list") ########################### ModelForm ################### # 【用户列表】 def user_list(request): # 搜索 q_name = request.GET.get("q","") data_dict = {} if q_name: data_dict["name__contains"] = q_name user_list = UserInfo.objects.filter(**data_dict) return render(request,"user/user_list.html",{"user_list":user_list,"q_name":q_name}) from django import forms from django.core.exceptions import ValidationError from django.core.validators import RegexValidator # 【定义一个添加表单内容】 class UserAddModelForm(forms.ModelForm): #验证方法一：添加校验条件 # name = forms.CharField(min_length=3,label="用户名") name = forms.CharField(label="用户名",validators=[RegexValidator(r'^1[3-9]\d{9}$','手机号格式错误')]) confirm_password = forms.CharField(label="确认密码",widget=forms.PasswordInput(render_value=True)) # 验证方法二：账号的验证 def clean_name(self): text_name = self.cleaned_data["name"] #判断添加账号是否重复 exists = UserInfo.objects.filter(name=text_name).exists() if exists: raise ValidationError("账号已经存在") if len(text_name) < 3: raise ValidationError("长度不能小于3！") return text_name # 密码的验证 def clean_confirm_password(self): # 这是是验证确认密码而不是密码，因为确认密码在后面才出现 print(self.cleaned_data) pwd = self.cleaned_data.get("password") confirm_pwd = self.cleaned_data.get("confirm_password") if pwd != confirm_pwd: raise ValidationError("两次密码不一致！") return pwd class Meta: model = UserInfo # 将要生成的表单项 fields = ["name","password","confirm_password","age","account","create_date","gender","role"] widgets = { "password": forms.PasswordInput(render_value=True), } def __init__(self,*args,**kwargs): super().__init__(*args,**kwargs) # 循环找到所有的插件添加样式 for name,filed in self.fields.items(): if filed.widget.attrs: filed.widget.attrs["class"] = "form-control" filed.widget.attrs["placeholder"] = filed.label else: filed.widget.attrs = {"class":"form-control","placeholder":filed.label} # 【定义一个编辑表单内容】 class UserEditModelForm(forms.ModelForm): #验证方法一：添加校验条件 # name = forms.CharField(min_length=3,label="用户名") name = forms.CharField(label="用户名",validators=[RegexValidator(r'^1[3-9]\d{9}$','手机号格式错误')]) # 验证方法二： def clean_name(self): row_id = self.instance.pk # 当前操作行的id print(row_id) text_name = self.cleaned_data["name"] exists = UserInfo.objects.exclude(id=row_id).filter(name=text_name).exists() if exists: raise ValidationError("账号已经存在") if len(text_name) < 3: raise ValidationError("长度不能小于3！") return text_name class Meta: model = UserInfo # 将要生成的表单项 fields = ["name","password","age","account","create_date","gender","role"] # widgets = { # "name": forms.TextInput(attrs={"class":"form-control"}), # "password": forms.PasswordInput(attrs={"class":"form-control"}), # } def __init__(self,*args,**kwargs): super().__init__(*args,**kwargs) # 循环找到所有的插件添加样式 for name,filed in self.fields.items(): if filed.widget.attrs: filed.widget.attrs["class"] = "form-control" filed.widget.attrs["placeholder"] = filed.label else: filed.widget.attrs = {"class":"form-control","placeholder":filed.label} def user_add(request): if request.method == "GET": # GET获取add页面 form = UserAddModelForm() return render(request,"user/user_add.html",{"form":form}) else: # POST提交add数据 form = UserAddModelForm(data=request.POST) if form.is_valid(): print(form.cleaned_data) # 数据合法则保存到数据库 form.save() return redirect("/user/list/") else: print(form.errors) return render(request, "user/user_add.html", {"form": form}) def user_edit(request,uid): if request.method=="GET": usr_obj = UserInfo.objects.filter(id=uid).first() #数据库中获取数据 form = UserEditModelForm(instance=usr_obj) return render(request, "user/user_edit.html", {"form": form}) else: usr_obj = UserInfo.objects.filter(id=uid).first() # 数据库中获取数据 form = UserEditModelForm(data=request.POST,instance=usr_obj) if form.is_valid(): form.save() return redirect("/user/list/") else: return render(request, "user/user_edit.html", {"form": form}) def user_delete(request): uid = request.GET.get("uid") UserInfo.objects.filter(id=uid).delete() return redirect("/user/list")