Django中用 form 实现登录注册

 

1、forms模块
将Models和Forms结合到一起使用，将Forms中的类和Models中的类关联到一起，实现属性的共享
1、在forms.py中创建class，继承自forms.ModelForm
2、创建内部类：Meta，关联Form和Model

属性：
1、model：指定要关联的Model类
2、fields：指定从Model中取哪些字段生成控件
1、取值 "__all__",全部的属性都要生成控件
2、取值 列表或元组，声明允许生成控件的属性名称
3、labels：每个属性所关联的label，取值为字典
labels = {
"属性名1","文本1",
"属性名2","文本2"
}

 

url:

urlpatterns = [  2     url(r'^01_request/$',request_views),  3     url(r'^02_meta/$',meta_views),  4     url(r'^03_form/$',form_views),  5     url(r'^04_get_post/$',get_post_views),  6     url(r'^05_remark/$',remark_views),  7 
    url(r'^register/$',register_views),  9     url(r'^login/$',login_views), 10     url(r'^login_auto/$',login_auto_views), 11 
    url(r'01_login',login_form_views), 13     url(r'01_regiter',regiter_form_views), 14 ]

 

 

models.py

 

from django.db import models  2 
class Users(models.Model):  4     uname = models.CharField(max_length=30)  5     upwd = models.CharField(max_length=30)  6     uage = models.IntegerField()  7     uemail = models.EmailField()  8 
    def __str__(self): 10         return self.uname

 

 

views.py：

 

from django.shortcuts import render,HttpResponse  2 from django.views.decorators.csrf import csrf_protect  3 

def request_views(request):  6     # request,类型就是HttpRequest
    # request 封装的是与所有请求相关的内容
    # print(dir(request))

    scheme = request.scheme    #请求方案(协议)
    body = request.body        #请求主体
    path = request.path        #请求路径
    host = request.get_host()  #请求主机地址 / 域名
    method = request.method    #请求方法
    get = request.GET          #get的请求数据
    post = request.POST        #get的请求数据
    cookies = request.COOKIES  #cookie中的数据
    meta = request.META        #请求中的元数据
    return render(request,"01_request.html",locals())  20 

def meta_views(request):  23     print(request.META["HTTP_REFERER"])  24     return HttpResponse("request ok")  25 
def form_views(request):  27     return render(request,"03_form.html")  28 
@csrf_protect  30 def get_post_views(request):  31     if request.method == "GET":  32         name = request.GET.get("uname")  33         pwd = request.GET.get("upwd")  34         return HttpResponse("用户名："+name+"，用户密码："+pwd)  35     else:  36         name = request.POST["uname"]  37         pwd = request.POST["upwd"]  38         return HttpResponse ("用户名：" + name + "，用户密码：" + pwd)  39 
from .forms import *
def remark_views(request):  42     if request.method == "POST":  43         subject = request.POST["subject"]  44         return HttpResponse(subject)  45     form = RemarkForm()  46     return render(request,"05_remark.html",locals())  47 
from .form import *
def login_views(request):  50     if request.method == "GET":  51         forms = LoginForm()  52         return render(request,"login.html",locals())  53     else:  54         uname = request.POST["uname"]  55         upwd = request.POST["upwd"]  56         user = Users.objects.get(uname=uname)  57         if user:  58             if user.upwd == upwd:  59                 return HttpResponse("验证通过")  60             else:  61                 errmsg = "密码"
                return render (request, "login.html", locals ())  63         else:  64             errmsg = "用户名错误"
            return render(request,"login.html",locals())  66 

def login_auto_views(request):  69     if request.method == "GET":  70         form = LoginForm()  71         return render(request,"login.html",locals())  72     else:  73         form = LoginForm(request.POST)  74         if form.is_valid():  75             data = form.cleaned_data  76             print(data)  77             uname = data["uname"]  78             print(uname)  79             upwd = data["upwd"]  80             user = Users.objects.filter(uname=uname).first()  81             if user:  82                 if user.upwd == upwd:  83                     return HttpResponse("验证通过")  84                 else:  85                     errmsg = "密码错误"
                    return render (request,"login.html",locals())  87             else:  88                 errmsg = "用户名错误"
                return render(request,"login.html",locals())  90         return HttpResponse("信息错误")  91 

def register_views(request):  94     if request.method == "GET":  95         forms = RegisterForm()  96         return render(request,"register.html",locals())  97     else:  98         form = RegisterForm(request.POST)  99         if form.is_valid(): 100             data = form.cleaned_data 101             uname = data["uname"] 102             upwd = data["upwd"] 103             uage = data["uage"] 104             uemail = data["uemail"] 105             user = Users.objects.filter(uname=uname).first() 106             if user: 107                 errmsg = "用户名已存在"
                return render(request, "register.html", locals()) 109             else: 110                 user = Users (uname=uname, upwd=upwd, uage=uage, uemail=uemail) 111  user.save () 112 
                Users(**data).save() 114                 return HttpResponse("注册成功") 115 

def login_form_views(request): 118     if request.method == "GET": 119         form = UserLoginForm() 120         return render(request,"login_form.html",locals()) 121     else: 122         uname = request.POST["uname"] 123         upwd = request.POST["upwd"] 124         user = Users.objects.get(uname=uname) 125         if user: 126             if user.upwd == upwd: 127                 return HttpResponse("验证通过") 128             else: 129                 errmsg = "密码"
                return render (request, "login.html", locals ()) 131         else: 132             errmsg = "用户名错误"
            return render(request,"login.html",locals()) 134 


def regiter_form_views(request): 138     if request.method == "GET": 139         form = UserRegisterForm() 140         return render(request,"register_form.html",locals()) 141     else: 142         form = RegisterForm(request.POST) 143         if form.is_valid(): 144             data = form.cleaned_data 145             uname = data["uname"] 146             upwd = data["upwd"] 147             uage = data["uage"] 148             uemail = data["uemail"] 149             user = Users.objects.filter(uname=uname).first() 150             if user: 151                 errmsg = "用户名已存在"
                return render(request, "register.html", locals()) 153             else: 154                 user = Users (uname=uname, upwd=upwd, uage=uage, uemail=uemail) 155  user.save () 156 
                Users(**data).save() 158                 return HttpResponse("注册成功")

 

 

 

forms.py

 

from django import forms  2 
# 表示评论内容表单控件
# 评论标题 文本框
# 评论人邮件 type='Email'
# 题目 Select
# isSave type="checkbox"
class RemarkForm(forms.Form):  9     subject = forms.CharField(label="标题") 10     email = forms.EmailField(label="邮箱") 11     message = forms.CharField(label="内容",widget=forms.Textarea) 12     topic_choice = ( 13         ("1","好评"), 14         ("2","中评"), 15         ("3","差评") 16  ) 17     topic = forms.ChoiceField(label="评价",choices=topic_choice) 18     issave = forms.BooleanField(label="是否保存")

 

 

 

form.py

from django import forms  2 
class LoginForm(forms.Form):  4     uname = forms.CharField(label="用户名：")  5     upwd = forms.CharField(label="用户密码：",widget=forms.PasswordInput)  6 
class RegisterForm(forms.Form):  8     uname = forms.CharField(label="用户名称：",max_length=18)  9     upwd = forms.CharField(label="用户密码：",widget=forms.PasswordInput) 10     uage = forms.IntegerField(label="用户年龄：") 11     uemail = forms.EmailField(label="用户邮件：") 12 

from .models import *
# 创建class表示登录的表单，要关联Users实体类
class UserLoginForm(forms.ModelForm): 17     # 创建内部类Meta，关联Model
    class Meta: 19         # 1、指定关联的Model
        model = Users 21         # 2、指定要生成的控件
        fields = ["uname","upwd"] 23         # 3、指定每个控件对应的label
        labels = { 25             "uname":"用户名称", 26             "upwd":"用户密码"
 } 28 class UserRegisterForm(forms.ModelForm): 29     # 创建内部类Meta，关联Model
    class Meta: 31         # 1、指定关联的Model
        model = Users 33         # 2、指定要生成的控件
        fields = "__all__"
        # 3、指定每个控件对应的label
        labels = { 37             "uname":"用户名称", 38             "upwd":"用户密码", 39             "uage":"用户年龄", 40             "uemail":"用户邮箱"
        }

 

 

 

 

 

 

login.html：

 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>用户登录</title>
</head>
<body>
    <p>{{ errmsg }}</p>
    <form action="/login/" method="post">
     {% csrf_token %} 11         {% for form in forms %} 12             <p>{{ form.label }}{{ form }}</p>
        {% endfor %} 14         <p><input type="submit" value="登录"></p>
    </form>

==========================================================
    <p>{{ errmsg }}</p>
    <form action="/login_auto/" method="post">
     {% csrf_token %} 21         {% for form in forms %} 22             <p>{{ form.label }}{{ form }}</p>
        {% endfor %} 24         <p><input type="submit" value="登录"></p>
    </form>
</body>
</html>

 

 

register.html

 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>用户登录</title>
</head>
<body>
    <p>{{ errmsg }}</p>
    <form action="/register/" method="post">
     {% csrf_token %} 11         {% for form in forms %} 12             <p>{{ form.label }}{{ form }}</p>
        {% endfor %} 14         <p><input type="submit" value="注册"></p>
    </form>
</body>
</html>

 

 

 

 

login_form.html：

 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
     <p>{{ errmsg }}</p>
    <form action="/01_login/" method="post"> {% csrf_token %} {{ form.as_p }} <p><input type="submit" value="登录"></p>
    </form>

</body>
</html>

 

 

  register_form.html：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
     <p>{{ errmsg }}</p>
    <form action="/01_regiter/" method="post">
        {% csrf_token %} 11  {{ form.as_p }} 12         <p><input type="submit" value="登录"></p>
    </form>

</body>
</html>