Django中 基于form的注册,基于ajax的登录

1 form.py中写register的的form组件

from django import  forms
class Register(forms.Form):

    # 注册的form

    username = forms.CharField(
        max_length=32,min_length=6,
        label='姓名',
        error_messages={
           'required':'用户名不能为空',
           'invalid':'用户名输入格式有误',
           'min_length':'用户名最小长度为6位',
           'max_length':'用户名最小长度为6位',
        },
        widget=forms.TextInput(
        attrs={
            'placeholder':'请输入用户名'
        }
                               ))

    password= forms.CharField(
        max_length=32,
        min_length=6,
        label='密码',
        error_messages={
            'required':'密码不能为空',
            'invalid':'密码输入格式有误',
            'min_length':'密码最短6位',
            'max_lenth':'密码不能超过32位',

        },
        widget=forms.PasswordInput(
            attrs={
                'placeholder':'请输入密码'
                   }
        ),

    )

    repassword = forms.CharField(
        max_length=32,
        min_length=6,
        label='确认密码',
        error_messages={
            'required': '确定密码不能为空',
            'invalid': '确定密码格式错误',
            'min_length': '确定密码最短6位',
            'max_length': '确定密码最长32位',
        },
        widget=forms.widgets.PasswordInput(attrs={"placeholder": "请输入确认密码"}

        ),

    )

    telephone = forms.CharField(
        max_length=11,
        label="手机号码",
        required=False,
        error_messages={
        },
        validators=[RegexValidator(r'^[0-9]{11}$', '请输入11位手机号码'),
                    RegexValidator(r'^(13|14|15|17)[0-9]{9}$', '手机号码必须以13/14/15/17开头')],
        widget=forms.widgets.TextInput(attrs={"placeholder": "请输入手机号码"}),
    )

    email = forms.EmailField(
        label='邮箱',
        error_messages={
            'invalid': '邮箱格式错误',
        },
        required=False,
        widget=forms.widgets.TextInput(attrs={"placeholder": "请输入邮箱"}),
    )

    def clean_username(self):
        username = self.cleaned_data.get('username')
        ret = models.UserInfo.objects.filter(username=username).exists()
        print(ret)
        if ret:
            raise  ValidationError('该用户名已存在')
        else:
           return username

    def clean_repassword(self):
        password = self.cleaned_data.get('password')
        repassword = self.cleaned_data.get('repassword')
        if password != repassword:
            raise ValidationError('密码不一致')
        else:
            return repassword

    def clean_phone(self):
        value = self.cleaned_data.get("phone")
        if models.UserInfo.objects.filter(phone=value).exists():
            raise ValidationError("该手机号码已经注册")
        else:
            return value

    def __init__(self,*args,**kwargs):
        super().__init__(*args,**kwargs)
        for field in iter(self.fields):

            self.fields[field].widget.attrs.update({
                'class': 'form-control'
            })

2 写注册的视图函数

from web import form
def register(request):
    """
    用户的注册
    :param request:
    :return:
    """
    if request.method =='GET':
        form_obj = form.Register()
        return render(request,'register.html',{'form_obj':form_obj})
    else:
        form_obj = form.Register(request.POST)

        if form_obj.is_valid():
            data = form_obj.cleaned_data
            data.pop('repassword')
            roles = data.pop('roles')
            # roles = request.POST.getlist()
            user_obj = models.UserInfo.objects.create_user(**data)
            user_obj.roles.set(roles)

            return redirect('login')
        else:
            return render(request,'register.html',{'form_obj':form_obj})

3 登录函数:

from PIL import Image,ImageDraw,ImageFont
from io import BytesIO

# 随机数
def get_random_color():
    return (random.randint(0, 255),
            random.randint(0, 255),
            random.randint(0, 255))

# 验证码
def get_valid_img(request):
    # 图片对象
    width = 190
    height = 35
    img_obj = Image.new('RGB', (width, height), get_random_color())
    # 画笔对象
    draw_obj = ImageDraw.Draw(img_obj)
    # 获取字体
    font_path = os.path.join(settings.BASE_DIR, "web/static/font/font.ttf")
    # 字体对象
    font_obj = ImageFont.truetype(font_path, 32)
    # 获取用户输入验证码的内容
    sum_str = ''
    for i in range(4):
        a = random.choice(
            [str(random.randint(0, 9)),
             chr(random.randint(97, 122)),
             chr(random.randint(65, 90))])
        sum_str += a
    # 通过画笔对象，添加文字
    draw_obj.text((40, 0), sum_str, fill=get_random_color(), font=font_obj)

    # 添加噪线
    for i in range(3):
        # 两点一线
        x1 = random.randint(0, width)
        x2 = random.randint(0, width)
        y1 = random.randint(0, height)
        y2 = random.randint(0, height)
        draw_obj.line((x1, y1, x2, y2), fill=get_random_color())
    # 添加噪点
    for i in range(3):
        draw_obj.point([random.randint(0, width), random.randint(0, height)], fill=get_random_color())
        x = random.randint(0, width)
        y = random.randint(0, height)
        draw_obj.arc((x, y, x + 8, y + 8), 0, random.randint(0, 360), fill=get_random_color())
    # from io import BytesIO
    # 操作内存的手柄
    f = BytesIO()
    img_obj.save(f, 'png')
    data = f.getvalue()

    # 将验证码存在各用户自己的session中
    request.session["valid_str"] = sum_str
    print(sum_str)
    return HttpResponse(data)

def login(request):
    """
    用户登录

    相应的状态码:
    成功:1000
    验证码失败:1001
    用户名密码失败:1002
    :param request:
    :return:

    """
    response_msg = {'code':None,'msg':None}
    if request.method == 'GET':
        return render(request,'login.html')
    else:
        username = request.POST.get('username')
        password = request.POST.get('password')

        #得到验证码
        valid_core = request.POST.get('valid_core')

        if valid_core.upper() == request.session.get('valid_str').upper():

            #验证是否登录成功
            user_obj = auth.authenticate(username=username,password=password)

            if user_obj:
                #将用户的信息放入session中
                #session注入

                persission_input(request,user_obj)

                response_msg['code']=1000
                response_msg['msg']='用户名密码正确'
            else:
                response_msg['code'] = 1002
                response_msg['msg'] = '用户名或密码错误'

        else:
            response_msg['code']=1001
            response_msg['msg']='验证码输入错误'

    return JsonResponse(response_msg)

def logout(request):
    """退出登录,并清除session"""
    auth.logout(request)
    return redirect('login')

4 register的html   register.html:

{% load static %}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="{% static 'bootstrap-3.3.7-dist/css/bootstrap.min.css' %}">
</head>
<body>

<h1>注册界面</h1>
<div class="container-fluid">
    <div class="row">
        <div class="col-md-6 col-md-offset-3">
            <form action="{% url 'register' %}" method="post" novalidate>
            {% csrf_token %}
               {% for foo in form_obj %}
                      <div class="form-group">
                <label for="{{ foo.id_for_label }}"  class="control-label"> {{ foo.label }}</label>
                   {{ foo }}

                   <span class="text-danger"> {{ foo.errors.0 }}</span>
                </div>
               {% endfor %}
                <input type="submit" class="btn btn-primary pull-right" value="注册">
        </form>
     </div>
    </div>
</div>

<script src="{% static 'bootstrap-3.3.7-dist/js/jquery-3.4.1.js' %}"></script>
<script src="{% static 'bootstrap-3.3.7-dist/js/bootstrap.min.js' %}"></script>
</body>
</html>

5 登录的html login.html

{% load staticfiles %}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="{% static 'bootstrap-3.3.7-dist/css/bootstrap.min.css' %}">
</head>
<body>

<h1>登录界面</h1>

<div class="container-fluid">
    <div class="row">
        {% csrf_token %}
        <div class="col-md-4 col-md-offset-4">
                <div class="form-group">
                    <label for="username" >用户名</label>
                    <input type="text" name = "username" id="username" class="form-control">

                </div>

                <div class="form-group">
                    <label for="password">密码</label>
                    <input type="password" name="password" id="password" class="form-control">
                </div>

                <div class="form-group">
                    <label for="valid_core">验证码</label>
                    <div class="row">
                        <div class="col-sm-6">

                    <input type="text" name="valid_core" id="valid_core" class="form-control"></div>

{#                        得到验证码#}
                        <div class="col-sm-6">
                            <img src="{%  url 'get_valid_img' %}" alt="" id="valid_core_img">
                    </div>

                    </div>
                </div>
                <span class="error"></span>

            <button type="button" class="btn btn-primary pull-right login">登录</button>

        </div>
    </div>
</div>

<script src="{% static 'bootstrap-3.3.7-dist/js/jquery-3.4.1.js' %}"></script>
<script src="{% static 'bootstrap-3.3.7-dist/js/bootstrap.min.js' %}"></script>

<script>
    $('.login').on('click',function () {
        console.log(111)
        var username = $('[name=username]').val();
        var password = $('[name=password]').val();
        var valid_core = $('[name=valid_core]').val();
        var csrf_token = $('[name=csrfmiddlewaretoken]').val()
        console.log(csrf_token)

        $.ajax({
            url:"{% url 'login' %}",
            type:'post',
            data:{
                username: username,
                password:password,
                valid_core:valid_core,
                csrfmiddlewaretoken:csrf_token

            },
            success:function (res) {
                if (res.code === 1000){
                    var href = location.search.slice(6);
                    if (href){

                        location.href = href
                    }else {
                        location.href ='{% url 'index' %}'
                    }

                }else {
                    $('.error').text(res.msg)
                }
            }

        })

    })

    $('#valid_core_img').click(function () {
        console.log($(this))
        $(this)[0].src +='?';

    })

</script>

</body>
</html>