Django使用form组件写注册页面

html页面代码

    <div class="page-header">
        <h1>方法2
            <small>阿波罗图书管理系统</small>
        </h1>
    </div>
    <form id="b_reg" action="{% url 'b_reg' %}" method="POST">
        {% csrf_token %}
        <label for="usr">usr</label>
        <input type="text" name="usr" id="usr">
        <span>{{ errors.usr.0 }}</span>
        <br><br>
        <label for="pwd">pwd</label>
        <input type="password" name="pwd" id="pwd">
        <span>{{ errors.pwd.0 }}</span>
        <br><br>
        <label for="age">age</label>
        <input type="text" name="age" id="age">
        <span>{{ errors.age.0 }}</span>
        <br><br>
        <label for="email">email</label>
        <input type="text" name="email" id="email">
        <span>{{ errors.email.0 }}</span>
        <br><br>
        <input type="submit" value="提交"/>
        <input type="button" value="Ajax提交" id="Ajax">
        <br><br>
    </form>

form组件代码(这个代码放在views.py文件中即可)

# ################### form组件验证 ###################
class UserInfoForm(forms.Form):
    usr = fields.CharField(
        max_length=18,
        min_length=5,
        required=True,
        error_messages={
            'required': '用户名不能为空',
            'max_length': '用户名太长了,大于18位',
            'min_length': '用户名太短了,少于8位'
        }
    )
    pwd = fields.CharField(
        required=True,
        min_length=5,
        max_length=32,
        error_messages={
            'required': '密码不能为空',
            'invalid': '密码格式不正确',
            'max_length': '密码不能超过32位',
            'min_length': '密码不能低于8位',
        }
    )
    age = fields.IntegerField(
        required=True,
        error_messages={
            'required': '年龄不能为空',
            'invalid': '年龄必须是数字',
        }
    )
    email = fields.EmailField(
        required=True,
        min_length=8,
        error_messages={
            'required': '邮箱不能为空',
            'invalid': '邮箱格式不正确',
        }
    )

    def clean_usr(self):
        val = self.cleaned_data.get("usr")
        ret = UserInfo.objects.filter(usr=val).first()
        if not ret:
            return val
        else:
            raise ValidationError("用户名已存在！")

    def clean_pwd(self):
        val = self.cleaned_data.get("pwd")
        if val.isdigit():
            raise ValidationError("密码不能是纯数字！")
        else:
            return val

    def clean_email(self):
        val = self.cleaned_data.get('email')
        if val.endswith('163.com'):
            return val
        else:
            raise ValidationError('请填写163邮箱')

注册的视图函数(此处代码放在views.py中即可)

def b_reg(request):
    # 处理GET请求
    if request.method == "GET":
        return render(request, "b_reg.html")
    # 处理POST请求
    else:
        # 处理POST请求
        obj = UserInfoForm(request.POST)
        # 是否全部验证成功
        if obj.is_valid():
            # 用户提交的数据
            print(obj.changed_data)
            # 将信息写入到数据库
            UserInfo.objects.create(**obj.cleaned_data)
            # 获取注册用户名
            user = request.POST.get("usr")
            # 获取注册用户密码
            pwd = request.POST.get("pwd")
            # 创建用户
            User.objects.create_user(username=user, password=pwd)
            # 注册成功,重定向到登录页面
            return redirect("/book/b_login/")

        else:
            # 正确信息
            clean_data = obj.changed_data
            # 错误信息
            error_data = obj.errors

            return render(request, 'f_reg_gouzi.html', {'errors': error_data, 'clean_data': clean_data})

urls.py文件的配置

from django.urls import path, re_path, include
from book import views

urlpatterns = [
        re_path('^b_reg/', views.b_reg, name='b_reg'),
]

#此处使用了路由分发,上一次目录是/book/