class UserInfo(models.Model):
    name=models.CharField(max_length=32)
    pwd=models.CharField(max_length=32)
    email=models.EmailField()
    tel=models.CharField(max_length=32)

 1 class Userform(forms.Form):
 2     name = forms.CharField(min_length=4)
 3     pwd = forms.CharField(min_length=4)
 4     re_pwd = forms.CharField(min_length=4)
 5     email = forms.EmailField()
 6     tel = forms.CharField(label=‘电话‘)
 7 
 8 def register(request):
 9 
10     if request.method=="POST":
11         form=UserForm(request.POST)        # 会按照相对应的字段进行匹配，字段可以在Userform的字段基础上多，不会出错，但是已有字段一个也不能少
12         if form.is_valid():　　　　　　　　　 # 如果校验通过
13             print(form.cleaned_data)       # 所有干净的字段以及对应的值
14         else:
15             print(form.cleaned_data)       #
16             print(form.errors)             # ErrorDict : {"校验错误的字段":["错误信息",]}
17             print(form.errors.get("name")) # ErrorList ["错误信息",]
18         return HttpResponse("OK")
19     form=UserForm()
20     return render(request,"register.html",locals())

 1 <form action="" method="post" novalidate>         
 2                 {% csrf_token %}
 3                 <p>{{ form.name.label }}
 4                     {{ form.name }} <span>{{ form.name.errors.0 }}</span>
 5                 </p>
 6                 <p>
 7                     {{ form.pwd.label }}
 8                     {{ form.pwd }}<span>{{ form.pwd.errors.0 }}</span>
 9                 </p>
10                 <div>
11                     确认密码{{ form.re_pwd }}<span>{{ form.re_pwd.errors.0 }}</span>
12                 </div>
13                 <div>
14                     邮箱<input type="email" class="form-control" name="email"><span>{{ form.email.errors.0 }}</span>
15                 </div>
16                 <div>
17                     电话<input type="text" class="form-control" name="tel"><span>{{ form.tel.errors.0 }}</span>
18                 </div>
19                 <input type="submit" class="btn btn-success">
20             </form>

from django.shortcuts import render, HttpResponse
# form组件
from django import forms
from django.forms import widgets


class Userform(forms.Form):
    name = forms.CharField(min_length=4, label=‘用户名‘, error_messages={"required": "不能为空"},
                           widget=widgets.TextInput(attrs={‘class‘: ‘form-control‘}))
    pwd = forms.CharField(min_length=4, label=‘密码‘,widget=widgets.PasswordInput(attrs={‘class‘: ‘form-control‘}), error_messages={‘required‘: ‘不能为空‘})
    re_pwd = forms.CharField(min_length=4,widget=widgets.TextInput(attrs={‘class‘: ‘form-control‘}))
    email = forms.EmailField(widget=widgets.EmailInput(attrs={‘class‘: ‘form-control‘}))
    tel = forms.CharField(label=‘电话‘,widget=widgets.TextInput(attrs={‘class‘: ‘form-control‘}))


def reg(request):
    if request.method == ‘POST‘:

        form = Userform(request.POST)  # 模板中的name属性对应Userform的每一个字段，字段名与响应的name属性一致
        print(form.is_valid())
        if form.is_valid():
            print(form.cleaned_data)
        else:
            print(form.cleaned_data)
            print(form.errors)
            # print(form.errors.get(‘name‘)) # name不传值 <ul class="errorlist"><li>This field is required.</li></ul>
            # print(type(form.errors.get(‘name‘))) # <class ‘django.forms.utils.ErrorList‘>
            # print(form.errors.get(‘name‘)[0])  # 获取错误信息 This field is required.
            return render(request, ‘reg.html‘, locals())
    form = Userform()
    return render(request, ‘reg.html‘, {‘form‘: form})

# forms组件
from django.forms import widgets

wid_01=widgets.TextInput(attrs={"class":"form-control"})
wid_02=widgets.PasswordInput(attrs={"class":"form-control"})

from django.core.exceptions import ValidationError
class UserForm(forms.Form):
    name=forms.CharField(max_length=32,
                         widget=wid_01
                         )
    pwd=forms.CharField(max_length=32,widget=wid_02)
    r_pwd=forms.CharField(max_length=32,widget=wid_02)
    email=forms.EmailField(widget=wid_01)
    tel=forms.CharField(max_length=32,widget=wid_01)


    # 局部钩子
    def clean_name(self):
        val=self.cleaned_data.get("name")
        if not val.isdigit():
            return val
        else:
            raise ValidationError("用户名不能是纯数字!")

    # 全局钩子

    def clean(self):
        pwd=self.cleaned_data.get("pwd")
        r_pwd=self.cleaned_data.get("r_pwd")

        if pwd==r_pwd:
            return self.cleaned_data
        else:
            raise ValidationError(‘两次密码不一致!‘)


def register(request):

    if request.method=="POST":
        form=UserForm(request.POST)
        if form.is_valid():
            print(form.cleaned_data)       # 所有干净的字段以及对应的值
        else:
            clean_error=form.errors.get("__all__")

        return render(request,"register.html",locals())
    form=UserForm()
    return render(request,"register.html",locals())

<form action="" method="post" novalidate>
            {% csrf_token %}

            {% for field in form %}
                <div>
                    <label for="">{{ field.label }}</label>
                    {{ field }}
                    <span class="pull-right" style="color: red">
                          {% if field.label == ‘R pwd‘ %}
                          <span>{{ clean_error.0 }}</span>
                          {% endif %}
                          {{ field.errors.0 }}
                    </span>
                </div>
            {% endfor %}
            <input type="submit" class="btn btn-default">

</form>