django中的Form一般有两种功能：

• 输入html
• 验证用户输入

#!/usr/bin/env python# -*- coding:utf-8 -*-import refrom django import formsfrom django.core.exceptions import ValidationErrordef mobile_validate(value):    mobile_re = re.compile(r'^(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$')    if not mobile_re.match(value):        raise ValidationError('手机号码格式错误')class PublishForm(forms.Form):    # # user_type_choice = (    #     (0, u'普通用户'),    #     (1, u'高级用户'),    # )    user_type_choice = models.BookType.objects.values_list('id','caption')    user_type = forms.IntegerField(widget=forms.widgets.Select(choices=user_type_choice,                                                                  attrs={
    'class': "form-control"}))    title = forms.CharField(max_length=20,                            min_length=5,                            error_messages={
    'required': u'标题不能为空',                                            'min_length': u'标题最少为5个字符',                                            'max_length': u'标题最多为20个字符'},                            widget=forms.TextInput(attrs={
    'class': "form-control",                                                          'placeholder': u'标题5-20个字符'}))    memo = forms.CharField(required=False,                           max_length=256,                           widget=forms.widgets.Textarea(attrs={
    'class': "form-control no-radius", 'placeholder': u'详细描述', 'rows': 3}))    phone = forms.CharField(validators=[mobile_validate, ],                            error_messages={
    'required': u'手机不能为空'},                            widget=forms.TextInput(attrs={
    'class': "form-control",                                                          'placeholder': u'手机号码'}))    email = forms.EmailField(required=False,                            error_messages={
    'required': u'邮箱不能为空','invalid': u'邮箱格式错误'},                            widget=forms.TextInput(attrs={
    'class': "form-control", 'placeholder': u'邮箱'}))

 

def publish(request):    ret = {
    'status': False, 'data': '', 'error': '', 'summary': ''}    if request.method == 'POST':        request_form = PublishForm(request.POST)        if request_form.is_valid():            request_dict = request_form.clean()            print request_dict            ret['status'] = True        else:            error_msg = request_form.errors.as_json()            ret['error'] = json.loads(error_msg)    return HttpResponse(json.dumps(ret))

 

 

#!/usr/bin/env python# -*- coding:utf-8 -*-from django import formsfrom app_from import modelsclass Form1(forms.Form):    user = forms.CharField(        widget=forms.TextInput(attrs={'class': 'c1'}),        error_messages={'required': '用户名不能为空'},)    pwd = forms.CharField(max_length=4,min_length=2)    email = forms.EmailField(error_messages={'required': '邮箱不能为空', 'invalid': '邮箱格式错误'})    memo = forms.CharField(        widget=forms.Textarea()    )    # user_type_choice = (    #     (0, '普通用户'),    #     (1, '高级用户'),    # )    user_type_choice = models.BookType.objects.values_list('id','caption')    book_type = forms.CharField(        widget=forms.widgets.Select(choices=user_type_choice,attrs={'class': "form-control"}))    def __init__(self,*args, **kwargs):        """        这么写的目的是为了在更新数据库的时候每次都会执行这个方法        :param args:         :param kwargs:         """        super(Form1, self).__init__(*args, **kwargs)        self.fields['book_type'] =  forms.CharField(            widget=forms.widgets.Select(choices=models.BookType.objects.values_list('id','caption'),attrs={'class': "form-control"}))

 加了验证码的表单验证

 

下载这两个文件请点击--》

 

 

from django.shortcuts import render,HttpResponse,HttpResponseRedirect# Create your views here.from app01.forms import Form1import iofrom check_code import check_codedef check_coder(request):    mstream = io.BytesIO()    img, code = check_code.create_validate_code()    img.save(mstream,'GIF')    request.session["CheckCode"] = code    # print(mstream.getvalue())    return HttpResponse(mstream.getvalue())def login(request):    if request.method == 'POST':        print("aaa")        f = Form1(request.POST)        if f.is_valid():            code_sess = request.session.get('CheckCode',None)            """            思路：首先获取session，然后获取验证码的内容，全部大写            """            code = f.cleaned_data['check_code']            user = f.cleaned_data['user']            print(code_sess,code)            if code.upper() == code_sess.upper():                print("验证码正确")                print(code,user)                return HttpResponseRedirect('/index/')        else:            print('bb')            print(f.errors)            return render(request,'login.html',{
    'error':f.errors,"ccc":"或者验证码错误",'form':f})    else:        f = Form1()        return render(request,'login.html',{
    'form':f})

 

#!/usr/bin/env python# -*- coding:utf-8 -*-from django import forms# from app_from import modelsclass Form1(forms.Form):    user = forms.CharField(        widget=forms.TextInput(attrs={
    'class': 'c1'}),        # error_messages={
    'required': '用户名不能为空'},    )    check_code = forms.CharField(        label='验证码',        max_length=4,        error_messages={
    'required': u'验证码不能为空', 'invalid': u'验证码不正确'},    )

 

{% extends "temp.html" %}{
     % block login %}    
      
        
       
                    {
     {form.user}}            {
     % if error.user.0 %}                
        {
    {error.user.0}}            {
     % endif %}            
        
                         {
     {form.check_code}}                {
     % if error.check_code.0 %}                    
         {
    { ccc }}                {
     % endif %}                
                     
        
        
       
        
       
            
                
       
    
      
        {
     % endblock %}