<form action="/f1.html" method="post" id="fm"><p><input type="text" name="user">{{ obj.errors.user.0 }} #获取错误信息.0去掉换行</p><p><input type="password" name="pwd">{{ obj.errors.pwd.0 }}</p><p><input type="text" name="email">{{ obj.errors.email.0 }}</p><p><input type="text" name="age">{{ obj.errors.age.0 }}</p>{% csrf_token %}<input type="submit" value="提交">
</form>

from django import forms
from django.forms import fieldsclass F1Form(forms.Form):#下面数据字段名，对于前端表单中nameuser = fields.CharField(max_length=18,min_length=6,required=True,error_messages={'required':"用户名不为空",'min_length':"太短了",'max_length':"太长了",})pwd = fields.CharField(required=True,min_length=32)age = fields.IntegerField(required=True,error_messages={'invalid':"不对"})email = fields.EmailField(required=True,min_length=6)def f1(req):if req.method == "GET":return render(req,"f1.html")else:#检测是否为空#检测格式是否正确obj = F1Form(req.POST)if obj.is_valid():#验证成功return HttpResponse("ok")else:return render(req,"f1.html",{"obj":obj})

def f1(req):if req.method == "GET":obj = F1Form()return render(req,"f1.html",{"obj":obj})

<form action="/f1.html" method="post" id="fm"><p>{{ obj.user }}{{ obj.errors.user.0 }} #因为get请求中没有在form组件中传入值，所以不会产生相关错误信息，为空，不显示</p><p>{{ obj.pwd }}{{ obj.errors.pwd.0 }}</p><p>{{ obj.email }}{{ obj.errors.email.0 }}</p><p>{{ obj.age }}{{ obj.errors.age.0 }}</p>{% csrf_token %}<input type="submit" value="提交"><input type="button" value="ajax提交" οnclick="submitAjaxForm();">
</form>

　　    <form action="/add_user.html" method="post"><p>{{ obj.username }}{{ obj.errors.username }}</p><p>{{ obj.email }}{{ obj.errors.email }}</p>{% csrf_token %}<input type="submit" value="提交"></form>

class UserForm(Form):username = fields.CharField(max_length=32,required=True)email = fields.EmailField(required=True,min_length=10)

    if req.method == "POST":obj = UserForm(req.POST)　　#前端name和form字段一致时，可以直接传递req.POSTif obj.is_valid():User.objects.create(**obj.cleaned_data) #form字段和models字段一致时，可以直接将检验成功的数据传入return redirect("add_user.html")

def edit_user(req):data = models.user.objects.filter(id=req.GET.get("nid")).first()obj = UserForm({"username":data.username,"email":data.email}return render("edit_user.html",{"obj":obj})　　#会在obj中添加上默认数据

field_test = fields.CharField(required=True,max_length=32,min_length=16,error_messages={'required':"必须填写"},#widget = widgets.Select(choices=[(1,'aa'),(2,'dd'),]),#定制html插件，就是将该字段设置为select表单格式label="用户名",# initial="ccc", #只能对text格式设置，对于select等有其他方法help_text="fawf", #帮助文本show_hidden_initial=True, #隐藏框validators=[],#自定义验证规则disabled=True,  #设置不可编辑　　　　 localize = True, #设置支持本地化　　　　 label_suffix="fawf", #设置label后缀 )

<p>{{ obj.field_test.label }}{{ obj.field_test }}{{ obj.field_test.email }}</p>

{{ obj.as_p }}

file = fields.FileField(required=True)

注意上传文件需要enctype = "mulipart/form-data"
{{ obj.file }}

obj = TestForm(req.POST,req.FILES) #含文件上传时需要将文件传入

city = fields.ChoiceField(choices = [(1,"aa"),(2,"bb"),(3,"cc"),],　　　　　initial = 2, #默认第二项
)

默认设置：TestForm({"city":3}) #默认第三个选中

initial=[1,2,]设置默认值多个

coerce = lambda x: int(x)将字符串转整型

fields.COmboField(fields.CharField(max_length=30),fields.EmailField(required=True),)