The main role of form is:

1. Form framework generation in html, 2. Validation data

https://www.cnblogs.com/zongfa/p/7709639.html

1. Create some data types in the model

class Users(models.Model):

   uname = models.CharField(max_length=30,unique=True,verbose_name="User name")

  upet = models.CharField(max_length=30,verbose_name="Nickname?")

   upawd = models.CharField(max_length=30,verbose_name="Password")

  email = models.EmailField(verbose_name="E-mail")

  url = models.URLField(verbose_name="Website")

2. Create new forms.py in model.py directory

There are two ways of writing:

 (1)Define the form model

from django import forms

class UserForm(forms.Form):
        uname = forms.CharField(max_length=100 ,label='User name')
        email = forms.EmailField(label='E-mail')
        upet = forms.CharField(max_length=30,required=False,label='Nickname?')  

       upawd = forms.CharField(label='Password',widget=forms.Textarea)
        url = forms.URLField(required=False ,label='Website')



(2)inherit model

from django.forms import ModelForm

from myblog.users.models import Users

class UsersForm(ModelForm):

        class Meta:

                model = Users

                fields = ('uname','upet', 'upawd','email','url')

3. Form validation in view view

def contact(request):
    if request.method == 'POST': 
        form = ContactForm(request.POST) 
        if form.is_valid(): 
              username=form.cleaned_data['uname']
              usernick=form.cleaned_data['upet']
              pawd1=form.cleaned_data['upawd']
              email=form.cleaned_data['email']
              weburl=form.cleaned_data['url']
			  Users(uname=username,upet=usernick,upawd=pawd1,
			  email=email,url=weburl).save()
              return HttpResponseRedirect('/index/') 
    	else:
    	

4. On the html page, the code is very simple, which django does well.

<form action="/contact/" method="post"> 

<table class="form-table">

    <!--{{ form.as_ul }}-->                            # This is the first way to write a form in <ul>.

   <!-- {{ form.as_p }}-->                            # This is the second way of writing, displaying the form in <p>.

     <!--{{ form.as_table }}-->                     # This is the third way to write a form in <table>.

    {% for field in form %}                          # This is the fourth way to write a form in circular form

         {{ field.label_tag }}:{{ field }} 

         {{ field.errors }}

     {% endfor %}

</table> 

<p class="submit"><input type="submit" name="submit" id="submit" class="button-primary" value="Registration information"  /></p> 

</form>