下面的内容段是关于python+django实现的简单的表单验证的内容，应该能对大伙也有用途。

  
  



  

    
Form validation example
    {% if form.errors %}
    
Please correct the error{{ form.errors|pluralize }} below.
    {% endif %}
    

    

      
{% csrf_token %}

        

           Email subject:
           

            {{ form.subject }}
            {% if form.subject.errors %}
              
                {% for error in form.subject.errors %}{{ error }}{% endfor %}
              
            {% endif %}
          
        

        

          Email address:
          

          {{ form.email }}
            {% if form.email.errors %}
              
                {% for error in form.email.errors %}{{ error }}{% endfor %}
              
            {% endif %}
          
        

        

          Message:
          

            {{ form.message }}
            {% if form.message.errors %}
              
                {% for error in form.message.errors %}{{ error }}{% endfor %}
              
            {% endif %}
          
        

        

          

            
          
        
      
    
  



forms.py

from django import forms

class ContactForm(forms.Form):
  """
  define a contact form class
  """
  # this will be rendered like
  # 
  # valid if not empty
  subject = forms.CharField(widget=forms.TextInput(attrs={'size':'48', 'class':'form-control'}))
  # A CharField that checks that the value is a valid email address.
  email = forms.EmailField(widget=forms.TextInput(attrs={'size':'48', 'class':'form-control'}))
  message = forms.CharField(widget=forms.Textarea(attrs={'cols':50, 'rows': 5 , 'class':'form-control'}))

views.py

from django.shortcuts import render
from .forms import ContactForm

def contact(request):
  if request.method == 'POST':
    # get data from POST request to contactform
    form = ContactForm(request.POST)
  else:
    form = ContactForm()

  data = {
    'form': form,
  }
  return render(request, 'contact_form.html', data)