title: Django ModelForm Validation Not Working
body: <p>I want to make sure users fill all the fields before they are redirected to the next page. And if they don’t fill the fields it should raise an error telling them to fill the fields before they proceed. So to do that, I wrote the codes below. But the problem I’m facing is that when I didn’t fill the fields, it took me to the next page, instead of it to return me to the same page, and it didn’t raise any error.</p>
  
  <p>How can I make it validate those fields before taking users to the next page? </p>
  
  <p>Models</p>
  
  <pre><code>from django.core.exceptions import ValidationError
  
   class Memb(models.Model):
         slug=models.CharField(max_length=100)
         member=models.CharField(max_length=100)
  
         def __unicode__(self):
             return self.member, self.slug
  
         def clean_slug(self):
               data=self.cleaned_data['slug']
               if "Testy" not in data:
                   raise ValidationError("Enter the correct name for this field")
  
    class MembForm(ModelForm):
          class Meta:
               model=Memb
               fields=('slug','member') 
  </code></pre>
  
  <p>Views</p>
  
  <pre><code>def my_memb(request):
      if request.method=="POST":
              form=MembForm(request.POST)
              if form.is_valid():
                      data=form.cleaned_data
                      form.save()
              return HttpResponseRedirect('/good/')
      else:
              form=MembForm()
      return render_to_response('member.html',{'MembForm':MembForm}, context_instance=RequestContext(request))
  </code></pre>
  
  <p>Template</p>
  
  <pre><code> {% block content %}
       &lt;form action="" method="POST"&gt;
            {{MembForm.as_p}}
     &lt;input type="submit" value="Add"/&gt;
     &lt;/form&gt;
    {% endblock %}
  </code></pre>