title: Default Modelform field value initially set
body: <p>Im trying to specify a default value for my form field <code>domainNm</code> when the form is initially loaded.</p>
  
  <p>I have:
  <strong>form</strong></p>
  
  <pre><code>   class SubmitDomain(ModelForm):
          class Meta:
              model = Tld #Create form based off Model for Tld
              fields = ['domainNm',]
  
      def clean_domainNm(self):
          cleanedDomainName = self.cleaned_data.get('domainNm')
          if Tld.objects.filter(domainNm=cleanedDomainName).exists():
              errorMsg = u"Sorry that domain is not available."
              raise ValidationError(errorMsg)
          else:
              return cleanedDomainName
  
      ## This creates the form.
      form = SubmitDomain()
  </code></pre>
  
  <p><strong>Model</strong></p>
  
  <pre><code>class Tld(models.Model):
      domainNm = models.CharField( )   #add a call in here?
  </code></pre>
  
  <p>I tried searching google a lot before posting this, but cannot seem to find an example of something so basic.</p>
  
  <p>Any help is much appreciated. Thanks.</p>