title: Django: How to set DateField to only accept Today & Future dates
body: <p>I have been looking for ways to set my Django form to only accept dates that are today or days in the future. I currently have a jQuery datepicker on the frontend, but here is the form field to a modelform.</p>
  
  <p>Thanks for the help, much appreciated.</p>
  
  <pre><code>date = forms.DateField(
      label=_("What day?"),
      widget=forms.TextInput(),
      required=True)
  </code></pre>