title: How to access request.user from an admin ModelForm clean method?
body: <p>I'm doing some stuff on 'clean' on an admin ModelForm:</p>
  
  <pre><code>class MyAdminForm(forms.ModelForm):
      def clean(self):
          # Some stuff happens...
          request.user.message_set.create(message="Some stuff happened")
  
  class MyAdmin(admin.ModelAdmin):
      form = MyAdminForm
  </code></pre>
  
  <p>Other than the threadlocals hack - how do I access request.user to set a message? I can't pass it to the form constructor because doesn't get called from my code. </p>