title: save model int() argument must be a string or a number, not 'tuple'
body: <p>I have two forms I sent to a template and when I got them all models were retrieved and saved, but the last model takes all the other models and save itself, also it does not save itself. I get an error like this below. Can anyone help me out please?</p>
  
  <pre><code>Exception Type:  TypeError
  Exception Value:  int() argument must be a string or a number, not 'tuple'
  </code></pre>
  
  <p>I tracked it down and the problem look like just one in put from the form there is how it look from the form</p>
  
  <pre><code>class AForm(ModelForm):
      mentancy_fee = forms.IntegerField(required=False)
  </code></pre>
  
  <p>and here his its defination from the model</p>
  
  <pre><code>class AgentLandLordContract(models.Model):
      mentancy_fee = models.IntegerField(default=0,blank=True,null = True)
  </code></pre>
  
  <p>so why is this form field returning a tuple and not an it.I blocked out just this filed from the form and all is well</p>