title: Accessing request.GET or request.POST in Django Forms
body: <p>In django view, we often call forms and initialize it with request.GET and/or request.POST values <code>MyForm(request.GET) or MyForm(request.POST)</code>. How can I access it in form class?</p>
  
  <pre><code>class MyForm(forms.ModelForm):
    class Meta:
    #... more code
  
    def __init__(self, *args, **kwargs):
      super(MyForm, self).__init__(*args, **kwargs)
      #... how to access request.POST or request.GET here?
  </code></pre>