If you are looking for automating this process, you can create a custom widget for the field. In the widget class you will define a render method in such a way that it will also return the event binding code.

class CustomWidget(forms.TextInput):



    class Media:

        #js here

        js = ('js/my_js.js',)



    def render(self, name, value, attrs = None)

         output = super(CustomWidget, self).render(name, value, attrs)

         #do what you want to do here

         output += ...

         return output