@register.filter
def user_select_field(form, userid):
    """
    returns UserSelectionForm field for a user with userid
    """
key = str(userid)
if key not in list(form.fields.keys()):
    print('Key %s not found in dict' % key)
return None
boundField = forms.forms.BoundField(form, form.fields[key], key)
return str(boundField)
How to render django form field in template