(still unAnswered) django checkbox save yes or no in the database

  <form id="form" name="form">
    <input type="checkbox" value="1" name="Asthma" data-form-field="Option" class="form-check-input display-7" id="checkbox1"  title="Check if Student have Asthma">
    <input type="checkbox" value="1" name="Congenital" data-form-field="Option" class="form-check-input display-7" id="checkbox1" title="Check if Student have Congenital Anomalies">
    <input type="checkbox" value="1" name="Contact" data-form-field="Option" class="form-check-input display-7" id="checkbox1" title="Check if Student use Contact lens">
  </form>

i have this code in my html

<script type="text/javascript">
                        // when page is ready
                        $(document).ready(function() {
                             // on form submit
                            $("#form").on('submit', function() {
                                // to each unchecked checkbox
                                $(this + 'input[type=checkbox]:not(:checked)').each(function () {
                                    // set value 0 and check it
                                    $(this).attr('checked', true).val(0);
                                });
                            })
                        })
                    </script>

my problem is everytime i save into my database the result always automatic YES, even i unchecked the checkbox(NO) in the html. i dont know if i am doing right in my javascript

this is my views.py

    Asthma = request.POST['Asthma']
    Congenital = request.POST['Congenital']
    Contact = request.POST['Contact']
V_insert_data = StudentUserMedicalRecord( 
        Asthma=Asthma,
        CongenitalAnomalies=Congenital,
        ContactLenses=Contact
   )
 V_insert_data.save()

models.py

Asthma=models.BooleanField(null=True, blank=True, default=False)
CongenitalAnomalies=models.BooleanField(null=True,blank=True, default=False)
ContactLenses=models.BooleanField(null=True,blank=True, default=False)

html.py

even i insert record from my html is unchecked(No), the result always automatic "Yes" in my database, can you please fixed my javascript code? seems like its not working.

from (still unAnswered) django checkbox save yes or no in the database