title: Django update form: does not conform to the required format, "yyyy-MM-dd"
body: <p>I am using Django in the backend to save a date that the user inputs. Then later, I want to allow the user to update that date input by bringing them to a new page, showing them the old date input, and allowing them to update it.</p>
  <p>I am using a datepicker input field for the frontend to easily allow the user to pick a date.</p>
  <p>After I input my date, and I go to the update page to change it, the datepicker input field on the update page is empty every time.</p>
  <p>In the console I see</p>
  <p><code>The specified value &quot;Jul. 4, 1776&quot; does not conform to the required format, &quot;yyyy-MM-dd&quot;.</code></p>
  <p>I think the problem is that when I am retrieving the date from the database it is coming in as a different format than the forntend wants it. The date is coming from the backend as Jul. 4, 1776 format and the frontend form needs it in 1776-07-04.</p>
  <p>I was wondering how I can fix this so both frontend and backend are happy, and the old date inputted by the user is shown in the update page datepicker input field</p>