How to change empty Booleans to false in mongodb?

Question

MongoDB

Let's say we have this simple form:

<form action="/add">
  <input type="checkbox" name="placed">
</form>

And such a scheme:

let schema = new Schema({
  placed: {
    type: Boolean,
    default: false,
    required: true
  }
});

When submitting this form, if the checkbox is active (checked), then everything is saved as it should (placed === true). But if you uncheck the checkbox, then placed in the database does not change to false.
The code is built in such a way that if you uncheck the checkbox, then the placed field is not sent at all.
How can I make it so that when an empty field of type Boolean is received, it is automatically saved as false in mongo?
No change in HTML

Answer 1

I solved the issue by inventing the bicycle:
I forcibly added all unchecked checkboxes to FormData via append with a value of false.
More or less like this:

let data = new FormData(form);
let checkboxes = form.querySelectorAll("input[type='checkbox']");

for (let i = checkboxes.length - 1; i >= 0; i--) {
  data.append(checkboxes[i].name, checkboxes[i].checked);
}

This is of course redundant code, but I did not find another solution :(

Answer 2

Your placed field is required - required: true, so if nothing comes, then there will be no changes. Try to remove required: true, then if nothing comes it will be false