Omit empty and optional values in form data

I have this request body:

...
requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              properties:
                name:
                  type: string
                nick:
                  type: string
...

If I send a request wihin Swagger UI with some name but with empty value in the nick field, the UI evaluates the request like this:

curl -X POST "address" -H "accept: application/json" -H "Content-Type: application/x-www-form-urlencoded" -d "name=vaclav&nick="

But I need not to have the nick field contained in the request body if the field is empty, like this:

curl -X POST "address" -H "accept: application/json" -H "Content-Type: application/x-www-form-urlencoded" -d "name=vaclav"

Can I mark a property field as optional and not sending if the field is empty? Unfortunately, my API does not accept empty values, but it is able to omit some post field if it is not included in a request.

[propi]

I would vote for adding a checkbox to all optional parameters within the Swagger UI (it could be checked by default). But, I need to have the option to uncheck this checbox and tell Swagger UI, that I don’t want to send this parameter in the HTTP request…

[leggsimon]

This doesn’t really solve the problem completely but, in case you didn’t know, you can provide another required property under schema which is a list of required properties e.g.

      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              properties:
                name:
                  type: string
                nick:
                  type: string
+              required:
+                - name

Which will render *required next to the required “name” field