(De-) Serialize option into two fields

[Ruhrpottpatriot]

I have the following JSON given to me:

"report": bool
"report_url": string

I want to (de-)serialize it into a custom struct. The report url is optional and only considered if the report field is set to true. Now, I could write a struct that directly maps the above structure, i.e.

struct Reporter {
    report: bool,
    repoort_url: Option<String>,

However, this essentially duplicates the information that the report_url is not present and I'd rather write:

struct Reporter {
    report_url: Option<String>,

where the report_url field is set to Some(value) iff the report flag in the JSON is set to true, and to None otherwise. Is this possible with serde?