如何获取存储为subject rxjs的数据

我正在显示已单击事件的详细信息。我已将所有事件存储在一个数组中

当用户单击事件时，将传递其id，该id在数组内部进行检查，并将结果传递到服务中

 showDetail(id){
     let obj = this.events;

        let newArr =  Object.values(obj);

        let result = newArr.filter(function(el)  {
            return el["id"] == id; 
        });

    this.articleService.sendMessage(result);
        let url = `/article/${id}`;
        this.router.navigate([url]);

    }

服务 及

private detailSubject = new Subject<any>();
sendMessage(formData: any) {
        this.detailSubject.next({formData});
    }

    getMessage(): Observable<any> {
        return this.detailSubject.asObservable();
    }

ngOnInit() {
    this.articleService.getMessage().subscribe(
        res => {
            this.loadArticleDetail(res["formData"]);
        },
        error => {
            console.log("Error loading data");
        }
    );
}

this.articleService.sendMessage(result); // <-- Subject.next()
let url = `/article/${id}`;
this.router.navigate([url]); // <-- Subject.subscribe() after Subject.next(), so value already emitted

private detailSubject = new BehaviorSubject<any>(null);
message$ = this.detailSubject.asObservable();

sendMessage(formData: any) {
        this.detailSubject.next({formData});
    }

ngOnInit() {
    this.articleService.message$.subscribe(...