如何从角度 4 可观察响应中获取价值？ [复制]

Question

我的问题是我得到的数据是可观察的，所以我检查数据是否 未定义，当它不是未定义时，我将其放入医生对象中，但是 我的一些代码在填充并生成错误之前使用数据，因为 值未定义如何获得变量中响应的值。

    workingDayFilter = ( d: Date ): boolean => {
    const day = d.getDay();
    let workingDays = this.doctor.workingDays;
    let result: boolean = false;

    for ( let i = 0; i < workingDays.length; i++ ) {
        if ( day == workingDays[i] ) {
            result = true;
        }
    }

    return result;

}


ngOnInit() {

    this.getDoctor();


    console.log( this.doctor );
    this.appointmentForm = this.formBuilder.group( {
        patientId: this.patientId,
        date: this.date,
        timeSlot: this.timeSlot
    } );

}
public getDoctor() {
    this.doctorService.getDoctorPublicInfo().subscribe(( data ) => {
        if ( data != undefined ) {
            this.doctor = data.json();
        }
    } );
}

Answer 1

试试这样的

 ngOnInit() {

 this.getDoctor().subscribe((data) => {


    console.log(this.doctor);
    this.appointmentForm = this.formBuilder.group({
        patientId: this.patientId,
        date: this.date,
        timeSlot: this.timeSlot
    });
})

};
public getDoctor() {
 this.doctorService.getDoctorPublicInfo().map((resp) => {
    if (resp != undefined) {
        this.doctor = resp.json();
    }
});

}