Question

我使用Angular 7和反应式表单创建“编辑配置文件”页面。我从数据库中填写了所有输入值。例如，如果要更改名字和姓氏，请单击“更新”按钮，一切看起来都很好，所有字段都已更新。问题是，如果我只想再次更新名字，则在单击“更新”按钮后，姓氏具有初始值。因此，问题在于我的变量＃f =“ ngForm”保留了旧值（第一个值），并且在更新过程之后，#f变量又有了第一个值。

<form [formGroup]="patientEditForm" #f="ngForm" (ngSubmit)="editPatientProfile(f)">

editPatientProfile(f: NgForm ) {
  this.submitted = true;
  this.isRequesting = true;
  this.errors = '';
  if (f.valid) { 
      this.userService.editPatientProfile(this.patientId,
          this.patient.nin,
          f.value.firstName,
          f.value.lastName,
          this.email,
          f.value.password,
          f.value.city,
          f.value.country,
          f.value.birthdate,
          f.value.phoneNumber)
          .finally(() => this.isRequesting = false)
          .subscribe(
              result => {
                  if (result) {
                      this.router.navigate(['/patient/account']);
                      localStorage.setItem('displayMessage1', "true");
                      window.location.reload();
                  }
              },
              errors => this.errors = errors);
  }
  }

 <input type="email" value="{{patient.email}}" disabled class="form-control mb-2 mr-sm-2 mb-sm-0">

this.patientEditForm = this.formBuilder.group({
      lastName: ['Test', [Validators.required, Validators.minLength(3), Validators.maxLength(30), Validators.pattern("[a-zA-Z]+")]],
      firstName: ['Test', [Validators.required, Validators.minLength(3), Validators.maxLength(30), Validators.pattern("[a-zA-Z]+")]],
      phoneNumber: ['0745119974', [Validators.required, Validators.pattern("[0-9]+")]],
      birthdate: ['1996-02-10', [Validators.required,this.validateDOB.bind(this)]],
      city: ['Iasi', [Validators.required, Validators.minLength(3), Validators.maxLength(30), Validators.pattern("[a-zA-Z]+")]],
      password: ['', [Validators.required, Validators.minLength(6), Validators.maxLength(35), this.validatePasswordConfirmation.bind(this)]],
      country: ['Romania', [Validators.required, Validators.minLength(3), Validators.maxLength(30), Validators.pattern("[a-zA-Z]+")]]    
    });

Answer 1

最后，我通过在订阅事件中设置新属性来解决了这个问题：

 private getPatient() {
    this.userService.getPatient(this.patientId)
    .subscribe((patient: PatientProfile) => {
        this.patient = patient;
        this.patientEditForm.controls['lastName'].setValue(patient.lastName);
        this.patientEditForm.controls['firstName'].setValue(patient.firstName);
        this.patientEditForm.controls['phoneNumber'].setValue(patient.phoneNumber);
        this.patientEditForm.controls['birthdate'].setValue(patient.birthdate);
        this.patientEditForm.controls['city'].setValue(patient.city);
        this.patientEditForm.controls['country'].setValue(patient.country);
    },
    errors => this.errors = errors
    );

编辑配置文件后更新＃f =“ ngForm”变量

1 个答案: