如何在Angular的模態窗口中使用函數

Question

我有一個簡單的文件列表和“刪除”按鈕。 我添加了模態窗口進行確認。但是，我不知道如何在模態窗口中添加主要組件中的Delete函數。對於模態窗口Im使用庫@ angular / material。 我的目標是通過在模式窗口中單擊class = accept（）按鈕刪除文件。

export class FileService {

constructor(private http: HttpClient, @Inject('BASE_URL') 
baseUrl: string, public dialog: MatDialog ) {}

public openDeleteModal(name: any, id: any) {
this.dialog.open(DeleteDialog, { data: { name , id} }); 
}

public fileDelete(id) {
return this.http.delete(this.Url + '/delete' + id).subscribe(
  data => {
    console.log("DELETE Request is successful ", data);
  },
  error => {
    console.log("Error", error);
  })
 }
 }

@Component({
selector: 'list-files-deletedialog',
templateUrl: './list-files-deletedialog.component.html',
  })
export class DeleteDialog {
constructor(public dialogRef: MatDialogRef<DeleteDialog>,
@Inject(MAT_DIALOG_DATA) public data: any) { }

 public accept(): void {

  // here i want to implement function fileDelete
 }

 close(): void {
  this.dialogRef.close();
 }
}

Answer 1

您可以使用回調函數

export class FileService {

constructor(private http: HttpClient, @Inject('BASE_URL') 
baseUrl: string, public dialog: MatDialog ) {}

public openDeleteModal(name: any, id: any, cb?: any) {
   let deleteModelRef: MatDialogRef<DeleteDialog>;
   this.dialog.open(DeleteDialog, { data: { name , id} }); 

   deleteModelRef.afterClosed().subscribe(result => {
        if (cb) {
            cb();
        }
   });
}

public fileDelete(id) {
  return this.http.delete(this.Url + '/delete' + id).subscribe(
    data => {
      console.log("DELETE Request is successful ", data);
    },
    error => {
      console.log("Error", error);
    })
   }
}

和DeleteDialogue.component

@Component({
selector: 'list-files-deletedialog',
templateUrl: './list-files-deletedialog.component.html',
  })
export class DeleteDialog {
constructor(public dialogRef: MatDialogRef<DeleteDialog>,
@Inject(MAT_DIALOG_DATA) public data: any, private fileService: FileService) { }

 public accept(): void {

  this.fileservice.openDeleteModal('name',id, cb => {
     // here you can call delete service like
     this.fileservice.fileDelete(id);
  });
 }

 close(): void {
  this.dialogRef.close();
 }
}

Answer 2

將此添加到您的模式模板：

...

<mat-dialog-actions align="end">
  <button mat-button mat-dialog-close>Cancel</button>
  <button mat-button [mat-dialog-close]="data" cdkFocusInitial>DELETE</button>

...

訂閱數據

 openDialog(data) {
        const dialogRef = this.dialog.open(DialogContentExampleDialog);

        dialogRef.afterClosed().subscribe(data=> {
          return this.http.delete(this.Url + '/delete' + id).subscribe(
          data => {
          console.log("DELETE Request is successful ", data);
  },
  error => {
    console.log("Error", error);
  })

}）; }