Guide on invoking a function from a different component inside a material dialog in Angular version 14

Question

Guide on invoking a function from a different component inside a material dialog in Angular version 14

Is there a way to invoke a method in one component from a dialog component?

Let's take a look at the first component:

componentA

openDialog(): void {
  const dialogRef = this.dialog.open(componentB.dialog, {
  width: '700px',
});

methodToBeCalledFromCompB() { //how can I call this?
  console.log('test');
}

The second component is

componentB.dialog

constructor(...) {}

public cancel() {
  
  //how do I call the method methodToBeCalledFromCompB() that belongs to **componentA** here before closing the dialog

  this.dialogRef.close();
}

How do I trigger methodToBeCalledFromCompB() when cancel() is called in componentB.dialog?

angular typescript dialog

Answer 1

Answer №1

To achieve this functionality, one approach is to utilize a callback function, although it may not be the most elegant solution. When the dialog is opened in componentB, you can pass a reference to `methodToBeCalledFromCompB()` and then execute that function within the dialog.

Another method is to create or use a global service class specific to componentA, which can trigger the desired method in componentA. By injecting this service into componentB's dialog, you can call the service's method to emit an event that prompts componentA to execute the required method.

Within the constructors of both componentB.dialog and componentA, import the service:

constructor(aService: ComponentAService)

In the cancel() method of componentB.dialog: aService.emitMethod()

In the componentA service class:

eventEmitter: EventEmitter<any> = new EventEmitter<any>();

emitMethod() {
   eventEmitter.emit();
}

In componentA component:

this.aService.eventEmitter.subscribe((data: any) => {
      this.methodToBeCalledFromCompB();
});

Answer 2

To achieve this functionality, one approach is to utilize a callback function, although it may not be the most elegant solution. When the dialog is opened in componentB, you can pass a reference to `methodToBeCalledFromCompB()` and then execute that function within the dialog.

Another method is to create or use a global service class specific to componentA, which can trigger the desired method in componentA. By injecting this service into componentB's dialog, you can call the service's method to emit an event that prompts componentA to execute the required method.

Within the constructors of both componentB.dialog and componentA, import the service:

constructor(aService: ComponentAService)

In the cancel() method of componentB.dialog: aService.emitMethod()

In the componentA service class:

eventEmitter: EventEmitter<any> = new EventEmitter<any>();

emitMethod() {
   eventEmitter.emit();
}

In componentA component:

this.aService.eventEmitter.subscribe((data: any) => {
      this.methodToBeCalledFromCompB();
});

Guide on invoking a function from a different component inside a material dialog in Angular version 14

Answer №1

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