Passing a value between Angular Components via a function to overlay trigger dialogs
In my Angular app, I have a component with a function that opens a dialog overlay. I am trying to figure out how to pass some data from the original component to this dialog component (EnrollingProcessComponent). It is not a parent-child relationship, so I cannot use the Input () or [] binding.
Also, since multiple instances can cause problems that I won't go into, we don't use a service to receive and exchange data between components. So I cannot inject the service to get the same instance in the dialog component (EnrollingProcessComponent).
So all that said, I need to somehow pass this data (it's just an email address) from the original component to the dialog component. I suppose I can do this by passing it as a parameter, but so far I can't get it to work (i.e. when I console the value in the original component, I get the value. By consoling this value in the dialog component (EnrollingProcessComponent), I get 'undefined').
I am using the click () event to open a dialog component:
<button *ngIf="canBeEnrolled()" md-menu-item
(click)="onContactClicked()">
<span class="md-menu-text">Initiate Contact</span>
</button>
And the called function looks like this:
public onContactClicked(primaryContactEmail): void {
primaryContactEmail = this.getPrimaryContactEmail();
console.log(this.getPrimaryContactEmail());
console.log('onContactClicked engaged on: ' + new Date());
// Create dialog
let dialogRef: MdDialogRef<EnrollingProcessComponent>
= this.dialog.open(EnrollingProcessComponent, {disableClose: true});
}
How do I pass the result of getPrimaryContactEmail (), which is the email address, from the original component to the component that is launched when the dialog is opened?
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You can pass values to a component instance via a data
parameter property MdDialogConfig
, for example:
primaryContactEmail = this.getPrimaryContactEmail();
let dialogRef: MdDialogRef<EnrollingProcessComponent>
= this.dialog.open(EnrollingProcessComponent, {
disableClose: true,
data: { primaryContactEmail: primaryContactEmail }
});
Then you need to inject MD_DIALOG_DATA into the component EnrollingProcessComponent
, which will allow you to access any passed data, in this case, a property named primaryContactEmail
:
import {MdDialogRef, MD_DIALOG_DATA} from '@angular/material';
@Component({
selector: 'example-dialog',
templateUrl: 'example-dialog.html',
})
export class DialogResultExampleDialog {
constructor(
public dialogRef: MdDialogRef<DialogResultExampleDialog>,
@Inject(MD_DIALOG_DATA) public data: any) {
console.log(this.data);
console.log(this.data.primaryContactEmail);
}
}
Here is a plunker demonstrating the functionality. Check the console when you open the dialog to see the data that can be logged.
If you need to pass a value back to the parent component, you can use md-dialog-close
or close()
to return the value.
I added closing the dialog from the component via close(value: any)
and passing the value to the parent calling component. Ignore the initial boot errors that were present in the base unmodified example.
Hope this helps!
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