Passing data between components that are not actively being called can be achieved in Angular 8 by using services

I am new to Angular and I have discovered a method for passing data between components in Angular using @Input:

In the parent component:

...
<app-child [childMessage]="parentMessage"></app-child>
...

In the child component:

...
@Input() childMessage: string;
...

However, in my situation,

I am unable to call the selector of the component that I want to pass.

How can I still pass the data?

Note: When I say "call," I mean doing this -->

<app-child></app-child>

Answer №1

One way to share data between two components is by utilizing a shared service. You can set a variable in the shared service from the parent component and then access it in the child component. Another approach is to add getter and setter functions within the service itself.

Answer №2

It seems like you are struggling to pass a component value in the way you have structured it, which may not exist. Try using one of the following methods to pass in the string.

<app-child [childMessage]="'parentMessage'"></app-child>

Alternatively, declare the variable you are attempting to pass in your parent component like this.

public parentMessage = "parentMessage";

The syntax appears to be correct, so this could be the issue.

If you encounter issues rendering the component with its selector

<app-child></app-child>
, refer to this StackBlitz example from the Angular documentation for proper usage.

This problem is likely related to ensuring that your module declarations are set up correctly.

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