Avoiding repetitive logic in both parent and child components in Angular 8

In my parent controller, I have common requests and I also read router params for those requests. However, for the child components, I have different requests but still need to extract the same parameters from the router - resulting in duplicate code.

For both parents and children:

this.param1 = this.route.snapshot.paramMap.get('param1');
this.param2 = this.route.snapshot.paramMap.get('param2');

The initialization of param1 and param2 remains the same.

Children are used via

<router-outlet></router-outlet>

The connection between parent and children is done via Services.

Is there a better way to avoid this duplication? Perhaps moving the reading of params to a Service and subscribing to it? But then I still have to initialize the variables. Or maybe creating a common class and implementing it in both the parent and child components?

Answer №1

There are a couple of ways to approach this situation. One option is to follow your suggestion and create a service to handle the parameter logic. You can then import the service and access the parameter value as needed. Alternatively, you could utilize an event emitter to transmit values from a parent component to its children. For further details on how to use event emitters, you can refer to the documentation.

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