Navigating through elements in Angular

Question

Navigating through elements in Angular

I am working with multiple Angular components housed within a display:flex div container. I am fetching datatable from an API, and it contains the same number of rows as there are components. Each row in the datatable corresponds to data for each component. The component has an @Input property that aligns with the data row. I am aiming to create a loop that executes the following pseudocode:

For i=0 to container.children.count-1{
    cast(container.children[i] as mycomponent).Input=datatable.row[i]
}

angular typescript api loops get

Answer 1

Answer №1

To reference your child component, use the # symbol along with the @ViewChildren annotation

HTML:

<child #ChildRef></child>
<child #ChildRef></child>
<child #ChildRef></child>

TS:

@ViewChildren('childRef') childRefs;
getChilds = () => {
  return this.childRefs.toArray();
}

A more streamlined and event-driven approach would be:

Instead of directly referencing children components, you can create a service that is injected into both parent and child components. The components subscribe to the service, allowing for updates when needed. The parent emits an update event to notify the children.

NgModel way:

https://angular.io/guide/two-way-binding

Utilize Two-Way Data Binding [(ngModel)]="ObjectRef"

Answer 2

To reference your child component, use the # symbol along with the @ViewChildren annotation

HTML:

<child #ChildRef></child>
<child #ChildRef></child>
<child #ChildRef></child>

TS:

@ViewChildren('childRef') childRefs;
getChilds = () => {
  return this.childRefs.toArray();
}

A more streamlined and event-driven approach would be:

Instead of directly referencing children components, you can create a service that is injected into both parent and child components. The components subscribe to the service, allowing for updates when needed. The parent emits an update event to notify the children.

NgModel way:

https://angular.io/guide/two-way-binding

Utilize Two-Way Data Binding [(ngModel)]="ObjectRef"

Navigating through elements in Angular

Answer №1

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