Unable to execute function on Child Element

I am encountering an issue when trying to call a function on a child component. Whenever I try to invoke it by clicking, I always receive an error indicating that the function is undefined.

Here is the code in my Parent component:

 import {MatTableComponent} from './mat-table/mat-table.component'
 @ViewChild('matGrid') matGrid: MatTableComponent;

  onReload(){
      console.log('User clicked Reload');
      this.matGrid.onReload()
    }

In my child component, I have a simple method:

  onReload() {
    console.log('User Requested Hit the component')
  }

Upon clicking, the following error occurs:

main.js:1 ERROR TypeError: Cannot read properties of undefined (reading 'onReload') at t.onReload (main.js:1) at main.js:1 at aA (main.js:1) at d (main.js:1) at HTMLButtonElement. (main.js:1) at Q.invokeTask (polyfills.js:1) at Object.onInvokeTask (main.js:1) at Q.invokeTask (polyfills.js:1) at Q.runTask (polyfills.js:1) at Q.invokeTask [as invoke] (polyfills.js:1)

What am I missing in order to resolve this issue and make it work correctly?

Answer №1

Upon further investigation, I discovered that my problem stemmed from laziness and a simple oversight in copying code for a @ViewChild reference to an Angular Material table. The incorrect use of quotation marks was causing the issue. To correctly reference the child component, only the exported class name of the component should be used:

@ViewChild(MatTableComponent) matGrid: MatTableComponent;

Making this adjustment resolved the issue. It's worth noting that the error message provided was not very specific, but the IDE's autocomplete function displayed the correct syntax.

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