Within my application, I have two components - a parent component and a child component. The child component has an OnPush Strategy implemented to detect changes efficiently. Through binding using (), I pass an array of objects from the parent to the child component.
However, after everything is rendered and I update a field of one of the objects in the array, the template that lists the fields values does not automatically update. Can anyone provide insight into why this might be happening?
OnPush requires immutability to work effectively.
If you modify your array using the push method, your component will not be updated because the reference to the array remains the same.
In the parent component, when adding a value, it is recommended to use:
this.myArray = [...this.myArray, {someObjectOrWhatever: ''}] // this creates a new reference
For removal, consider using filter which also returns a new array.
As long as you maintain the same reference and have OnPush enabled in your child component, updates will not be visible.
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