Refreshing the Angular directive following a change in the scope variable

Just getting started with Angular and I've encountered a small issue. Within my template for SirroccoListing, I have the following code. Sirrocco is a directive:

<h3>All Sirroccos</h3>

<div sirrocco ng-repeat="sirrocco in sirroccos" 
     idx="{{ $index }}"></div>
<div sirrocco ng-model="sirroccoListing.addSirrocco" 
     idx="{{ sirroccos.length }}" 
     add-button="true" 
     class="add-sirrocco"></div>

Essentially, what I am trying to achieve is to display all the [sirroccos] and then add another slightly different sirrocco (as an add-button).

The [sirroccos] (an array in the scope) are loaded via a REST call and can be updated, which is functioning correctly. The issue arises when I want the add-button sirrocco to be rendered after the [sirroccos], with the idx attribute being important. How can I achieve this? It should also be re-rendered when the number of [sirroccos] changes.

I hope my explanation is clear and someone can offer assistance.

Wishing you a wonderful day ahead!

Answer №1

index="{{ sirroccosCount }}"

Currently, you are utilizing one-way binding '@' for the index, however, providing it by value requires two-way binding using '=' within the sirrocco directive. Make sure to remove {{ }}, resulting in:

> index="sirroccosCount"

By doing this, you will enable two-way binding and ensure that the .length is updated each time.

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