add() to the nested array

Having trouble adding new nested objects. Keep receiving the error message

cannot read property push of undefined
on line 3.

What could be causing this issue? Is there a better way to accomplish this?

$scope.item.deliverables[0].steps[0].versions = [];
$scope.item.deliverables[0].steps[0].versions.push({assets:[{url:'aaa'}]})
$scope.item.deliverables[0].steps[0].versions.assets.push({url:'bbb'})

Answer №1

To correctly access the versions as an array, use the following code snippet:

$scope.item.deliverables[0].steps[0].versions = [];
$scope.item.deliverables[0].steps[0].versions.push({assets:[{url:'aaa'}]})
// The newly pushed item can be found in .versions[0]
$scope.item.deliverables[0].steps[0].versions[0].assets.push({url:'bbb'})

However, if you did this:

$scope.item.deliverables[0].steps[0].versions = [];

In that case, versions is interpreted as an array but the property assets within it is considered as undefined. This results in the following error:

cannot read property push of undefined

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