How do I utilize ng-options to fill a select element with the content of the "categories" arrays inside the objects?
{
title: "Star Wars",
categories: ["Technology", "Adventure", "Coding"]
}, {
title: "Street Wars",
categories: ["Gaming", "Travel", "Exploration"]
},
The goal is to populate a select element with all distinct categories and exclude any duplicates using the "unique" filter.
According to the suggestion, it may be more convenient to generate the distinct element in the controller and employ ngOptions on the fresh array:
$scope.uniqueCategories = [];
for (let i = 0; i < dataList.length; i++) {
for (let j = 0; j < dataList[i].tags.length; j++) {
if ($scope.uniqueCategories.indexOf(dataList[i].tags[j]) === -1) {
$scope.uniqueCategories.push(dataList[i].tags[j])
}
}
}
Here are the choices:
<select ng-model="selectedCategory" ng-options="tag as tag for tag in uniqueCategories"> </select>
If you're utilizing an ngRepeat, this method will work for you
<select ng-model="cat" ng-options="c for c in movie.categories"></select>
Here is a functional demonstration.
UPDATE: For the select tag to function properly, ngModel is mandatory.
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