Utilizing Angular to iterate through a list of select options and dynamically assign a selected

Currently, I have a drop-down menu populated with States from JSON data:

<select name="ParentState" ng-model="selectedState" ng-options="s.StateID as s.StateCode for s in cStates | orderBy:'StateCode'">
    <option value="">Select State...</option>
</select>

I am trying to programmatically set the selected state based on the logged-in user's information using Angular. However, my current approach does not seem to be working as expected.

angular.forEach($scope.cState, function (s) {
    if (s.StateCode == xParentState) {
        $scope.selectedState = s.StateCode;
    }
});

xParent represents the initials of the state, for example, 'MI' for Michigan.

javascriptangularjs

Answer №1

Make sure to assign the ngModel to the StateID instead of the StateCode based on the ngOptions configuration (

value as text for object in array
). This will ensure proper functionality.

if (s.StateCode == xParentState) {
    $scope.selectedState = s.StateID;
}

Answer №2

Make sure to refer to the documentation for `ngOptions.

In this case, you are utilizing the expression 

select as label for value in array
. Therefore, to set the ngModel, you will need to specify the StateID.

If you have an object like:

xParentState: {
    StateID: 1,
    StateCode: 'MI',
    StateName: 'Michigan'
}

Instead of looping through the array of states, you can directly assign the value using 

$scope.selectedState = xParentState.StateID
, or utilize ngInit to set it within the template (for example, when the user refreshes the page):

<select ng-model="selectedState" ng-options="s.StateID as s.StateCode for s in cStates | orderBy:'StateCode'" ng-init="selectedState = xParentState.StateID">
     <option value="">Select State...</option>
</select>

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