arrays,angularjs,angularjs-scope , Use $scope variable as array index


Use $scope variable as array index

Question:

Tag: arrays,angularjs,angularjs-scope

I have an array or 'players', and each player has a name, a score and other properties.

I have the following in my partial:

<select ng-model="personToAsk">
    <option value=''>Select who you want to ask</option>
    <option ng-repeat="p in players" value="{{$index}}">{{p.name}} ({{p.score}} points)</option>
</select>
<p>Selected player: {{selectedPerson.name}}

And in my controller:

$scope.selectedPerson = $scope.players[$scope.personToAsk];

But {{selectedPerson.name}} is not outputting anything.

If I hardcode the index in my players array ($scope.selectedPerson = $scope.players[0];), it does output the person, but how do I get to be dynamic, so when a player is selected in the dropdown, it shows the name only further down.

If I put {{personToAsk}} in my template, it does output a number.


Answer:

It all seems kind of messed up. I dont know what variable 'index' is for example etc.

You should use ngOptions to generate the options of the select.

Suppose you have this in your controller:

$scope.personToAsk = {};    
$scope.players = [
    { id: 1, name: 'John', score: 10},
    { id: 2, name: 'George', score: 15},
    { id: 3, name: 'James', score: 4}
];

Then in your view, just write this:

<select ng-model="personToAsk" 
    ng-options="p as (p.name + ' ' + p.score) for p in players">
</select>
<p>Selected player: {{personToAsk.name}}</p>  

jsfiddle example: http://jsfiddle.net/JoeSham/HB7LU/9008/


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