count value in a array into ng-repeat - angularjs

Question

I have this data : http://www.monde-du-rat.fr/API/moulinette/radio/posts.json , from cakephp app, it's song by song, with attached votes
I use it as a service into a angularjs app, and i displayed it like this in html :
<div ng-repeat="song in songs | orderBy:'Radio.idSong' | notesong:'Radiovote'" class="list-group-item" id="{{song.Radio.idSong}}" ng-class="{ 'active' : songPlayed_name == song.Radio.name }" ng-if="songs">
<span>{{song.Radio.idSong}} - {{song.Radio.title}}</span><br />
<span>{{note}}%</span>
</div>
So, i want to count each attached vote, and define with values 'good' or 'bad', the % of likes
I try to made this filter :
/* notesong */
app.filter('notesong', function() {
return function(input) {
// counter init
var countGood = 0;
// if there is no votes, so note is zero
if (!angular.isArray(input)) {
var note = 0;
} else {
// loop for each vote (from Radiovote array, each value)
angular.forEach(input, function () {
if (input.value == 'good') {
countGood = countGood + 1;
}
});
var note = (countGood * input.length) / 100;
}
// final return
return note;
};
});
It's not working apparently (no errors, and no data displayed), so, what is the correct way ?

Answer 1

You are applying the filter in the wrong place. Instead of using it on the ng-repeat you should use it on the property you want to bind, like this:
<div ng-repeat="song in songs | orderBy:'Radio.idSong'" class="list-group-item" id="{{song.Radio.idSong}}" ng-class="{ 'active' : songPlayed_name == song.Radio.name }" ng-if="songs">
<span>{{song.Radio.idSong}} - {{song.Radio.title}}</span><br />
<span>{{song.Radiovote | notesong}}%</span>
</div>
There's also a problem with the way you are looping the votes in your filter. Update the following lines:
// loop for each vote (from Radiovote array, each value)
angular.forEach(input, function (item) {
if (item.value == 'good') {
countGood = countGood + 1;
}
});