angular-filter - groupBy and sum example

<!DOCTYPE html>
<html ng-app="app">

  <head>
    <link rel="stylesheet" href="style.css">
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.22/angular.min.js"></script>
    <script src="//cdnjs.cloudflare.com/ajax/libs/angular-filter/0.5.1/angular-filter.js"></script>    
    <script src="script.js"></script>
    
    <meta name="description" content="[groupBy and sum example]"/>
    <meta charset="utf-8">
    
    <title>angular-filter - groupBy and sum example</title>
  </head>


  <body>
    <div ng-controller="MainController"> 
      <ul ng-repeat="p in players | orderBy: 'team' ">
        Group name: {{ p.team }}
        <li ng-repeat="player in players | filter:p.team">
          player: {{ player.name }} 
        </li>
        <li>score: {{value | map: 'score' | sum}}</li>
      </ul>
      
      ____________________________________
      
      <ul ng-repeat="p in players | unique:'team' ">
        Group name: {{ p.team }}
        <li ng-repeat="player in players | filter:p.team">
          player: {{ player.name }} 
        </li>
        <li>score: {{value | map: 'score' | sum}}</li>
      </ul>
    </div>
  </body>

</html>

// Code goes here

angular.module('app',['angular.filter'])
 .filter('unique', function() {

  // Take in the collection and which field
  //   should be unique
  // We assume an array of objects here
  // NOTE: We are skipping any object which
  //   contains a duplicated value for that
  //   particular key.  Make sure this is what
  //   you want!
  return function (arr, targetField) {

    var values = [],
        i, 
        unique,
        l = arr.length, 
        results = [],
        obj;

    // Iterate over all objects in the array
    // and collect all unique values
    for( i = 0; i < arr.length; i++ ) {

      obj = arr[i];

      // check for uniqueness
      unique = true;
      for( v = 0; v < values.length; v++ ){
        if( obj[targetField] == values[v] ){
          unique = false;
        }
      }

      // If this is indeed unique, add its
      //   value to our values and push
      //   it onto the returned array
      if( unique ){
        values.push( obj[targetField] );
        results.push( obj );
      }

    }
    return results;
  };
})
  .controller('MainController', function($scope) { 
    
    $scope.players = [
      {name: 'Gene', team: 'alpha', score: 10},
      {name: 'George', team: 'beta', score: 14},
      {name: 'Steve', team: 'gamma', score: 8},
      {name: 'Paula', team: 'beta', score: 28},
      {name: 'Scruath', team: 'gamma', score: 7}
    ];
  
 });

/* Styles go here */


angular-filter - groupBy and sum example