Sorting only certain arrays in nested ngRepeat - angularjs

Question

I currently have a nested ngRepeat, where the inner loop iterates over a collection of items from its parent. An excerpt:
<div ng-repeat="person in persons">
(Irrelevant code here.)
<table>
<tr>
<th ng-click="setItemOrder('name')">Item name</th>
<th ng-click="setItemOrder('number')">Item number</th>
</tr>
<tr ng-repeat="item in person.items | orderBy:itemOrder">
<td>{{item.name}}
<td>{{item.number}}
</tr>
</table>
</div>
By clicking the table headers, I set the itemOrder-property in my controller to the name of the property I want orderBy to use:
$scope.setItemOrder = function(order){
$scope.itemOrder = order;
}
This all works fine, except that if I click the headers in one person-div, the item-tables in all person-divs get sorted on that property.
Is there a way to make ngRepeat only apply orderBy to entries that match a certain criteria - for instance a certain index? Or should I use a different approach?

Answer 1

Try setting the property to respective person instance as follows:
angular.module('test', []).controller('testController', function($scope) {
$scope.persons = [{
items: [{
name: 'test',
number: 2
}, {
name: 'test1',
number: 1
}]
}, {
items: [{
name: 'test3',
number: 5
}, {
name: 'test4',
number: 4
}]
}];
$scope.setItemOrder = function(person, order) {
person.itemOrder = order;
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<form ng-app="test" ng-controller="testController">
<div ng-repeat="person in persons">
<table>
<tr>
<th ng-click="setItemOrder(person,'name')">Item name</th>
<th ng-click="setItemOrder(person,'number')">Item number</th>
</tr>
<tr ng-repeat="item in person.items | orderBy:person.itemOrder">
<td>{{item.name}}
<td>{{item.number}}
</tr>
</table>
</div>

Answer 2

You could add a ordering variable for each person and extend setItemOrder with the person object. Then you can call:
setItemOrder(person, 'name');
and then use it in the ngRepeat:
orderBy:person.itemOrder

Answer 3

angular.module('test', []).controller('testController', function($scope) {
$scope.ordersort=true;
$scope.orderfield='number';
$scope.persons = {
"items": [{
"name": 'test',
"number": 2
}, {
"name": 'test1',
"number": 1
}],
"item1": [{
"name": 'test3',
"number": 5
}, {
"name": 'test4',
"number": 4
}]
};
$scope.setItemOrder = function(person, order) {
$scope.orderfield=order;
person.itemOrder = order;
$scope.ordersort= !$scope.ordersort;
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<form ng-app="test" ng-controller="testController">
<div ng-repeat="person in persons">
<table>
<tr>
<th ng-click="setItemOrder(person,'name')">Item name</th>
<th ng-click="setItemOrder(person,'number')">Item number</th>
</tr>
<tr ng-repeat="item in person | orderBy:orderfield:ordersort">
<td>{{item.name}}
<td>{{item.number}}
</tr>
</table>
</div>
I have modified your example. In this example table sorting is working perfectly. But It is not sorted the particular table when I click on that table header. Anyway to sort columns by specific table?
angular.module('test', []).controller('testController', function($scope) {
$scope.persons = [{
items: [{
name: 'test',
number: 2
}, {
name: 'test1',
number: 1
}]
}, {
items: [{
name: 'test3',
number: 5
}, {
name: 'test4',
number: 4
}]
}];
$scope.setItemOrder = function(person, order) {
person.itemOrder = order;
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<form ng-app="test" ng-controller="testController">
<div ng-repeat="person in persons">
<table>
<tr>
<th ng-click="setItemOrder(person,'name')">Item name</th>
<th ng-click="setItemOrder(person,'number')">Item number</th>
</tr>
<tr ng-repeat="item in person.items | orderBy:person.itemOrder">
<td>{{item.name}}
<td>{{item.number}}
</tr>
</table>
</div>