Coder1 Coder1 - 2 months ago 24
AngularJS Question

Can you change a path without reloading the controller in AngularJS?

It's been asked before, and from the answers it doesn't look good. I'd like to ask with this sample code in consideration...

My app loads the current item in the service that provides it. There are several controllers that manipulate the item data without the item being reloaded.

My controllers will reload the item if it's not set yet, otherwise, it will use the currently loaded item from the service, between controllers.

Problem: I would like to use different paths for each controller without reloading Item.html.

1) Is that possible?

2) If that is not possible, is there a better approach to having a path per controller vs what I came up with here?

app.js

var app = angular.module('myModule', []).
config(['$routeProvider', function($routeProvider) {
$routeProvider.
when('/items', {templateUrl: 'partials/items.html', controller: ItemsCtrl}).
when('/items/:itemId/foo', {templateUrl: 'partials/item.html', controller: ItemFooCtrl}).
when('/items/:itemId/bar', {templateUrl: 'partials/item.html', controller: ItemBarCtrl}).
otherwise({redirectTo: '/items'});
}]);


Item.html

<!-- Menu -->
<a id="fooTab" my-active-directive="view.name" href="#/item/{{item.id}}/foo">Foo</a>
<a id="barTab" my-active-directive="view.name" href="#/item/{{item.id}}/bar">Bar</a>
<!-- Content -->
<div class="content" ng-include="" src="view.template"></div>


controller.js

// Helper function to load $scope.item if refresh or directly linked
function itemCtrlInit($scope, $routeParams, MyService) {
$scope.item = MyService.currentItem;
if (!$scope.item) {
MyService.currentItem = MyService.get({itemId: $routeParams.itemId});
$scope.item = MyService.currentItem;
}
}
function itemFooCtrl($scope, $routeParams, MyService) {
$scope.view = {name: 'foo', template: 'partials/itemFoo.html'};
itemCtrlInit($scope, $routeParams, MyService);
}
function itemBarCtrl($scope, $routeParams, MyService) {
$scope.view = {name: 'bar', template: 'partials/itemBar.html'};
itemCtrlInit($scope, $routeParams, MyService);
}


Resolution.

Status: Using search query as recommended in the accepted answer allowed me to provide different urls without reloading the main controller.

app.js

var app = angular.module('myModule', []).
config(['$routeProvider', function($routeProvider) {
$routeProvider.
when('/items', {templateUrl: 'partials/items.html', controller: ItemsCtrl}).
when('/item/:itemId/', {templateUrl: 'partials/item.html', controller: ItemCtrl, reloadOnSearch: false}).
otherwise({redirectTo: '/items'});
}]);


Item.html

<!-- Menu -->
<dd id="fooTab" item-tab="view.name" ng-click="view = views.foo;"><a href="#/item/{{item.id}}/?view=foo">Foo</a></dd>
<dd id="barTab" item-tab="view.name" ng-click="view = views.bar;"><a href="#/item/{{item.id}}/?view=foo">Bar</a></dd>

<!-- Content -->
<div class="content" ng-include="" src="view.template"></div>


controller.js

function ItemCtrl($scope, $routeParams, Appts) {
$scope.views = {
foo: {name: 'foo', template: 'partials/itemFoo.html'},
bar: {name: 'bar', template: 'partials/itemBar.html'},
}
$scope.view = $scope.views[$routeParams.view];
}


directives.js

app.directive('itemTab', function(){
return function(scope, elem, attrs) {
scope.$watch(attrs.itemTab, function(val) {
if (val+'Tab' == attrs.id) {
elem.addClass('active');
} else {
elem.removeClass('active');
}
});
}
});


The content inside my partials are wrapped with
ng-controller=...

Answer

If you don't have to use URLs like #/item/{{item.id}}/foo and #/item/{{item.id}}/bar but #/item/{{item.id}}/?foo and #/item/{{item.id}}/?bar instead, you can set up your route for /item/{{item.id}}/ to have reloadOnSearch set to false (docs.angularjs.org/api/ngRoute.$routeProvider). That tells AngularJS to not reload the view if the search part of the url changes.

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