Changing route with ui-router skipping resolve - angularjs

Question

I am using ui-router in my angular app.
I define the routing like this:
angular.module('app.product', [])
.config(['$stateProvider', function($stateProvider) {
$stateProvider
.state('product', {
url: '/product/:product_id',
templateUrl: 'partial/product',
controller: 'productCtrl',
resolve: {
product: ['$http', '$stateParams',
function($http, $stateParams) {
return $http.get('/api/product/' + $stateParams.product_id);
}]
}
})
}])
At some point, I manually change the route on the client side using $state.go('product'). Here I already have the product data on the client side so there is no need for an extra $http request.
What is the best way to pass the data in the $state.go call and let ui-router know there is no need to make this request?
Should I build a service to handle this?

Answer 1

Use a service (something like the code below). Just note this is off the top of my head.
.config(['$stateProvider', function($stateProvider) {
$stateProvider
.state('product', {
url: '/product/:product_id',
templateUrl: 'partial/product',
controller: 'productCtrl',
resolve: {
product: ['ProductCache', '$stateParams',
function(ProductCache, $stateParams) {
return ProductCache.getProduct($stateParams.product_id);
}]
}
});
}])
.factory('ProductCache', ['$http', '$q', function($http, $q) {
var cache = [];
return {
getProduct: function(id) {
// return the product if available, otherwise from the api
if(!cache[id]){
return $http.get('/api/product/' + id, function(result){
cache[id] = result.product; // or however your api return is structured
return cache[id];
});
}else{
// use .when() to ensure a promise is returned to the resolve function
return $q.when(cache[id]);
}
}
};
}]);