I am looking for a way to share form data among multiple controllers before submitting it.
Currently, I am using module.value() to store the data as a global variable.
var serviceApp = angular.module('sampleservice', [ ]);
serviceApp.value('GData',{});
Is this the most efficient solution for my needs?
Avoid using modules in this scenario. The recommended approach is to utilize a service for sharing persistent data among Controllers.
var ControllerOne = function (someService) {
}
var ControllerTwo = function (someService) {
}
app.service('someService', function(){
this.sayHello= function(text){
return "Service says \"Hello " + text + "\"";
};
});
Alternatively, consider utilizing event on the scope.
var ControllerOne = function($scope) {
$scope.$on('someEvent', function(event, data) {
});
}
var ControllerTwo = function($scope) {
$scope.$on('someEvent', function(event, data) {
});
}
$rootScope.$broadcast('someEvent', [1,2,3]);
This resource suggests a method for sharing data between controllers in AngularJS by storing the data in a service and notifying each controller of any changes. The controllers would then have their own scoped copy of the data to access in their views. To keep the data synchronized, $broadcast is called on $rootScope in the service and $on in each controller.
Alternatively, another approach involves avoiding the use of $rootScope for broadcasting and $on for syncing data. Instead, keeping the data in an "app" controller where views directly reference it through inheritance. This eliminates the need for $broadcast and $on as there's no synchronization required, making the service truly stateless. Data access in the service is achieved by passing the object in the app controller's scope to its methods.
A demonstration of this technique can be found in the modified plunk from the original article. The resulting code is said to be more concise and easier to follow. However, efficiency and clarity may vary based on individual preferences.
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