How can we bind data to two separate $scopes in AngularJS simultaneously?

I am attempting to transfer data from $scope 1 to $scope 2. Here, I am trying to send either "project_data.title" or "$$scope.project_data.project_title" in $scope 1 to $scope.test in $scope 2.

[$scope A]

$scope.updateData = function(project_id){
    $http.post("../crud/projects_update.php",{
        project_id : $scope.project_data.project_id,    
        project_title : $scope.project_data.project_title // this needs to be transmitted to $scope B.
    })

[$scope B]

$http.get('../crud/customers_read.php',{

}).then(function(response){
    $scope.customer = [];
    $scope.customers = response.data;
    $scope.test = { name: $scope.project_data.project_title }; // This should originate from $scope A.
});

I initially assumed they were interchangeable, but it turns out that's not the case. How do you typically address this issue of binding data between different $scope variables?

Thank you in advance!

Answer №1

Angular scopes have the ability to look up to parent scopes by default unless isolated. It appears that in your case, the sibling scopes do not inherit each other's scopes automatically.

For instance:

Scope X -> Scope Y: Scope Y can access variables from Scope X

Scope Z <- Scope X -> Scope Y
: Both Scope Y and Scope Z can access variables from Scope X, but Scope Y cannot access variables from Scope Z, and vice versa

While you can use $rootScope, it may lead to complex state management as your application grows.

I recommend storing the data in a service instead.

Have Scope X publish the data to CommonDataSvc, allowing Scope Y to reference the data there.

This approach will help maintain better organization of your state.

Alternatively, you could consider implementing Redux.

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