Angular Service Calling Another Service

I'm making a simple Angular app to manage incomes. The incomes come from projects that I store in json (for testing purpose). So, basically, I use a service in Angular to get this

Solution 1:

This is how async call works: If Incomes service data populates by async way, therefore it must return promise as well.

I would create some method buildAndGetIncomes that will call Projects.async() and when data is fetched -> return new promise to controller:

facturateApp.service('Incomes', function(Projects, $q){

    varself = this;

    var deferred = $q.defer();    
    var incomes = []; 

    self.buildAndGetIncomes = function(){

        Projects.async().then(function(d) {
      var projects = d;

      angular.forEach(projects, function(project){

        if(typeof(project.account.accountAmount) == 'number' && project.account.accountAmount > 0){
            var newIncome = {};
            newIncome.projectName = project.projectName;
            newIncome.clientName = project.clientName;
            newIncome.typeIncome = "Accompte";
            newIncome.amount = project.account.amountAccount;
            newIncome.date = project.account.accountDate;
            newIncome.notes = project.account.accountType;
            incomes.push(newIncome);
        }
      });

      angular.forEach(projects, function(project){


        if (typeof(project.total.totalAmount) == 'number' && project.total.totalAmount > 0){
            var newIncome = {};
            newIncome.projectName = project.projectName;
            newIncome.clientName = project.clientName;
            newIncome.typeIncome = "Accompte";
            newIncome.amount = project.total.totalAmount;
            newIncome.date = project.total.totalDate;
            newIncome.notes = project.total.totalType;
            incomes.push(newIncome);
        }
      });

     deferred.resolve(incomes);      
    });

    return deferred.promise;    
    };    
});

and from controller we call :

Incomes.buildAndGetIncomes().then(function(incomes) {
   // ...
}, function(error) {
  // ..
});