Using Redirections Into Promises Chain

I'm using promises to call a serie of webservices, but I'd like, in some cases, use redirection in the middle of my logic. The problem is that the promises chain continue to execut

Solution 1:

func = function () {
    return PromiseCall1().then(function (data) {
        if (condition) {
            $location.path(some_url); // This is a redirection with AngularJS
        } else {
            return PromiseCall2().then(function (data) {
                return PromiseCall3();
            }).then(function (data) {
                // Some other stuff here
            });
        }
    });
};

Solution 2:

Petka's solution is ok. If you want. It is possible if you wrap your then handlers with Maybe.

Something like:

var maybe = function(fn){
     return function(value){
          if(value === maybe.Nothing) return maybe.Nothing;
          return fn.apply(this,arguments);
     };
});
maybe.Nothing = {}; // unique reference

Which would let you do

Promise.try(function(){
    return15;
}).then(maybe(function(val){
    console.log("got",val);    
    return maybe.Nothing;
})).then(maybe(function(val){
    console.log("This never gets called");  
}));

This gives you an explicit value hook to signal not continuing any promise in the chain that is wrapped with a maybe.