How to integrate angular.js and socket.io?

Question

Angular

I recently started learning angular, the question arose of how to make it friends with socket.io.
I saw several English-language tutorials, but they did not bring any clarity.
Dear professionals, help a newbie.

Answer 1

We wrap it in a service, we weigh $rootScope.$apply to execute callbacks.
An example of a service is here: www.html5rocks.com/en/tutorials/frameworks/angular...
Then we use it as usual:

function controller($scope, socket){
  socket.emit('getFoo', 42, function(data){
    $scope.foo = data
  });
}

Answer 2

I slightly changed the service from the top answer
https://gist.github.com/Vitaliy-Yarovuy/8815316
because it contains an error, it can be detected when sending more than 2 arguments
to the service method, a number of libraries both on the backend and on the frontend not limited to 2 arguments when sending messages

Answer 3

I already figured it out, but after specifying the path to the database, this came out