From what source does the angular framework retrieve its 'data' information?

--- Consider this code snippet from a specific file ---

angular.module('storyCtrl', ['storyService'])

.controller('StoryController', function(Story, socketio) {

    var vm = this;

    Story.getStory()
        .success(function(data) {
            vm.stories = data;
        });

    vm.createStory = function() {
        vm.message = '';
        var newMessage = vm.storyData.content;
        var newStory = { str: newMessage , timeNow: new Date(), mess: "Hello" };
        Story.createStory(newStory)
            .success(function(data) {
                vm.storyData = '';

                vm.message = data.message;

            });
    };

    socketio.on('story', function(data) {
        vm.stories.push(data);
    })
})

Can you identify the origin or initialization of the variable "data" in this code snippet? It doesn't appear to be a global variable or from ['storyService']. Any insights would be appreciated.

Thank you

Answer №1

When a function like getStory, createStory, or another function is called, the data that it returns is stored in the variable called data. This data can come in various formats, such as a JSON array in the case of the getStory function. In the success function, the data is then assigned to the variable vm.stories for further use.

Is this explanation clear?

Answer №2

In the storyCtrl module, there is a reference to another module called storyService. It may seem a bit confusing, but the storyService module actually contains a service (or factory) named Story. This Story service includes a method called getStory. Inside the getStory method, it most likely makes a request using $http. This can be inferred from the fact that getStory does not utilize standard promises, but instead uses the success and error methods provided by $http.

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