Loading JSON data from a file in an AngularJS service

Looking to retrieve JSON data from a file named driverStandings.json, which can be found in the structure from the provided image. I am utilizing a service API to fetch this information by using the code displayed below (refer to image).

https://i.sstatic.net/PGA3G.png

After compiling, instead of obtaining my list of drivers, I encounter the following error:

TypeError: url.replace is not a function
    at angular.js:8557
    at sendReq (angular.js:8426)
    at $get.serverRequest (angular.js:8146)
    at deferred.promise.then.wrappedCallback (angular.js:11682)
    at deferred.promise.then.wrappedCallback (angular.js:11682)
    at angular.js:11768
    at Scope.$get.Scope.$eval (angular.js:12811)
    at Scope.$get.Scope.$digest (angular.js:12623)
    at Scope.$get.Scope.$apply (angular.js:12915)
    at done (angular.js:8450)

Could someone shed some light on what exactly a TypeError means and why I am encountering this issue?

javascriptjsonangularjsservice

Answer №1

Avoid using jsonp to retrieve static json data and avoid nesting an additional $http call within another.

Simplify by utilizing only the inner $http call and eliminating the outer one.

CustomAPI.fetchData = function(id){
    return $http.get( ... path to json file ...)
}

Answer №2

angular
    .module('FormulaOne.services', {})
    .factory('F1APIService', function ($http)
        {
            function http_get (url, successFunction, errorFunction)
            {
                var promise = $http.get(url);

                promise.success(successFunction);

                if (errorFunction) // optional error catch
                    promise.error(errorFunction);

                return promise;
            }

            return {
                getDrivers: function (successFunction, errorFunction)
                {
                    return http_get('/app/data/driversStandings.json', successFunction, errorFunction);
                },
                getDriverDetails: function (id, successFunction, errorFunction)
                {
                    return http_get('/app/data/' + id + '/driversStandings.json', successFunction, errorFunction);
                },
                getDriverRaces: function (id, successFunction, errorFunction)
                {
                    return http_get('/app/data/' + id + '/results.json', successFunction, errorFunction);
                }
            };
        });

To implement:

F1APIService.getDriverDetails(
    456,
    function (response)
    {
        // Do something when successful
    },
    function (response)
    {
        // Handle errors here
    }
);

Answer №3

Upon reviewing the official documentation, it is evident that the URL parameter expects a valid string as input. Simply omit the $http.get method and your code should function properly, but remember to refer back to the documentation for guidance.

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