As I delve into the world of AngularJS, dealing with dependency injections, factories, and SignalR hubs, a puzzling error emerges: "Unknown provider: personHubProvider <- personHub". The root cause eludes me despite my best efforts.
Here is an overview of my code:
To begin, I define the module:
var ucp = angular.module('UCP', []);
This module is referenced in the html tag using ng-app="UCP".
Subsequently, I configure the ucp module for hub settings and establish a signalRHub factory to streamline hub retrieval:
ucp.config(function($routeProvider) {
//Routes declaration (excluded as it seems unrelated to the issue at hand)
$.support.cors = true;
$.connection.hub.url = config.signalR.connectionURL;
$.connection.hub.logging = config.signalR.logging;
$.connection.hub.start();
}).factory('signalRHub', [function() {
return {
person: $.connection.Persons.server
};
}]);
Next, I create another factory to handle data retrieval from the server:
ucp.factory('personHub', ['signalRHub', function(signalRHub) {
return {
get: function(onsuccess, onerror) {
signalRHub.person.get()
.done(function(persons) {
onsuccess(persons);
})
.fail(function(error) {
onerror(error);
});
}
}
}]);
I inject this factory into my controller to facilitate retrieving server data and updating the scope for display in the browser:
ucp.controller('personController', ['$scope', 'personHub', function($scope, personHub){
var self = this;
$scope.init = function() {
personHub.get(self.ongetsuccess, self.ongeterror);
}
self.ongetsuccess = function(persons) {
$scope.persons = persons;
};
self.ongeterror = function(error) {
};
}]);
Upon opening the webpage, the dreaded error surfaces: "Error: Unknown provider: personHubProvider <- personHub". It appears that an issue in creating the personHub factory service cascades into a Dependency Injection error for the controller. My inquiry revolves around pinpointing the error source - where did I misstep in implementing the personHub factory?