"Efficiently organizing tasks in AngularJS: Utilize Factories for Submitting and Deleting Functions in

While developing a simple To Do App, I noticed that my Controller was getting cluttered with too much code. This made me realize the need to move some of my functions into factories in order to maintain clean and readable code.

Below is my JavaScript code snippet:

angular.module('toDoApp', [])
    .controller('toDoCtrl', function($scope){
        //set $scope variables
        $scope.tasks = [];
        $scope.submitTask = function(){
            $scope.tasks.unshift($scope.enteredTask); 
            $scope.enteredTask = '';
        };
        $scope.removeTask = function(task) {
            var i = $scope.tasks.indexOf(task);
            $scope.tasks.splice(i, 1);
        };
    })
    .factory('toDoFactory', ['$http', function($http){
        return function(newTask) {

        };
    }])

If needed, here is the HTML structure:

<form ng-submit="submitTask()">
    <!-- task input with submit button -->
    <label>Task: </label>
    <input type="text" placeholder="Enter Task" ng-model="enteredTask" required>
    <button>Submit</button>
</form>
<div>
    <!-- create unordered list for tasks that are submitted 
        including check boxes -->
    <ul>
        <li ng-repeat="task in tasks">
            {{ task }}
            <button ng-click="removeTask()">x</button>
        </li>
    </ul>   
</div>

I have started on the factory part but unsure about how to proceed. I would appreciate any guidance or suggestions on this matter.

Answer №1

To implement the functionality, it is crucial to inject your factory into the controller and utilize the factory's methods within the controller:

angular.module('toDoApp', [])
.controller('toDoCtrl', function($scope, toDoFactory){
    //initialize $scope variables
    $scope.tasks = [];
    $scope.submitTask = function(){
        toDofactory.submittask(); //For demonstration purposes only. Adjust parameters as needed.
    };
    $scope.removeTask = function(task) {
        var i = $scope.tasks.indexOf(task);
        $scope.tasks.splice(i, 1);
    };
})
.factory('toDoFactory', ['$http', function($http){
    var methods = {};
    methods.submittask = function(){
        //insert logic here
    };
    methods.removetask = function(){
      //insert logic here
    }
    return methods;
}])

Answer №2

let app = angular.module('taskManager', []);

app.controller('taskCtrl', function($scope, taskService){
        $scope.tasksList = [];
        taskService.fetchTasks = function(){

        }
        taskService.removeTask = function(){

        }
        taskService.editTask = function(){

        }
});

app.factory('taskService', ['$http', function($http){
        let tasks = {};
        tasks.fetchTasks = function(){

        };

        tasks.removeTask = function(){

        };

        tasks.editTask = function(){

        }

        return tasks;

}]);

This approach provides a straightforward structure that can be expanded by adding more functionalities. Remember to utilize dependency injection (DI) effectively.

Answer №3

Check out the final result after all the code is implemented. I appreciate the help and guidance provided in getting me on the right track.

.controller('toDoCtrl', function($scope, toDoFactory){
    $scope.tasks = toDoFactory.tasks;
    $scope.submitTask = function(){
        toDoFactory.submitTask($scope.enteredTask); 
        $scope.enteredTask = '';
    };
    $scope.removeTask = function(task) {
        toDoFactory.removeTask();
    };
})
.factory('toDoFactory', ['$http', function($http){
    var toDo = {
        tasks: [],
        enteredTask: '',
        submitTask: function(task){
            toDo.tasks.unshift(task);
        },
        removeTask: function(task) {
            var i = toDo.tasks.indexOf(task);
            toDo.tasks.splice(i, 1);
        }
    };
}])

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