Using TypeScript controllers to inject $scope

Currently, I am in the process of creating my initial typescript controller and encountering a slight challenge in comprehending how to utilize $scope effectively in order to reference elements within various code blocks. Below is the relevant snippet of code :

    module app.controllers {

        class TeamsController implements app.domain.Team {

            // Various properties defined here

            static $inject = ['dataAccessService', '$http', '$scope'];

            // Constructor function with dependencies injected
            constructor(private dataAccessService: app.common.DataAccessService, $http: ng.IHttpService, $scope: ng.IScope) {

                this.teams = [];
                this.divisions = [];
                this.coaches = [];

                this.httpService = $http;

                // Retrieving resources using dataAccessService
                var teamResource = dataAccessService.getTeamResource();
                var divisionResource = dataAccessService.getDivisionResource();
                var coachResource = dataAccessService.getCoachResource();

                // Querying resources for data retrieval
                teamResource.query((data: app.domain.Team[]) => {
                    this.teams = data;
                });

                divisionResource.query((data: app.domain.Division[]) => {
                    this.divisions = data;
                });

                coachResource.query((data: app.domain.Coach[]) => {
                    this.coaches = data;
                });

                // Instantiating necessary objects
                this.selectedTeam =
                    new app.domain.Team(0, "", new app.domain.Coach(0, ""), new app.domain.Division(0, ""), "", "", "", "");
                this.teamToBeUpdated =
                    new app.domain.Team(0, "", new app.domain.Coach(0, ""), new app.domain.Division(0, ""), "", "", "", "");
            }

    // Add or Update Team function
    addUpdateTeam(): void {

                if (this.teamToBeUpdated.teamId === 0) {

                    // Additional functionality to be included here

                    // Performing a post request
                    this.httpService.post('http://localhost:33201/api/Teams/Add', this.teamToBeUpdated)
                        .then(function (response) {
                            // Handling success case
                            this.teams.push(response.data);
                            this.teams.sort(function (a, b) {
                                if (a.teamName.toLowerCase() < b.teamName.toLowerCase()) return -1;
                                if (a.teamName.toLowerCase() > b.teamName.toLowerCase()) return 1;
                                return 0;
                            });
                            this.teamToBeUpdated =
                                new app.domain.Team(0, "", new app.domain.Coach(0, ""), new app.domain.Division(0, ""), "", "", "", ""); // Clear form after submission
                        }, function (error) {
                            // Handling failure
                        })
                        .finally(function () {
                        });
                }
            }
}

    // Registration of the controller
    angular.module("app")
        .controller("teamsController", ['dataAccessService', '$http', '$scope', TeamsController]);
}

In the section where this is used above, I aim to replace it with $scope, however, an error '{propertyname} does not exist on type IScope' is raised whenever I attempt to do so. Could someone provide guidance on the correct approach to accomplish this?

Answer №1

If you need specific properties in your interface, you can create an extension of ng.IScope.

interface TeamsScope extends ng.IScope {
  teams: string[]
}

Instead of using ng.IScope, you can use this custom interface in the constructor.

constructor(private dataAccessService: app.common.DataAccessService, $http: ng.IHttpService, $scope: TeamsScope) {

All class properties must be accessed through this.

For instance, to access $scope within a class method:

this.$scope

To maintain lexical scope with $http service handlers, utilize arrow functions.

this.httpService.post('http://localhost:33201/api/Teams/Add', this.teamToBeUpdated)
                        .then((response) => { this.teams = resonse.data});

Learn more about arrow functions here.

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