Switched to using a response model for tracks

src/models/responses/ResponseTrack.ts

@@ -0,0 +1,35 @@
+import {
+    IsInt,
+
+    IsString
+} from "class-validator";
+import { Track } from '../entities/Track';
+
+/**
+ * Defines a track of given length.
+*/
+export class ResponseTrack {
+    /**
+     * Autogenerated unique id (primary key).
+     */
+    @IsInt()
+    id: number;;
+
+    /**
+     * The track's name.
+     */
+    @IsString()
+    name: string;
+
+    /**
+     * The track's length/distance in meters.
+     */
+    @IsInt()
+    distance: number;
+
+    public constructor(track: Track) {
+        this.id = track.id;
+        this.name = track.name;
+        this.distance = track.distance;
+    }
+}