Cleaned up a load of relations and optional stuff

ref #11

src/models/entities/ScanStation.ts

@@ -1,11 +1,11 @@
-import { Entity, PrimaryGeneratedColumn, Column, ManyToOne, OneToMany } from "typeorm";
 import {
   IsBoolean,
   IsInt,
   IsNotEmpty,
   IsOptional,
-  IsString,
+  IsString
 } from "class-validator";
+import { Column, Entity, ManyToOne, OneToMany, PrimaryGeneratedColumn } from "typeorm";
 import { Track } from "./Track";
 import { TrackScan } from "./TrackScan";
 
@@ -18,14 +18,13 @@ export class ScanStation {
    * Autogenerated unique id (primary key).
    */
   @PrimaryGeneratedColumn()
-  @IsOptional()
   @IsInt()
   id: number;
 
   /**
    * The station's description.
    */
-  @Column({nullable: true})
+  @Column({ nullable: true })
   @IsOptional()
   @IsString()
   description?: string;
@@ -34,7 +33,7 @@ export class ScanStation {
    * The track this station is associated with.
    */
   @IsNotEmpty()
-  @ManyToOne(() => Track, track => track.stations, { nullable: true })
+  @ManyToOne(() => Track, track => track.stations, { nullable: false })
   track: Track;
 
   /**