Reverted to id based relation setter

ref #13

src/models/creation/CreateRunner.ts

@@ -1,10 +1,10 @@
-import { IsInt, IsOptional } from 'class-validator';
+import { IsInt } from 'class-validator';
 import { getConnectionManager } from 'typeorm';
-import { RunnerGroupNeededError, RunnerGroupNotFoundError, RunnerOnlyOneGroupAllowedError } from '../../errors/RunnerErrors';
+import { RunnerGroupNotFoundError } from '../../errors/RunnerErrors';
+import { RunnerOrganisationWrongTypeError } from '../../errors/RunnerOrganisationErrors';
+import { RunnerTeamNeedsParentError } from '../../errors/RunnerTeamErrors';
 import { Runner } from '../entities/Runner';
 import { RunnerGroup } from '../entities/RunnerGroup';
-import { RunnerOrganisation } from '../entities/RunnerOrganisation';
-import { RunnerTeam } from '../entities/RunnerTeam';
 import { CreateParticipant } from './CreateParticipant';
 
 export class CreateRunner extends CreateParticipant {
@@ -14,16 +14,7 @@ export class CreateRunner extends CreateParticipant {
      * Either provide this or his organisation's id.
      */
     @IsInt()
-    @IsOptional()
-    teamId?: number;
-
-    /**
-     * The new runner's organisation's id.
-     * Either provide this or his teams's id.
-     */
-    @IsInt()
-    @IsOptional()
-    orgId?: number;
+    group: number;
 
     /**
      * Creates a Runner entity from this.
@@ -46,23 +37,15 @@ export class CreateRunner extends CreateParticipant {
      * Manages all the different ways a group can be provided.
      */
     public async getGroup(): Promise<RunnerGroup> {
-        let group: RunnerGroup;
-        if (this.teamId !== undefined && this.orgId !== undefined) {
-            throw new RunnerOnlyOneGroupAllowedError();
+        if (this.group === undefined) {
+            throw new RunnerTeamNeedsParentError();
         }
-        if (this.teamId === undefined && this.orgId === undefined) {
-            throw new RunnerGroupNeededError();
+        if (!isNaN(this.group)) {
+            let group = await getConnectionManager().get().getRepository(RunnerGroup).findOne({ id: this.group });
+            if (!group) { throw new RunnerGroupNotFoundError; }
+            return group;
         }
 
-        if (this.teamId) {
-            group = await getConnectionManager().get().getRepository(RunnerTeam).findOne({ id: this.teamId });
-        }
-        if (this.orgId) {
-            group = await getConnectionManager().get().getRepository(RunnerOrganisation).findOne({ id: this.orgId });
-        }
-        if (!group) {
-            throw new RunnerGroupNotFoundError();
-        }
-        return group;
+        throw new RunnerOrganisationWrongTypeError;
     }
 }