Fixed bugs concerning posts

ref #13

src/models/entities/DistanceDonation.ts

@@ -28,18 +28,10 @@ export class DistanceDonation extends Donation {
    * The donation's amount in cents (or whatever your currency's smallest unit is.).
    * The exact implementation may differ for each type of donation.
    */
-  @IsInt()
-  public get amount() {
-    return this.getAmount();
-  }
-
-  /**
-   * The function that calculates the amount based on the runner object's distance.
-   */
-  public async getAmount(): Promise<number> {
+  public get amount(): number {
     let calculatedAmount = -1;
     try {
-      calculatedAmount = this.amountPerDistance * await this.runner.distance();
+      calculatedAmount = this.amountPerDistance * this.runner.distance;
     } catch (error) {
       throw error;
     }