fix(donations): Move donor over to the types that need it

src/models/actions/create/CreateDonation.ts

@@ -1,4 +1,5 @@
-import { IsInt, IsOptional, IsPositive } from 'class-validator';
+import { Exclude } from 'class-transformer';
+import { IsInt, IsOptional } from 'class-validator';
 import { getConnection } from 'typeorm';
 import { Donation } from '../../entities/Donation';
 import { Donor } from '../../entities/Donor';
@@ -7,13 +8,7 @@ import { Donor } from '../../entities/Donor';
  * This class is used to create a new Donation entity from a json body (post request).
  */
 export abstract class CreateDonation {
-    /**
-     * The donation's associated donor's id.
-     * This is important to link donations to donors.
-     */
-    @IsInt()
-    @IsPositive()
-    @IsOptional()
+    @Exclude()
     donor: number;
 
     /**