diff --git a/src/controllers/PostsController.ts b/src/controllers/PostsController.ts
index 3c0b4e4..251a316 100644
--- a/src/controllers/PostsController.ts
+++ b/src/controllers/PostsController.ts
@@ -213,10 +213,7 @@ export class PostsController {
 			
 			// Personnal movies posts
 			case PostKind.POST_KIND_MOVIE:
-				const movieID = h.postInt("movieID");
-
-				if(!await MoviesHelper.DoesUserHas(h.getUserId(), movieID))
-					h.error(401, "You are not authorized to use this movie!");
+				const movieID = await h.postMovieID("movieID");
 				
 				newPost.movieID = movieID;
 
diff --git a/src/entities/BaseRequestsHandler.ts b/src/entities/BaseRequestsHandler.ts
index 06339ca..31e5a4b 100644
--- a/src/entities/BaseRequestsHandler.ts
+++ b/src/entities/BaseRequestsHandler.ts
@@ -18,6 +18,7 @@ import { ConversationsHelper } from "../helpers/ConversationsHelper";
 import { AbstractUserConnectionContainer } from "./UserConnectionContainer";
 import { CustomEmoji } from "./CustomEmoji";
 import { CustomEmojisHelper } from "../helpers/CustomEmojisHelper";
+import { MoviesHelper } from "../helpers/MoviesHelper";
 
 export abstract class BaseRequestsHandler implements AbstractUserConnectionContainer {
 
@@ -437,4 +438,18 @@ export abstract class BaseRequestsHandler implements AbstractUserConnectionConta
 
 		return info;
 	}
+
+	/**
+	 * Get the ID of a movie included in a POST request
+	 * 
+	 * @param name The name of the POSt field containing movie ID
+	 */
+	public async postMovieID(name: string) : Promise<number> {
+		const movieID = this.postInt(name);
+
+		if(!await MoviesHelper.DoesUserHas(this.getUserId(), movieID))
+			this.error(401, "You are not authorized to use this movie!");
+
+		return movieID;
+	}
 }
\ No newline at end of file