Can safely get an integer

src/entities/RequestHandler.ts

@@ -66,6 +66,29 @@ export class RequestHandler {
 		return email;
 	}
 
+	/**
+	 * Get an integer included in the request
+	 * 
+	 * @param name Name of POST field
+	 * @param fallback Fallback value (if none, throw an error)
+	 * @returns The number (throws in case of error)
+	 */
+	public postInt(name: string, fallback ?: number) : number {
+		const param = this.getPostParam(name);
+
+		if(param == undefined) {
+			if(!fallback)
+				this.error(400, "Missing integer '"+name+"' in the request!");
+			return fallback;
+		}
+
+		// Check number
+		if(Number.parseInt(param).toString() !== param.toString())
+			this.error(400, "'"+name+"' is an invalid integer!");
+
+		return Number.parseInt(param);
+	}
+
 
 	/**
 	 * Validate API tokens