`Attachment::save()` returns Result instead of bool (#161)

Returning a result instead of a bool as per #6

src/api/core/ciphers.rs

@@ -492,7 +492,10 @@ fn post_attachment(uuid: String, data: Data, content_type: &ContentType, headers
         };
 
         let attachment = Attachment::new(file_name, cipher.uuid.clone(), name, size);
-        attachment.save(&conn);
+        match attachment.save(&conn) {
+            Ok(()) => (),
+            Err(_) => println!("Error: failed to save attachment")
+        };
     }).expect("Error processing multipart data");
 
     Ok(Json(cipher.to_json(&headers.host, &headers.user.uuid, &conn)))

src/db/models/attachment.rs

@@ -53,13 +53,11 @@ use db::schema::attachments;
 
 /// Database methods
 impl Attachment {
-    pub fn save(&self, conn: &DbConn) -> bool {
-        match diesel::replace_into(attachments::table)
+    pub fn save(&self, conn: &DbConn) -> QueryResult<()> {
+        diesel::replace_into(attachments::table)
             .values(self)
-            .execute(&**conn) {
-            Ok(1) => true, // One row inserted
-            _ => false,
-        }
+            .execute(&**conn)
+            .and(Ok(()))
     }
 
     pub fn delete(self, conn: &DbConn) -> QueryResult<()> {