merge #372: README 업데이트 및 이미지 캐싱 개선

[merge] README 업데이트 및 이미지 캐싱 개선
boostcampwm2023 · Dec 14, 2023 · 8aec978 · 8aec978
2 parents dcaf973 + 781d17f
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diff --git a/README.md b/README.md
@@ -1,43 +1,80 @@
-# <img align="left" src="https://github.com/boostcampwm2023/iOS07-traveline/assets/74968390/4e4c84da-d6da-445c-8328-21828a4c162a" width="120px"> 🌎 traveline
-> 여행 일정을 타임라인을 **기록**하고 **공유**하는 서비스 Traveline 입니다.  
-나만의 여행을 공유하고 다양한 여행을 만나보아요 :)
+# 🌎 traveline
+> 여행 일정을 타임라인으로 **기록**하고 **공유**하는 **여행 SNS 서비스**입니다.  
+나만의 여행을 공유하고 다양한 여행들을 만나보아요 :)
+
+<br>
 
 ![기능 소개 페이지](https://github.com/boostcampwm2023/iOS07-traveline/assets/51712973/f39271ee-26a8-41d2-b18d-32d44f79fd43)
 
-### 주요 기능
-**나랑 비슷한 취향과 환경을 가진 다양한 여행들을 만나고 나만의 여행 계획을 짜보아요 !**
+</br>
+
+#### 나랑 비슷한 취향과 환경을 가진 다양한 여행들을 만나고 나만의 여행 계획을 짜보아요 !
 - 지역, 기간, 테마 등 총 8 가지의 필터를 통해 내가 원하는 여행을 찾을 수 있어요.
 - 키워드 검색을 통해 원하는 여행을 바로 탐색할 수 있어요.
 - 매 날짜마다 시간 순으로 기록된 여행들을 통해 보다 쉽게 일정을 확인할 수 있어요.
 - 지도로 보기 기능을 통해 어떤 장소에 머물렀는지 지도로 한눈에 볼 수 있어요.
 
-### Traveline 팀 소개
+<br>
+
+#### Traveline 팀 소개
 |S009 김영인|S013 김태현|S041 홍기웅|J048 박경미|J170 황정민|
 |:-:|:-:|:-:|:-:|:-:|
 |<img src="https://avatars.githubusercontent.com/u/74968390?v=4" width=150>|<img src="https://user-images.githubusercontent.com/51712973/280571628-e1126b86-4941-49fc-852b-9ce16f3e0c4e.jpg" width=150>|<img src="https://avatars.githubusercontent.com/u/91725382?s=400&u=29b8023a56a09685aaab53d4eb0dd556254cd902&v=4" width=150>|<img src="https://github.com/boostcampwm2023/iOS07-Trapture/assets/74968390/76bfffde-8ebc-445d-8f3a-7c21288ae386" width=150>|<img src="https://github.com/boostcampwm2023/iOS07-Trapture/assets/74968390/3f5281e2-d233-49d2-b836-be2a56f93096" width=150>|
 |[@0inn](https://github.com/0inn)|[@kth1210](https://github.com/kth1210)|[@otoolz](https://github.com/otoolz)|[@kmi0817](https://github.com/kmi0817)|[@yaongmeow](https://github.com/yaongmeow)|
+|iOS|iOS|iOS|BE|BE|
 
-## 프로젝트 구조
-### 🍎 iOS
+<br>
 
-### 💽 BE
+## 프로젝트 구조
+|iOS|![프로젝트 구조도](https://github.com/boostcampwm2023/iOS07-traveline/assets/74968390/d4477585-eac2-481c-baf7-80d394eacaae)|
+|:-:|:-:|
+|BE|![image](https://github.com/boostcampwm2023/iOS07-traveline/assets/62174395/79d2c0a6-4e8c-4547-acd6-a2b4ea95ce68)|
 
 <br>
 
-## 🍎 iOS 기술 스택
+## iOS 기술 스택
+
+#### MVVM + CleanArchitecture
+- 현재 서비스 기획 간 복잡한 아키텍처의 필요성을 느끼지 못했고, 작업 간 로직 분리의 용이함을 위해 선택했습니다.
+- 또한 여러 명이 동시에 개발해야하기 때문에 CleanArchitecture를 활용해 역할 분리를 확실히 해두어 코드의 통일성을 유지했습니다.
+- Repository 패턴을 통해 Data Source를 캡슐화할 수 있었고, RepositoryMock을 이용해 서버 개발 상황에 관계없이 개발을 진행할 수 있었습니다.
+#### Combine
+- Third-party인 RxSwift에 비해 시간, 공간적 성능이 우수하기 때문에 First-party인 Combine을 선택했습니다.
+- 데이터 스트리밍을 조작하고 구독하는 것에 최적화된 Combine을 UI Binding에 활용했습니다.
+#### Swift Concurrency
+- Concurrency를 활용해 단발성 비동기 응답인 네트워크 로직을 보다 직관적으로 처리해주기 위해 선택했습니다.
+- Repository - Network의 흐름을 간결하게 작성할 수 있었습니다.
+#### MapKit
+- 지도 위에 마커를 표시하고 정보를 보여주기 위해 사용했습니다.
+- 위치 좌표 정보만 서버에서 받아오면 되기 때문에 다른 Third-party 지도를 사용할 필요가 없다고 생각해 애플 프레임워크인 MapKit을 선택했습니다.
+#### Keychain
+- 로그인 이후 토큰 등 민감한 사용자 정보를 안전하게 저장하고 관리하기 위해 사용했습니다.
 
-### MVVM + CleanArchitecture
-### Combine
-### Swift Concurrency
-### MapKit
-### Keychain
+<br>
 
-## 💽 BE 기술 스택
+## BE 기술 스택
+
+#### NestJS
+#### TypeORM
+#### MySQL
+#### Swagger
+#### NCP
+#### Server
+#### VPC
+#### AI APIs
+- Papago Translation
+- GreenEye
+#### Docker
+#### Docker Hub
+#### Domain
+#### Nginx
+#### GitHub Actions
+#### AWS - SES (Simple Email Service)
 
 <br>
 
 ## 🔥 우리의 도전들
-### 🍎 iOS
+### iOS
 #### - [단방향 플로우 ViewModel 구현기](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BiOS%5D-%EB%8B%A8%EB%B0%A9%ED%96%A5-%ED%94%8C%EB%A1%9C%EC%9A%B0-ViewModel-%EA%B5%AC%ED%98%84%EA%B8%B0)
 #### - [Concurrency와 Combine의 공존](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BiOS%5D-Concurrency%EC%99%80-Combine%EC%9D%98-%EA%B3%B5%EC%A1%B4)
 #### - [traveline의 이미지 관리하기](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BiOS%5D-traveline%EC%9D%98-%EC%9D%B4%EB%AF%B8%EC%A7%80-%EA%B4%80%EB%A6%AC%ED%95%98%EA%B8%B0)
@@ -48,11 +85,16 @@
 #### - [MapKit으로 타임라인 보여주기](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BiOS%5D-MapKit%EC%9C%BC%EB%A1%9C-%ED%83%80%EC%9E%84%EB%9D%BC%EC%9D%B8-%EB%B3%B4%EC%97%AC%EC%A3%BC%EA%B8%B0)
 #### - [작업을 서로 바꿔서 해보자!](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BiOS%5D-%EC%9E%91%EC%97%85%EC%9D%84-%EC%84%9C%EB%A1%9C-%EB%B0%94%EA%BF%94%EC%84%9C-%ED%95%B4%EB%B3%B4%EC%9E%90!)
 
-### 💽 BE
-
-
+### BE
+#### - [생애 첫 CI CD 도전기](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BBE%5D-%EC%83%9D%EC%95%A0-%EC%B2%AB-CI-CD-%EB%8F%84%EC%A0%84%EA%B8%B0)
+#### - [@nestjs/swagger로 이미지 업로드 form을 어떻게 만들지?](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BBE%5D-@nestjs-swagger%EB%A1%9C-%EC%9D%B4%EB%AF%B8%EC%A7%80-%EC%97%85%EB%A1%9C%EB%93%9C-form%EC%9D%84-%EC%96%B4%EB%96%BB%EA%B2%8C-%EB%A7%8C%EB%93%A4%EC%A7%80%3F)
+#### - [클라이언트에서만 발생하는 413 Content Too Large 에러?](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BBE%5D-%ED%81%B4%EB%9D%BC%EC%9D%B4%EC%96%B8%ED%8A%B8%EC%97%90%EC%84%9C%EB%A7%8C-%EB%B0%9C%EC%83%9D%ED%95%98%EB%8A%94-413-Content-Too-Large-%EC%97%90%EB%9F%AC%3F)
+#### - [트랜잭션은 쿼리문만 다루지, 스토리지는 신경 쓰지 않아요](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BBE%5D-%ED%8A%B8%EB%9E%9C%EC%9E%AD%EC%85%98%EC%9D%80-%EC%BF%BC%EB%A6%AC%EB%AC%B8%EB%A7%8C-%EB%8B%A4%EB%A3%A8%EC%A7%80,-%EC%8A%A4%ED%86%A0%EB%A6%AC%EC%A7%80%EB%8A%94-%EC%8B%A0%EA%B2%BD-%EC%93%B0%EC%A7%80-%EC%95%8A%EC%95%84%EC%9A%94)
+#### - [애플 로그인 구현 과정](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BBE%5D-애플-로그인-구현-과정)
+#### - [이메일 서비스 적용 과정](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BBE%5D-이메일-서비스-적용-과정)
+#### - [로그인 로그아웃 처리](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%5BBE%5D-로그인-로그아웃-처리)
 
 <br>
 
-|📚 문서|[Wiki](https://github.com/boostcampwm2023/iOS07-traveline/wiki)|[팀 노션](https://spiky-rat-16e.notion.site/6b9791faac7e4b9d9a31d225ce8cd157?pvs=4)|[그라운드 룰](https://github.com/boostcampwm2023/iOS07-Trapture/wiki/%E2%9C%A8-%ED%8C%80-%EA%B7%B8%EB%9D%BC%EC%9A%B4%EB%93%9C-%EB%A3%B0)|[컨벤션](https://github.com/boostcampwm2023/iOS07-Trapture/wiki/%F0%9F%93%81-%EC%BB%A8%EB%B2%A4%EC%85%98)|[회의록](https://www.notion.so/bd676cad762c4cffa7b081c65939b0c5?v=76fe42efa9f1497b98764bf47ff47598&pvs=4)|[기획/디자인](https://www.figma.com/file/RrmfjBTxuLMAYRiXrbKQSW/traveline?type=design&node-id=2%3A2&mode=design&t=AD0PpylqwYoldl8g-1)|
+|📚 문서|[Wiki](https://github.com/boostcampwm2023/iOS07-traveline/wiki)|[팀 노션](https://spiky-rat-16e.notion.site/6b9791faac7e4b9d9a31d225ce8cd157?pvs=4)|[그라운드 룰](https://github.com/boostcampwm2023/iOS07-traveline/wiki/%ED%8C%80-%EA%B7%B8%EB%9D%BC%EC%9A%B4%EB%93%9C-%EB%A3%B0)|[컨벤션](https://github.com/boostcampwm2023/iOS07-traveline/wiki/GitHub-%EC%BB%A8%EB%B2%A4%EC%85%98)|[회의록](https://www.notion.so/bd676cad762c4cffa7b081c65939b0c5?v=76fe42efa9f1497b98764bf47ff47598&pvs=4)|[기획/디자인](https://www.figma.com/file/RrmfjBTxuLMAYRiXrbKQSW/traveline?type=design&node-id=2%3A2&mode=design&t=AD0PpylqwYoldl8g-1)|
 |:-:|:-:|:-:|:-:|:-:|:-:|:--:|
diff --git a/iOS/traveline/Sources/Core/Cache/ImageCacheRepository.swift b/iOS/traveline/Sources/Core/Cache/ImageCacheRepository.swift
@@ -24,9 +24,6 @@ final class ImageCacheRepositoryImpl: ImageCacheRepository {
 
     init(fileManager: FileManager) {
         self.fileManager = fileManager
-
-        // TODO: - 캐시 정책
-        memoryCache.countLimit = 50
     }
 
     // MARK: - Functions

diff --git a/iOS/traveline/Sources/Core/Cache/TLImageCache.swift b/iOS/traveline/Sources/Core/Cache/TLImageCache.swift
@@ -22,8 +22,8 @@ final class TLImageCache {
         imageCacheRepository.fetch(urlString)
     }
 
-    func store(_ data: Data, urlString: String) {
-        imageCacheRepository.store(data, cacheKey: urlString)
+    func store(_ data: Data, imagePath: String) {
+        imageCacheRepository.store(data, cacheKey: imagePath)
     }
 
 }
diff --git a/iOS/traveline/Sources/Core/Extension/UIImageView+.swift b/iOS/traveline/Sources/Core/Extension/UIImageView+.swift
@@ -11,20 +11,27 @@ import UIKit
 extension UIImageView {
 
     /// urlString으로부터 이미지를 Load 합니다.
+    /// imagePath를 Key로 사용합니다.
     /// 캐시에 존재한다면 캐시에서 가져오고, 없으면 다운로드합니다.
-    /// - Parameter urlString: 이미지 URL 문자열
-    func setImage(from urlString: String?) {
+    /// - Parameters:
+    ///   - urlString: 이미지 URL 문자열
+    ///   - imagePath: 이미지 캐싱 키, nil 시에는 다운로드만 진행
+    func setImage(from urlString: String?, imagePath: String?) {
         guard let urlString else { return }
 
-        if let cachedImageData = TLImageCache.shared.fetch(urlString) {
+        if let imagePath,
+           let cachedImageData = TLImageCache.shared.fetch(imagePath) {
             image = UIImage(data: cachedImageData)
             return
         }
 
         Task {
             guard let downloadImageData = await TLImageDownloader.shared.download(key: self, urlString: urlString) else { return }
-            TLImageCache.shared.store(downloadImageData, urlString: urlString)
             image = UIImage(data: downloadImageData)
+
+            if let imagePath {
+                TLImageCache.shared.store(downloadImageData, imagePath: imagePath)
+            }
         }
     }
 

diff --git a/iOS/traveline/Sources/Data/Network/DataMapping/PostingResponseDTO.swift b/iOS/traveline/Sources/Data/Network/DataMapping/PostingResponseDTO.swift
@@ -15,6 +15,7 @@ struct PostingResponseDTO: Decodable {
     let title: String
     let createdAt: String
     let thumbnail: String?
+    let thumbnailPath: String?
     let period: String
     let headcount: String?
     let budget: String?
@@ -28,7 +29,7 @@ struct PostingResponseDTO: Decodable {
 
     enum CodingKeys: String, CodingKey {
         case createdAt = "created_at"
-        case id, title, thumbnail, period, headcount, budget, location, season, vehicle, theme, withWho, writer, likeds
+        case id, title, thumbnail, thumbnailPath, period, headcount, budget, location, season, vehicle, theme, withWho, writer, likeds
     }
 }
 
@@ -39,9 +40,11 @@ extension PostingResponseDTO {
         return .init(
             id: id,
             imageURL: thumbnail ?? Literal.empty,
+            imagePath: thumbnailPath ?? Literal.empty,
             title: title,
             profile: .init(
                 imageURL: writer.avatar ?? Literal.empty,
+                imagePath: writer.avatarPath ?? Literal.empty,
                 name: writer.name
             ),
             like: Int(likeds) ?? 0,

diff --git a/iOS/traveline/Sources/Data/Network/DataMapping/TimelineDetailResponseDTO.swift b/iOS/traveline/Sources/Data/Network/DataMapping/TimelineDetailResponseDTO.swift
@@ -14,6 +14,7 @@ struct TimelineDetailResponseDTO: Decodable {
     let day: Int
     let description: String
     let image: String?
+    let imagePath: String?
     let coordX: Double?
     let coordY: Double?
     let date: String
@@ -38,6 +39,7 @@ extension TimelineDetailResponseDTO {
             day: day,
             description: description,
             imageURL: image,
+            imagePath: imagePath,
             coordX: coordX,
             coordY: coordY,
             date: date,

diff --git a/iOS/traveline/Sources/Data/Network/DataMapping/TimelineResponseDTO.swift b/iOS/traveline/Sources/Data/Network/DataMapping/TimelineResponseDTO.swift
@@ -19,6 +19,7 @@ struct TimelineResponseDTO: Decodable {
     let title: String
     let description: String
     let image: String?
+    let imagePath: String?
     let coordX: Double?
     let coordY: Double?
     let place: String
@@ -31,6 +32,7 @@ extension TimelineListResponseDTO {
                 .init(
                     detailId: dto.id,
                     thumbnailURL: dto.image,
+                    imagePath: dto.imagePath,
                     title: dto.title,
                     place: dto.place,
                     content: dto.description,

diff --git a/iOS/traveline/Sources/Data/Network/DataMapping/UserResponseDTO.swift b/iOS/traveline/Sources/Data/Network/DataMapping/UserResponseDTO.swift
@@ -11,12 +11,14 @@ import Foundation
 struct UserResponseDTO: Codable {
     let name: String
     let avatar: String?
+    let avatarPath: String?
 }
 
 extension UserResponseDTO {
     func toDomain() -> Profile {
         return .init(
             imageURL: avatar ?? "",
+            imagePath: avatarPath ?? "",
             name: name
         )
     }

diff --git a/iOS/traveline/Sources/Data/Network/DataMapping/WriterDTO.swift b/iOS/traveline/Sources/Data/Network/DataMapping/WriterDTO.swift
@@ -12,4 +12,5 @@ struct WriterDTO: Decodable {
     let id: String
     let name: String
     let avatar: String?
+    let avatarPath: String?
 }
diff --git a/iOS/traveline/Sources/Data/Repository/Mock/UserRepositoryMock.swift b/iOS/traveline/Sources/Data/Repository/Mock/UserRepositoryMock.swift
@@ -22,6 +22,7 @@ final class UserRepositoryMock: UserRepository {
 
         let mockData: Profile = .init(
             imageURL: "https://avatars.githubusercontent.com/u/91725382?s=400&u=29b8023a56a09685aaab53d4eb0dd556254cd902&v=4",
+            imagePath: "https://avatars.githubusercontent.com/u/91725382?s=400&u=29b8023a56a09685aaab53d4eb0dd556254cd902&v=4",
             name: "hongki"
         )
         return mockData
@@ -32,6 +33,7 @@ final class UserRepositoryMock: UserRepository {
 
         return .init(
             imageURL: "https://avatars.githubusercontent.com/u/91725382?s=400&u=29b8023a56a09685aaab53d4eb0dd556254cd902&v=4",
+            imagePath: "https://avatars.githubusercontent.com/u/91725382?s=400&u=29b8023a56a09685aaab53d4eb0dd556254cd902&v=4",
             name: "hongki"
         )
     }

diff --git a/iOS/traveline/Sources/DesignSystem/View/TLList/TLInfoView.swift b/iOS/traveline/Sources/DesignSystem/View/TLList/TLInfoView.swift
@@ -123,9 +123,9 @@ final class TLInfoView: UIView {
     // MARK: - Functions
 
     func setupData(item: TravelListInfo) {
-        thumbnailImageView.setImage(from: item.imageURL)
+        thumbnailImageView.setImage(from: item.imageURL, imagePath: item.imagePath)
         thumbnailImageView.isHidden = item.imageURL.isEmpty
-        profileImageView.setImage(from: item.profile.imageURL)
+        profileImageView.setImage(from: item.profile.imageURL, imagePath: item.profile.imagePath)
         nameLabel.setText(to: item.profile.name)
         likeCountLabel.setText(to: "\(item.like)")
         titleLabel.setText(to: item.title)

diff --git a/iOS/traveline/Sources/Domain/Model/Profile.swift b/iOS/traveline/Sources/Domain/Model/Profile.swift
@@ -10,10 +10,12 @@ import Foundation
 
 struct Profile: Hashable {
     let imageURL: String
+    let imagePath: String
     let name: String
 
     static let empty: Profile = .init(
         imageURL: Literal.empty,
+        imagePath: Literal.empty,
         name: Literal.empty
     )
 }
diff --git a/iOS/traveline/Sources/Domain/Model/Sample/ProfileSample.swift b/iOS/traveline/Sources/Domain/Model/Sample/ProfileSample.swift
@@ -10,6 +10,10 @@ import Foundation
 
 enum ProfileSample {
     static func make() -> Profile {
-        .init(imageURL: "https://avatars.githubusercontent.com/u/74968390?v=4", name: "0inn")
+        .init(
+            imageURL: "https://avatars.githubusercontent.com/u/74968390?v=4",
+            imagePath: "https://avatars.githubusercontent.com/u/74968390?v=4",
+            name: "0inn"
+        )
     }
 }
diff --git a/iOS/traveline/Sources/Domain/Model/Sample/TravelListSample.swift b/iOS/traveline/Sources/Domain/Model/Sample/TravelListSample.swift
@@ -22,8 +22,9 @@ enum TravelListSample {
         return
             .init(id: "1",
                   imageURL: "",
+                  imagePath: "",
                   title: "부산여행",
-                  profile: Profile(imageURL: "", name: "영인"),
+                  profile: Profile(imageURL: "", imagePath: "", name: "영인"),
                   like: 10,
                   isLiked: false,
                   tags: TravelListSample.makeTags()
@@ -34,48 +35,54 @@ enum TravelListSample {
         return [
             .init(id: "1",
                   imageURL: "",
+                  imagePath: "",
                   title: "부산여행",
-                  profile: Profile(imageURL: "", name: "영인"),
+                  profile: Profile(imageURL: "", imagePath: "", name: "영인"),
                   like: 10,
                   isLiked: false,
                   tags: TravelListSample.makeTags()
                  ),
             .init(id: "2",
                   imageURL: "",
+                  imagePath: "",
                   title: "속초여행",
-                  profile: Profile(imageURL: "", name: "0inn"),
+                  profile: Profile(imageURL: "", imagePath: "", name: "0inn"),
                   like: 20,
                   isLiked: true,
                   tags: TravelListSample.makeTags()
                  ),
             .init(id: "3",
                   imageURL: "",
+                  imagePath: "",
                   title: "제주도여행",
-                  profile: Profile(imageURL: "", name: "youngin"),
+                  profile: Profile(imageURL: "", imagePath: "", name: "youngin"),
                   like: 30,
                   isLiked: true,
                   tags: TravelListSample.makeTags()
                  ),
             .init(id: "4",
                   imageURL: "",
+                  imagePath: "",
                   title: "제주도여행",
-                  profile: Profile(imageURL: "", name: "youngin"),
+                  profile: Profile(imageURL: "", imagePath: "", name: "youngin"),
                   like: 30,
                   isLiked: false,
                   tags: TravelListSample.makeTags()
                  ),
             .init(id: "5",
                   imageURL: "",
+                  imagePath: "",
                   title: "제주도여행",
-                  profile: Profile(imageURL: "", name: "youngin"),
+                  profile: Profile(imageURL: "", imagePath: "", name: "youngin"),
                   like: 30,
                   isLiked: true,
                   tags: TravelListSample.makeTags()
                  ),
             .init(id: "6",
                   imageURL: "",
+                  imagePath: "",
                   title: "제주도여행",
-                  profile: Profile(imageURL: "", name: "youngin"),
+                  profile: Profile(imageURL: "", imagePath: "", name: "youngin"),
                   like: 0,
                   isLiked: false,
                   tags: TravelListSample.makeTags()

diff --git a/iOS/traveline/Sources/Domain/Model/Timeline/TimelineCardInfo.swift b/iOS/traveline/Sources/Domain/Model/Timeline/TimelineCardInfo.swift
@@ -13,6 +13,7 @@ typealias TimelineCardList = [TimelineCardInfo]
 struct TimelineCardInfo: Hashable {
     let detailId: String
     let thumbnailURL: String?
+    let imagePath: String?
     let title: String
     let place: String
     let content: String
@@ -23,6 +24,7 @@ struct TimelineCardInfo: Hashable {
     static let empty: Self = .init(
         detailId: Literal.empty,
         thumbnailURL: Literal.empty,
+        imagePath: Literal.empty,
         title: Literal.empty,
         place: Literal.empty,
         content: Literal.empty,