BE: [feat] 갤러리 프리뷰 내용 반환 CSID-DGU#83

src/backend/src/main/java/RunningMachines/R2R/domain/crew/post/gallery/dto/GallerySimpleResponseDto.java

@@ -11,4 +11,5 @@
 public class GallerySimpleResponseDto {
     private Long postId;
     private String imageUrl;
+    private String content;
 }

src/backend/src/main/java/RunningMachines/R2R/domain/crew/post/gallery/service/GalleryPostQueryService.java

@@ -61,6 +61,9 @@ public GalleryPreviewResponseDto getGalleryPreview(Long crewId) {
                 .map(post -> GallerySimpleResponseDto.builder()
                         .postId(post.getId())
                         .imageUrl(post.getImages().get(0).getImageUrl())
+                        .content(post.getContent() != null && post.getContent().length() > 30
+                                ? post.getContent().substring(0, 20) + "..."
+                                : post.getContent())
                         .build())
                 .collect(Collectors.toList());