Enhance comment functionality with image support and validation.

server/model/comment.go

@@ -13,21 +13,29 @@ type Comment struct {
 	UserID     uint     `gorm:"not null"`
 	User       User     `gorm:"foreignKey:UserID"`
 	Resource   Resource `gorm:"foreignKey:ResourceID"`
+	Images     []Image  `gorm:"many2many:comment_images;"`
 }
 
 type CommentView struct {
-	ID        uint      `json:"id"`
-	Content   string    `json:"content"`
-	CreatedAt time.Time `json:"created_at"`
-	User      UserView  `json:"user"`
+	ID        uint        `json:"id"`
+	Content   string      `json:"content"`
+	CreatedAt time.Time   `json:"created_at"`
+	User      UserView    `json:"user"`
+	Images    []ImageView `json:"images"`
 }
 
 func (c *Comment) ToView() *CommentView {
+	imageViews := make([]ImageView, 0, len(c.Images))
+	for _, img := range c.Images {
+		imageViews = append(imageViews, img.ToView())
+	}
+
 	return &CommentView{
 		ID:        c.ID,
 		Content:   c.Content,
 		CreatedAt: c.CreatedAt,
 		User:      c.User.ToView(),
+		Images:    imageViews,
 	}
 }
 
@@ -37,14 +45,21 @@ type CommentWithResourceView struct {
 	CreatedAt time.Time    `json:"created_at"`
 	Resource  ResourceView `json:"resource"`
 	User      UserView     `json:"user"`
+	Images    []ImageView  `json:"images"`
 }
 
 func (c *Comment) ToViewWithResource() *CommentWithResourceView {
+	imageViews := make([]ImageView, 0, len(c.Images))
+	for _, img := range c.Images {
+		imageViews = append(imageViews, img.ToView())
+	}
+
 	return &CommentWithResourceView{
 		ID:        c.ID,
 		Content:   c.Content,
 		CreatedAt: c.CreatedAt,
 		Resource:  c.Resource.ToView(),
 		User:      c.User.ToView(),
+		Images:    imageViews,
 	}
 }