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backend/internal/model/favorite.go

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package model
import (
"time"
"github.com/google/uuid"
"gorm.io/gorm"
)
// Favorite 收藏
type Favorite struct {
ID string `json:"id" gorm:"type:varchar(36);primaryKey"`
PostID string `json:"post_id" gorm:"type:varchar(36);not null;index;uniqueIndex:idx_favorite_post_user,priority:1"`
UserID string `json:"user_id" gorm:"type:varchar(36);not null;index;uniqueIndex:idx_favorite_post_user,priority:2"`
CreatedAt time.Time `json:"created_at" gorm:"autoCreateTime"`
}
// BeforeCreate 创建前生成UUID
func (f *Favorite) BeforeCreate(tx *gorm.DB) error {
if f.ID == "" {
f.ID = uuid.New().String()
}
return nil
}
func (Favorite) TableName() string {
return "favorites"
}