backend/internal/model/favorite.go

package model

import (
	"time"

	"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 {
	SetUUIDIfEmpty(&f.ID)
	return nil
}

func (Favorite) TableName() string {
	return "favorites"
}