45 lines
924 B
Go
45 lines
924 B
Go
package models
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import (
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"crypto/md5"
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"encoding/hex"
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"gorm.io/gorm"
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)
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type Album struct {
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Model
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Title string `gorm:"not null"`
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ParentAlbumID *int
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ParentAlbum *Album
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// OwnerID int `gorm:"not null"`
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// Owner User
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Owners []User `gorm:"many2many:user_albums"`
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Path string `gorm:"not null"`
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PathHash string `gorm:"unique"`
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}
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func (a *Album) FilePath() string {
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return a.Path
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}
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func (a *Album) BeforeSave(tx *gorm.DB) (err error) {
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hash := md5.Sum([]byte(a.Path))
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a.PathHash = hex.EncodeToString(hash[:])
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return nil
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}
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func (a *Album) GetChildren(db *gorm.DB) (children []*Album, err error) {
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err = db.Raw(`
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WITH recursive sub_albums AS (
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SELECT * FROM albums AS root WHERE id = ?
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UNION ALL
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SELECT child.* FROM albums AS child JOIN sub_albums ON child.parent_album_id = sub_albums.id
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)
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SELECT * FROM sub_albums
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`, a.ID).Find(&children).Error
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return children, err
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}
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