41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
package entity
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// PhotoKeyword represents the many-to-many relation between Photo and Keyword
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type PhotoKeyword struct {
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PhotoID uint `gorm:"primary_key;auto_increment:false"`
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KeywordID uint `gorm:"primary_key;auto_increment:false;index"`
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}
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// TableName returns PhotoKeyword table identifier "photos_keywords"
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func (PhotoKeyword) TableName() string {
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return "photos_keywords"
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}
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// NewPhotoKeyword registers a new PhotoKeyword relation
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func NewPhotoKeyword(photoID, keywordID uint) *PhotoKeyword {
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result := &PhotoKeyword{
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PhotoID: photoID,
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KeywordID: keywordID,
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}
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return result
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}
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// Create inserts a new row to the database.
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func (m *PhotoKeyword) Create() error {
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return Db().Create(m).Error
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}
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// FirstOrCreatePhotoKeyword returns the existing row, inserts a new row or nil in case of errors.
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func FirstOrCreatePhotoKeyword(m *PhotoKeyword) *PhotoKeyword {
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result := PhotoKeyword{}
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if err := Db().Where("photo_id = ? AND keyword_id = ?", m.PhotoID, m.KeywordID).First(&result).Error; err == nil {
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return &result
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} else if err := m.Create(); err != nil {
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// Already exists.
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return nil
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}
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return m
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}
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