43 lines
974 B
Go
43 lines
974 B
Go
package entity
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import (
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"fmt"
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)
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// Update updates an existing record in the database.
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func Update(m interface{}, keyNames ...string) (err error) {
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// Unscoped so soft-deleted records can still be updated.
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db := UnscopedDb()
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// New entity?
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if db.NewRecord(m) {
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return fmt.Errorf("new record")
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}
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// Extract interface slice with all values including zero.
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values, keys, err := ModelValues(m, keyNames...)
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// Has keys and values?
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if err != nil {
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return err
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} else if len(keys) != len(keyNames) {
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return fmt.Errorf("record keys missing")
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}
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// Update values.
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result := db.Model(m).Updates(values)
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// Successful?
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if result.Error != nil {
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return err
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} else if result.RowsAffected > 1 {
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log.Debugf("entity: updated statement affected more than one record - you may have found a bug")
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return nil
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} else if result.RowsAffected == 1 {
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return nil
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} else if Count(m, keyNames, keys) != 1 {
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return fmt.Errorf("record not found")
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}
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return err
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}
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