36092f542c
- flushStatementAfterCommit marks the statement; AfterCommit logs a warning when work is buffered on a flushed statement that no longer holds GORM's transaction. Log-only: the work still never runs, the write succeeds - subtests pin the late callback warning, a callback between commit and flush, and a reused chained statement staying silent - README OnDatabase example registers After(gorm:create).Before(commit), matching docs/database/transactions.md - RegisterJoinTable: pivot-ordered reads join the pivot table explicitly; a Preload cannot be ordered by a pivot column
34 lines
1.2 KiB
Go
34 lines
1.2 KiB
Go
package lagoon
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import (
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"fmt"
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"gorm.io/gorm"
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)
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// RegisterJoinTable wraps db.SetupJoinTable so a nil db returns an error
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// instead of panicking.
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//
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// Pivot-write contract: pivot tables with business columns (sort_order,
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// role, granted_at, granted_by) are never written through
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// db.Model(&owner).Association(field).Append/Replace(...). GORM's
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// Association Mode has no documented path to set those columns. Writes go
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// through an explicit delete-then-bulk-insert (or ON CONFLICT DO UPDATE)
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// against the join table directly, in the same transaction as the parent
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// save.
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//
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// Reads in pivot order join the pivot table explicitly: Joins on the join
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// table plus Order on its columns. A Preload of the field still loads the
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// targets through the pivot model once RegisterJoinTable has run, but GORM
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// issues that query without the join table, so ordering it by a pivot
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// column fails with a missing FROM-clause entry.
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func RegisterJoinTable(db *gorm.DB, owner any, field string, joinModel any) error {
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if db == nil {
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return fmt.Errorf("lagoon: register join table: db is nil")
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}
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if err := db.SetupJoinTable(owner, field, joinModel); err != nil {
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return fmt.Errorf("lagoon: register join table: %w", err)
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}
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return nil
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}
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