Method Only

pkg/database/ent/alert_query.go:207–220

Only returns a single Alert entity found by the query, ensuring it only returns one. Returns a *NotSingularError when more than one Alert entity is found. Returns a *NotFoundError when no Alert entities are found.

(ctx context.Context)

// Returns a *NotSingularError when more than one Alert entity is found.
// Returns a *NotFoundError when no Alert entities are found.
func (_q *AlertQuery) Only(ctx context.Context) (*Alert, error) {
	nodes, err := _q.Limit(2).All(setContextOp(ctx, _q.ctx, ent.OpQueryOnly))
	if err != nil {
		return nil, err
	}
	switch len(nodes) {
	case 1:
		return nodes[0], nil
	case 0:
		return nil, &NotFoundError{alert.Label}
	default:
		return nil, &NotSingularError{alert.Label}
	}
}

// OnlyX is like Only, but panics if an error occurs.
func (_q *AlertQuery) OnlyX(ctx context.Context) *Alert {