fix(crud): skip generated and read-only columns on insert and update

Read-merge-update wrote every model column back, so GENERATED ALWAYS
columns failed with SQLSTATE 428C9. Add a bun 'generated' tag option,
reflection.NonWritableColumns/RemoveNonWritableColumns, and apply them
in resolvespec, restheadspec, websocketspec, mqttspec, resolvemcp and
the nested CUD processor. Add ExcludeColumn to InsertQuery/UpdateQuery
for model-based writes.

.gitea/workflows/release_clients.yml

@@ -129,9 +129,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Set up Rust
-        run: |
-          rustup toolchain install stable --profile minimal
-          rustup default stable
+        uses: dtolnay/rust-toolchain@stable
 
       - name: Test
         run: cargo test
@@ -252,6 +250,12 @@ jobs:
         run: |
           sed -i -E "s/^version: .*/version: ${VERSION}/" pubspec.yaml
           sed -i -E "s#^publish_to: .*#publish_to: ${SERVER_URL}/api/packages/${OWNER}/pub#" pubspec.yaml
+          if ! grep -q "^## ${VERSION}\$" CHANGELOG.md; then
+            { head -n 1 CHANGELOG.md; printf '\n## %s\n\n- Release %s.\n' "$VERSION" "$VERSION"; tail -n +2 CHANGELOG.md; } > CHANGELOG.tmp
+            mv CHANGELOG.tmp CHANGELOG.md
+          fi
+          # pub warns about a dirty git tree; commit the stamped files locally (never pushed)
+          git -c user.name=ci -c user.email=ci@localhost commit -q -am "ci: stamp dart version ${VERSION}"
 
       - name: Dry run
         if: ${{ env.PUBLISH != 'true' }}

clients/resolvespec-dart/pubspec.yaml

@@ -1,6 +1,7 @@
 name: resolvespec
 description: Client for ResolveSpec (JSON body) and FunctionSpec endpoints.
 version: 0.1.0
+repository: https://git.warky.dev/wdevs/ResolveSpec
 publish_to: none
 
 environment:

pkg/common/adapters/database/bun.go

@@ -1507,6 +1507,13 @@ func (b *BunInsertQuery) OnConflict(action string) common.InsertQuery {
 	return b
 }
 
+func (b *BunInsertQuery) ExcludeColumn(columns ...string) common.InsertQuery {
+	if len(columns) > 0 {
+		b.query = b.query.ExcludeColumn(columns...)
+	}
+	return b
+}
+
 func (b *BunInsertQuery) Returning(columns ...string) common.InsertQuery {
 	if len(columns) > 0 {
 		b.query = b.query.Returning(strings.Join(columns, ", "))
@@ -1619,6 +1626,13 @@ func (b *BunUpdateQuery) SetMap(values map[string]interface{}) common.UpdateQuer
 	return b
 }
 
+func (b *BunUpdateQuery) ExcludeColumn(columns ...string) common.UpdateQuery {
+	if len(columns) > 0 {
+		b.query = b.query.ExcludeColumn(columns...)
+	}
+	return b
+}
+
 func (b *BunUpdateQuery) Where(query string, args ...interface{}) common.UpdateQuery {
 	b.query = b.query.Where(query, args...)
 	return b

pkg/common/adapters/database/gorm.go

@@ -751,6 +751,13 @@ func (g *GormInsertQuery) OnConflict(action string) common.InsertQuery {
 	return g
 }
 
+func (g *GormInsertQuery) ExcludeColumn(columns ...string) common.InsertQuery {
+	if len(columns) > 0 {
+		g.db = g.db.Omit(columns...)
+	}
+	return g
+}
+
 func (g *GormInsertQuery) Returning(columns ...string) common.InsertQuery {
 	g.returningColumns = columns
 	return g
@@ -930,6 +937,13 @@ func (g *GormUpdateQuery) SetMap(values map[string]interface{}) common.UpdateQue
 	return g
 }
 
+func (g *GormUpdateQuery) ExcludeColumn(columns ...string) common.UpdateQuery {
+	if len(columns) > 0 {
+		g.db = g.db.Omit(columns...)
+	}
+	return g
+}
+
 func (g *GormUpdateQuery) Where(query string, args ...interface{}) common.UpdateQuery {
 	g.db = g.db.Where(query, args...)
 	return g

pkg/common/adapters/database/pgsql.go

@@ -691,6 +691,13 @@ func (p *PgSQLInsertQuery) OnConflict(action string) common.InsertQuery {
 	return p
 }
 
+func (p *PgSQLInsertQuery) ExcludeColumn(columns ...string) common.InsertQuery {
+	for _, col := range columns {
+		delete(p.values, col)
+	}
+	return p
+}
+
 func (p *PgSQLInsertQuery) Returning(columns ...string) common.InsertQuery {
 	p.returning = columns
 	return p
@@ -850,6 +857,13 @@ func (p *PgSQLUpdateQuery) Set(column string, value interface{}) common.UpdateQu
 	return p
 }
 
+func (p *PgSQLUpdateQuery) ExcludeColumn(columns ...string) common.UpdateQuery {
+	for _, col := range columns {
+		delete(p.sets, col)
+	}
+	return p
+}
+
 func (p *PgSQLUpdateQuery) SetMap(values map[string]interface{}) common.UpdateQuery {
 	pkName := ""
 	if p.model != nil {

pkg/common/interfaces.go

@@ -81,6 +81,8 @@ type InsertQuery interface {
 	Table(table string) InsertQuery
 	Value(column string, value interface{}) InsertQuery
 	OnConflict(action string) InsertQuery
+	// ExcludeColumn omits columns from a Model()-based INSERT (e.g. generated columns).
+	ExcludeColumn(columns ...string) InsertQuery
 	Returning(columns ...string) InsertQuery
 
 	// Execution
@@ -94,6 +96,8 @@ type UpdateQuery interface {
 	Table(table string) UpdateQuery
 	Set(column string, value interface{}) UpdateQuery
 	SetMap(values map[string]interface{}) UpdateQuery
+	// ExcludeColumn omits columns from a Model()-based UPDATE (e.g. generated columns).
+	ExcludeColumn(columns ...string) UpdateQuery
 	Where(query string, args ...interface{}) UpdateQuery
 	Returning(columns ...string) UpdateQuery
 

pkg/common/recursive_crud.go

@@ -116,7 +116,7 @@ func (p *NestedCUDProcessor) ProcessNestedCUD(
 	case "insert", "create", "add":
 		// Only perform insert if we have data to insert
 		if hasData {
-			id, err := p.processInsert(ctx, regularData, tableName)
+			id, err := p.processInsert(ctx, regularData, model, tableName)
 			if err != nil {
 				logger.Error("Insert failed for table=%s, data=%+v, error=%v", tableName, regularData, err)
 				return nil, fmt.Errorf("insert failed: %w", err)
@@ -148,7 +148,7 @@ func (p *NestedCUDProcessor) ProcessNestedCUD(
 			return result, nil
 		}
 		if hasData {
-			rows, err := p.processUpdate(ctx, regularData, tableName, data[pkName])
+			rows, err := p.processUpdate(ctx, regularData, model, tableName, data[pkName])
 			if err != nil {
 				logger.Error("Update failed for table=%s, id=%v, data=%+v, error=%v", tableName, data[pkName], regularData, err)
 				return nil, fmt.Errorf("update failed: %w", err)
@@ -295,10 +295,12 @@ func (p *NestedCUDProcessor) injectForeignKeys(data map[string]interface{}, mode
 func (p *NestedCUDProcessor) processInsert(
 	ctx context.Context,
 	data map[string]interface{},
+	model interface{},
 	tableName string,
 ) (interface{}, error) {
 	logger.Debug("Inserting into %s with data: %+v", tableName, data)
 
+	reflection.RemoveNonWritableColumns(model, data)
 	query := p.db.NewInsert().Table(tableName)
 
 	for key, value := range data {
@@ -335,6 +337,7 @@ func (p *NestedCUDProcessor) processSelect(ctx context.Context, tableName string
 func (p *NestedCUDProcessor) processUpdate(
 	ctx context.Context,
 	data map[string]interface{},
+	model interface{},
 	tableName string,
 	id interface{},
 ) (int64, error) {
@@ -345,6 +348,7 @@ func (p *NestedCUDProcessor) processUpdate(
 
 	logger.Debug("Updating %s with ID %v, data: %+v", tableName, id, data)
 
+	reflection.RemoveNonWritableColumns(model, data)
 	query := p.db.NewUpdate().Table(tableName).SetMap(data).Where(fmt.Sprintf("%s = ?", QuoteIdent(reflection.GetPrimaryKeyName(tableName))), id)
 
 	result, err := query.Exec(ctx)

pkg/common/recursive_crud_test.go

@@ -99,6 +99,7 @@ func (m *mockInsertQuery) Value(column string, value interface{}) InsertQuery {
 	return m
 }
 func (m *mockInsertQuery) OnConflict(action string) InsertQuery { return m }
+func (m *mockInsertQuery) ExcludeColumn(columns ...string) InsertQuery { return m }
 func (m *mockInsertQuery) Returning(columns ...string) InsertQuery { return m }
 func (m *mockInsertQuery) Exec(ctx context.Context) (Result, error) {
 	m.db.insertCalls = append(m.db.insertCalls, m.values)
@@ -131,6 +132,7 @@ func (m *mockUpdateQuery) SetMap(values map[string]interface{}) UpdateQuery {
 	return m
 }
 func (m *mockUpdateQuery) Where(condition string, args ...interface{}) UpdateQuery { return m }
+func (m *mockUpdateQuery) ExcludeColumn(columns ...string) UpdateQuery { return m }
 func (m *mockUpdateQuery) Returning(columns ...string) UpdateQuery { return m }
 func (m *mockUpdateQuery) Exec(ctx context.Context) (Result, error) {
 	// Record the update call

pkg/mqttspec/handler.go

@@ -895,6 +895,9 @@ func (h *Handler) create(hookCtx *HookContext) (interface{}, error) {
 
 	// Insert record
 	query := hookCtx.Tx.NewInsert().Model(hookCtx.ModelPtr).Table(hookCtx.TableName)
+	if generated := reflection.NonWritableColumns(hookCtx.Model); len(generated) > 0 {
+		query = query.ExcludeColumn(generated...)
+	}
 	if _, err := query.Exec(hookCtx.Context); err != nil {
 		return nil, fmt.Errorf("failed to create record: %w", err)
 	}
@@ -924,6 +927,8 @@ func (h *Handler) update(hookCtx *HookContext) error {
 	// the stored value unless disallowNulls is set, in which case null is skipped.
 	values := common.MergeUpdateValues(make(map[string]interface{}, len(updates)), updates, h.disallowNulls)
 
+	reflection.RemoveNonWritableColumns(hookCtx.Model, values)
+
 	if len(values) > 0 {
 		query := hookCtx.Tx.NewUpdate().Table(hookCtx.TableName).SetMap(values).
 			Where(fmt.Sprintf("%s = ?", common.QuoteIdent(pkName)), hookCtx.ID)

pkg/reflection/model_utils.go

@@ -656,7 +656,7 @@ func isColumnWritableInType(typ reflect.Type, columnName string) (found bool, wr
 		// Check bun tag for scanonly
 		bunTag := field.Tag.Get("bun")
 		if bunTag != "" {
-			if isBunFieldScanOnly(bunTag) {
+			if isBunFieldScanOnly(bunTag) || isBunFieldGenerated(bunTag) {
 				return true, false
 			}
 		}
@@ -689,6 +689,70 @@ func isBunFieldScanOnly(tag string) bool {
 	return false
 }
 
+// isBunFieldGenerated checks if a bun tag marks the column as database-generated
+// (GENERATED ALWAYS AS ... STORED), which can be read but never written.
+// Example: "email_normalized,generated" -> true
+func isBunFieldGenerated(tag string) bool {
+	for _, part := range strings.Split(tag, ",") {
+		if strings.TrimSpace(part) == "generated" {
+			return true
+		}
+	}
+	return false
+}
+
+// RemoveNonWritableColumns deletes from values every key that maps to a
+// non-writable model column (bun scanonly/generated, gorm read-only). Used
+// before writing a read-merged record back with UPDATE ... SET.
+func RemoveNonWritableColumns(model any, values map[string]interface{}) {
+	for key := range values {
+		if !IsColumnWritable(model, key) {
+			delete(values, key)
+		}
+	}
+}
+
+// NonWritableColumns returns the column names of the model that cannot be
+// written (bun scanonly/generated, gorm read-only), including embedded structs.
+func NonWritableColumns(model any) []string {
+	t := reflect.TypeOf(model)
+	for t != nil && (t.Kind() == reflect.Pointer || t.Kind() == reflect.Slice || t.Kind() == reflect.Array) {
+		t = t.Elem()
+	}
+	if t == nil || t.Kind() != reflect.Struct {
+		return nil
+	}
+	var cols []string
+	collectNonWritable(t, &cols)
+	return cols
+}
+
+func collectNonWritable(typ reflect.Type, cols *[]string) {
+	for i := 0; i < typ.NumField(); i++ {
+		field := typ.Field(i)
+		if field.Anonymous {
+			ft := field.Type
+			if ft.Kind() == reflect.Pointer {
+				ft = ft.Elem()
+			}
+			if ft.Kind() == reflect.Struct {
+				collectNonWritable(ft, cols)
+				continue
+			}
+		}
+		bunTag, gormTag := field.Tag.Get("bun"), field.Tag.Get("gorm")
+		if bunTag == "-" || gormTag == "-" {
+			continue
+		}
+		if (bunTag != "" && (isBunFieldScanOnly(bunTag) || isBunFieldGenerated(bunTag))) ||
+			(gormTag != "" && isGormFieldReadOnly(gormTag)) {
+			if name := getColumnNameFromField(field); name != "" {
+				*cols = append(*cols, name)
+			}
+		}
+	}
+}
+
 // isGormFieldReadOnly checks if a gorm tag indicates the field is read-only
 // Examples:
 //   - "<-:false" -> true (no writes allowed)

pkg/reflection/model_utils_test.go

@@ -1920,3 +1920,46 @@ func TestMapToStruct_Errors(t *testing.T) {
 		})
 	}
 }
+
+func TestRemoveNonWritableColumns_Generated(t *testing.T) {
+	type m struct {
+		ID    int    `bun:"id,pk"`
+		Email string `bun:"email"`
+		Norm  string `bun:"email_normalized,generated"`
+		Scan  string `bun:"scan_col,scanonly"`
+	}
+	vals := map[string]interface{}{"id": 1, "email": "A", "email_normalized": "a", "scan_col": "x", "dynamic": 1}
+	RemoveNonWritableColumns(&m{}, vals)
+	if _, ok := vals["email_normalized"]; ok {
+		t.Error("generated column not removed")
+	}
+	if _, ok := vals["scan_col"]; ok {
+		t.Error("scanonly column not removed")
+	}
+	if len(vals) != 3 {
+		t.Errorf("unexpected keys: %v", vals)
+	}
+}
+
+func TestNonWritableColumns(t *testing.T) {
+	type base struct {
+		Created string `bun:"created_at,scanonly"`
+	}
+	type m struct {
+		base
+		ID    int    `bun:"id,pk"`
+		Email string `bun:"email"`
+		Norm  string `bun:"email_normalized,generated"`
+		Ro    string `gorm:"column:ro;->"`
+	}
+	got := NonWritableColumns(&m{})
+	want := map[string]bool{"created_at": true, "email_normalized": true, "ro": true}
+	if len(got) != len(want) {
+		t.Fatalf("got %v", got)
+	}
+	for _, c := range got {
+		if !want[c] {
+			t.Errorf("unexpected %s", c)
+		}
+	}
+}

pkg/resolvemcp/handler.go

@@ -559,6 +559,7 @@ func (h *Handler) executeCreate(ctx context.Context, schema, entity string, data
 			if len(cols) == 0 {
 				return invalidArg("no writable fields in data")
 			}
+			reflection.RemoveNonWritableColumns(model, cols)
 			q := tx.NewInsert().Table(tableName)
 			for key, value := range cols {
 				q = q.Value(key, value)
@@ -726,6 +727,7 @@ func (h *Handler) executeUpdate(ctx context.Context, schema, entity, id string,
 			existingMap[key] = v
 		}
 
+		reflection.RemoveNonWritableColumns(model, setCols)
 		q := tx.NewUpdate().Table(tableName).SetMap(setCols).
 			Where(fmt.Sprintf("%s = ?", common.QuoteIdent(pkName)), id)
 		res, err := q.Exec(ctx)

pkg/resolvemcp/writewhere.go

@@ -194,6 +194,7 @@ func (h *Handler) executeWhere(ctx context.Context, req whereRequest) (_ *whereR
 		cond := fmt.Sprintf("%s IN (%s)", common.QuoteIdent(pkName), strings.Join(inList, ", "))
 		var affected int64
 		if req.op == "update" {
+			reflection.RemoveNonWritableColumns(model, setCols)
 			r, err := tx.NewUpdate().Table(tableName).SetMap(setCols).Where(cond, ids...).Exec(ctx)
 			if err != nil {
 				return fmt.Errorf("error updating records: %w", err)

pkg/resolvespec/handler.go

@@ -824,6 +824,7 @@ func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, dat
 			}
 			responseData = v
 
+			reflection.RemoveNonWritableColumns(model, v)
 			query := tx.NewInsert().Table(tableName)
 			for key, value := range v {
 				query = query.Value(key, common.ConvertSliceForBun(value))
@@ -971,6 +972,7 @@ func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, dat
 					item = modifiedData
 				}
 
+				reflection.RemoveNonWritableColumns(model, item)
 				txQuery := tx.NewInsert().Table(tableName)
 				for key, value := range item {
 					txQuery = txQuery.Value(key, common.ConvertSliceForBun(value))
@@ -1127,6 +1129,7 @@ func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, dat
 					itemMap = modifiedData
 				}
 
+				reflection.RemoveNonWritableColumns(model, itemMap)
 				txQuery := tx.NewInsert().Table(tableName)
 				for key, value := range itemMap {
 					txQuery = txQuery.Value(key, common.ConvertSliceForBun(value))
@@ -1322,6 +1325,7 @@ func (h *Handler) handleUpdate(ctx context.Context, w common.ResponseWriter, url
 
 			// Overwrite with every key present in the request (including "" and null unless disallowed)
 			common.MergeUpdateValues(existingMap, updates, h.disallowNulls)
+			reflection.RemoveNonWritableColumns(model, existingMap)
 
 			// Build update query with merged data
 			query := tx.NewUpdate().Table(tableName).SetMap(existingMap)
@@ -1507,6 +1511,7 @@ func (h *Handler) handleUpdate(ctx context.Context, w common.ResponseWriter, url
 
 					// Overwrite with every key present in the request (including "" and null unless disallowed)
 					common.MergeUpdateValues(existingMap, item, h.disallowNulls)
+					reflection.RemoveNonWritableColumns(model, existingMap)
 
 					txQuery := tx.NewUpdate().Table(tableName).SetMap(existingMap).Where(fmt.Sprintf("%s = ?", common.QuoteIdent(pkName)), itemID)
 					if _, err := txQuery.Exec(ctx); err != nil {
@@ -1662,6 +1667,7 @@ func (h *Handler) handleUpdate(ctx context.Context, w common.ResponseWriter, url
 
 						// Overwrite with every key present in the request (including "" and null unless disallowed)
 						common.MergeUpdateValues(existingMap, itemMap, h.disallowNulls)
+						reflection.RemoveNonWritableColumns(model, existingMap)
 
 						txQuery := tx.NewUpdate().Table(tableName).SetMap(existingMap).Where(fmt.Sprintf("%s = ?", common.QuoteIdent(pkName)), itemID)
 						if _, err := txQuery.Exec(ctx); err != nil {

pkg/restheadspec/handler.go

@@ -1410,6 +1410,9 @@ func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, dat
 			if provider, ok := modelValue.(common.TableNameProvider); !ok || provider.TableName() == "" {
 				query = query.Table(tableName)
 			}
+			if generated := reflection.NonWritableColumns(model); len(generated) > 0 {
+				query = query.ExcludeColumn(generated...)
+			}
 			fields := reflection.GetSQLModelColumns(model)
 			query = query.Returning(fields...)
 
@@ -1657,6 +1660,9 @@ func (h *Handler) handleUpdate(ctx context.Context, w common.ResponseWriter, id
 
 		// Create update query using Model() to preserve custom types and driver.Valuer interfaces
 		query := tx.NewUpdate().Model(modelInstance)
+		if generated := reflection.NonWritableColumns(model); len(generated) > 0 {
+			query = query.ExcludeColumn(generated...)
+		}
 		query = query.Where(fmt.Sprintf("%s = ?", common.QuoteIdent(pkName)), targetID)
 
 		// Execute BeforeScan hooks - pass query chain so hooks can modify it

pkg/websocketspec/handler.go

@@ -758,6 +758,9 @@ func (h *Handler) create(hookCtx *HookContext) (interface{}, error) {
 
 	// Insert record
 	query := hookCtx.Tx.NewInsert().Model(hookCtx.ModelPtr).Table(hookCtx.TableName)
+	if generated := reflection.NonWritableColumns(hookCtx.Model); len(generated) > 0 {
+		query = query.ExcludeColumn(generated...)
+	}
 	if _, err := query.Exec(hookCtx.Context); err != nil {
 		return nil, fmt.Errorf("failed to create record: %w", err)
 	}
@@ -786,6 +789,8 @@ func (h *Handler) update(hookCtx *HookContext) error {
 	// the stored value unless disallowNulls is set, in which case null is skipped.
 	values := common.MergeUpdateValues(make(map[string]interface{}, len(updates)), updates, h.disallowNulls)
 
+	reflection.RemoveNonWritableColumns(hookCtx.Model, values)
+
 	if len(values) > 0 {
 		query := hookCtx.Tx.NewUpdate().Table(hookCtx.TableName).SetMap(values).
 			Where(fmt.Sprintf("%s = ?", common.QuoteIdent(pkName)), hookCtx.ID)

pkg/websocketspec/handler_test.go

@@ -226,6 +226,11 @@ func (m *MockInsertQuery) OnConflict(action string) common.InsertQuery {
 	return args.Get(0).(common.InsertQuery)
 }
 
+func (m *MockInsertQuery) ExcludeColumn(columns ...string) common.InsertQuery {
+	args := m.Called(columns)
+	return args.Get(0).(common.InsertQuery)
+}
+
 func (m *MockInsertQuery) Returning(columns ...string) common.InsertQuery {
 	args := m.Called(columns)
 	return args.Get(0).(common.InsertQuery)
@@ -254,6 +259,11 @@ func (m *MockUpdateQuery) Model(model interface{}) common.UpdateQuery {
 	return args.Get(0).(common.UpdateQuery)
 }
 
+func (m *MockUpdateQuery) ExcludeColumn(columns ...string) common.UpdateQuery {
+	args := m.Called(columns)
+	return args.Get(0).(common.UpdateQuery)
+}
+
 func (m *MockUpdateQuery) Table(table string) common.UpdateQuery {
 	args := m.Called(table)
 	return args.Get(0).(common.UpdateQuery)