recreate db view on startup

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## [Unreleased]
+
+- Fix: Recreate the database view during startup in case changes didn't propagate after a version change.
+
 ## [2.41.0] - 11.08.2024
 
 - Update: Update go minor version (1.21.13) and related packages (bug and security fixes).

README.md

@@ -15,6 +15,10 @@ You also can easily export all flight records into EASA style pdf format, print
 
 # Changelog
 
+## [Unreleased]
+
+- Fix: Recreate the database view during startup in case changes didn't propagate after a version change.
+
 ## [2.41.0] - 11.08.2024
 
 - Update: Update go minor version (1.21.13) and related packages (bug and security fixes).
@@ -32,12 +36,6 @@ You also can easily export all flight records into EASA style pdf format, print
 
 - Fix: Incorrect night time calculation when flying inside the polar circle
 
-## [2.38.0] - 25.06.2024
-
-- Fix: Bug with columns for the extended PDF format, both A4 and A5.
-- Update: Update golang to 1.21.11 and golang packages
-- Fix: The daterange picker on the main Logbook page didn't recognize the settings for the first day of the week (Monday or Sunday)
-
 The full changelog is [here](https://github.com/vsimakhin/web-logbook/blob/main/CHANGELOG.md)
 
 # Usage

internal/driver/db_operations.go

@@ -15,7 +15,7 @@ const (
 	createTable = iota
 	getColumns  = iota
 	alterTable  = iota
-	checkView   = iota
+	dropView    = iota
 	createView  = iota
 	checkIndex  = iota
 	createIndex = iota
@@ -30,7 +30,7 @@ var queries = map[string]map[int]string{
 		createTable: "CREATE TABLE %s (%s %s PRIMARY KEY)",
 		getColumns:  "PRAGMA table_info(%s)",
 		alterTable:  "ALTER TABLE %s ADD COLUMN %s %s",
-		checkView:   "SELECT * FROM %s WHERE 1=2",
+		dropView:    "DROP VIEW IF EXISTS %s",
 		createView:  "CREATE VIEW %s AS %s",
 		checkIndex:  "PRAGMA index_list(%s)",
 		createIndex: "CREATE INDEX %s ON %s (%s)",
@@ -40,7 +40,7 @@ var queries = map[string]map[int]string{
 		createTable: "CREATE TABLE %s (%s %s PRIMARY KEY);",
 		getColumns:  "SHOW COLUMNS FROM %s",
 		alterTable:  "ALTER TABLE %s ADD COLUMN %s %s",
-		checkView:   "SELECT * FROM %s WHERE 1=2",
+		dropView:    "DROP VIEW IF EXISTS %s",
 		createView:  "CREATE VIEW %s AS %s",
 		checkIndex:  "SHOW INDEX FROM %s",
 		createIndex: "CREATE INDEX %s ON %s (%s)",
@@ -225,21 +225,26 @@ func (v *View) initView(db *sql.DB, engine string) error {
 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 	defer cancel()
 
-	if !v.isExists(ctx, db, engine) {
-		err := v.createView(ctx, db, engine)
-		if err != nil {
-			return err
-		}
+	v.dropView(db, engine)
+	err := v.createView(ctx, db, engine)
+	if err != nil {
+		return err
 	}
 	return nil
 }
 
-// isExists checks if the view exists in the database.
-func (v *View) isExists(ctx context.Context, db *sql.DB, engine string) bool {
-	query := fmt.Sprintf(queries[engine][checkView], v.Name)
+// dropView drops the view from the database.
+func (v *View) dropView(db *sql.DB, engine string) error {
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	query := fmt.Sprintf(queries[engine][dropView], v.Name)
 	_, err := db.ExecContext(ctx, query)
+	if err != nil {
+		return err
+	}
 
-	return err == nil
+	return nil
 }
 
 // createView creates the view in the database.

internal/driver/db_structure.go

@@ -103,7 +103,7 @@ var logbookView = NewView("logbook_view",
 				iif(day_landings='',0,day_landings) as day_landings, 
 				iif(night_landings='',0,night_landings) as night_landings,
 				night_time, ifr_time, pic_time, co_pilot_time, dual_time, 
-				instructor_time, sim_type, sim_time, pic_name, remarks, update_time
+				instructor_time, sim_type, sim_time, pic_name, remarks, IFNULL(update_time,0) as update_time
 			FROM logbook;
 			`,
 		MySQL: `
@@ -114,7 +114,7 @@ var logbookView = NewView("logbook_view",
 				IF(day_landings='',0,day_landings) as day_landings, 
 				IF(night_landings='',0,night_landings) as night_landings,
 				night_time, ifr_time, pic_time, co_pilot_time, dual_time, 
-				instructor_time, sim_type, sim_time, pic_name, remarks, update_time
+				instructor_time, sim_type, sim_time, pic_name, remarks, IFNULL(update_time,0) as update_time
 			FROM logbook;
 		`,
 	},

internal/models/licensing.go

@@ -14,7 +14,7 @@ func (m *DBModel) GetLicenses() ([]License, error) {
 	var licenses []License
 
 	query := "SELECT uuid, category, name, number, issued, " +
-		"valid_from, valid_until, document_name, document, update_time " +
+		"valid_from, valid_until, document_name, document, IFNULL(update_time,0) as update_time " +
 		"FROM licensing ORDER BY category, name"
 	rows, err := m.DB.QueryContext(ctx, query)
 
@@ -44,7 +44,7 @@ func (m *DBModel) GetLicenseRecordByID(uuid string) (License, error) {
 	var lic License
 
 	query := "SELECT uuid, category, name, number, issued, " +
-		"valid_from, valid_until, remarks, document_name, document, update_time " +
+		"valid_from, valid_until, remarks, document_name, document, IFNULL(update_time,0) as update_time " +
 		"FROM licensing WHERE uuid = ?"
 	row := m.DB.QueryRowContext(ctx, query, uuid)