Updating MovieModel's Delete method from internal/data/movies.go file. Create the deleteMovieHandler function inside cmd/api/movies.go. Adding the route into routes.go to delete a movie.

internal/data/movies.go

@@ -131,5 +131,32 @@ func (m MovieModel) Update(movie *Movie) error {
 
 // Delete : Deleting a specific record from the movies table
 func (m MovieModel) Delete(id int64) error {
+	// Return an ErrRecordNotFound err if the movie ID is less than 1
+	if id < 1 {
+		return ErrRecordNotFound
+	}
+
+	// Construct the SQL query to delete the record
+	query := `
+		DELETE FROM movies
+		WHERE id = $1`
+
+	// Execute the SQL query using the Exec() method, passing in the id variable as the value for the placeholder parameter. The Exec() method returns a sql.Result object.
+	result, err := m.DB.Exec(query, id)
+	if err != nil {
+		return err
+	}
+
+	// Call the RowsAffected() method on the sql.Result object to get the number of rows after by the query.
+	rowsAffected, err := result.RowsAffected()
+	if err != nil {
+		return err
+	}
+
+	// If no rows were affected, we know that the movies table didn't contain a record with provided ID at the moment we tried to delete it. In that case we return an ErrRecordNotFound error
+	if rowsAffected == 0 {
+		return ErrRecordNotFound
+	}
+
 	return nil
 }