Fix answer submission failing

main.go

@@ -6,10 +6,10 @@ import (
 	"html/template"
 	"log"
 	"net/http"
+
 	_ "github.com/mattn/go-sqlite3"
 )
 
-
 type Question struct {
 	ID           int
 	QuestionText string
@@ -19,7 +19,7 @@ type Question struct {
 var db *sql.DB
 
 func renderForm(w http.ResponseWriter, r *http.Request) {
-    rows, err := db.Query("SELECT question_text, question_type FROM questions ORDER BY question_order")
+	rows, err := db.Query("SELECT id, question_text, question_type FROM questions ORDER BY question_order")
 	if err != nil {
 		log.Printf("Error fetching questions: %v\n", err)
 		http.Error(w, "Failed to fetch form questions", http.StatusInternalServerError)
@@ -31,7 +31,7 @@ func renderForm(w http.ResponseWriter, r *http.Request) {
 
 	for rows.Next() {
 		var question Question
-        err := rows.Scan(&question.QuestionText, &question.QuestionType)
+		err := rows.Scan(&question.ID, &question.QuestionText, &question.QuestionType)
 		if err != nil {
 			log.Printf("Error scanning question: %v\n", err)
 			continue
@@ -49,43 +49,49 @@ func handleFormSubmit(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-    r.ParseForm()
+	err := r.ParseForm()
-
-    rows, err := db.Query("SELECT id FROM questions")
 	if err != nil {
-        log.Printf("Error fetching questions: %v\n", err)
+		log.Printf("Error parsing form: %v\n", err)
-        http.Error(w, "Failed to fetch questions", http.StatusInternalServerError)
+		http.Error(w, "Failed to parse form", http.StatusInternalServerError)
 		return
 	}
-    defer rows.Close()
+	insertAnswerQuery := `INSERT INTO answers (question_id, answer) VALUES (?, ?)`
 
-    var questionID int
+	tx, err := db.Begin()
-    for rows.Next() {
-        err := rows.Scan(&questionID)
 	if err != nil {
-            log.Printf("Error scanning question ID: %v\n", err)
+		log.Printf("Error starting transaction: %v\n", err)
+		http.Error(w, "Failed to save answers", http.StatusInternalServerError)
+		return
+	}
+	defer func() {
+		if err != nil {
+			tx.Rollback()
+		} else {
+			tx.Commit()
+		}
+	}()
+
+	for key, values := range r.Form {
+		if len(key) > 7 && key[:7] == "custom_" {
+			var questionID int
+			_, err := fmt.Sscanf(key, "custom_%d", &questionID)
+			if err != nil {
+				log.Printf("Error parsing question ID from field name %s: %v\n", key, err)
 				continue
 			}
-        fieldName := fmt.Sprintf("custom_%d", questionID)
-        fieldValue := r.FormValue(fieldName)
 
-        if fieldValue != "" {
+			answer := values[0]
-            insertQuery := `INSERT INTO answers (question_id, answer) VALUES (?, ?)`
+			_, err = tx.Exec(insertAnswerQuery, questionID, answer)
-            _, err = db.Exec(insertQuery, questionID, fieldValue)
 			if err != nil {
-                log.Printf("Error saving answer: %v\n", err)
+				log.Printf("Error saving answer for question %d: %v\n", questionID, err)
-                http.Error(w, "Failed to save answer", http.StatusInternalServerError)
+				http.Error(w, "Failed to save answers", http.StatusInternalServerError)
 				return
 			}
-        } else {
-            log.Printf("No answer found for question %d", questionID)
 		}
 	}
-
 	fmt.Fprintf(w, "Thank you for your submission!")
 }
 
-
 func handleAdmin(w http.ResponseWriter, r *http.Request) {
 	rows, err := db.Query(`
 		SELECT q.question_text, a.answer 
@@ -142,7 +148,6 @@ func handleAddQuestion(w http.ResponseWriter, r *http.Request) {
 	http.Redirect(w, r, "/manage", http.StatusSeeOther)
 }
 
-
 func handleManage(w http.ResponseWriter, r *http.Request) {
 	rows, err := db.Query("SELECT id, question_text, question_type FROM questions ORDER BY question_order")
 	if err != nil {
@@ -189,7 +194,6 @@ func handleRemoveQuestion(w http.ResponseWriter, r *http.Request) {
 	http.Redirect(w, r, "/manage", http.StatusSeeOther)
 }
 
-
 func main() {
 	var err error