Improve redirection when error occurs

public/scripts/manage/sport.js

@@ -1,7 +1,6 @@
 import * as Data from "../data.js";
 
 
-const mainHeader = document.getElementById('main-header');
 const nameTextbox = document.getElementById('name-textbox');
 const submitButton = document.getElementById('submit-button');
 const deleteButton = document.getElementById('delete-button');
@@ -12,8 +11,6 @@ async function initializeForm() {
     let params = new URLSearchParams(location.search);
     let sportID = params.get('sport')
     if(sportID) {
-        mainHeader.textContent = "Edit Sport";
-
         const sportName = await Data.getSportName(sportID);
 
         nameTextbox.value = sportName;

routes/manage.js

@@ -25,6 +25,9 @@ router.get('/game', checkLoginStatus.user, function(req, res, next) {
 });
 
 router.post('/game', checkLoginStatus.user, async function(req, res, next) {
+  const id = req.body['game'];
+  const remove = req.body['remove'];
+
   try {
     const seasonID = req.body['year'];
     const sportID = req.body['sport'];
@@ -37,9 +40,6 @@ router.post('/game', checkLoginStatus.user, async function(req, res, next) {
     const team2Score = req.body['team2-score'];
     const userID = req.user[0];
   
-    const id = req.body['game'];
-    const remove = req.body['remove'];
-  
     const loggedInUserID = req.user[0];
     const loggedInUserIsAdmin = req.user[2];
   
@@ -63,7 +63,7 @@ router.post('/game', checkLoginStatus.user, async function(req, res, next) {
   } catch(err) {
     console.error("ERROR: " + err.message);
     req.flash("error", "An error has occurred.");
-    res.redirect('/manage/game');
+    res.redirect('/manage/game' + (id ? `?game=${id}` : ''));
   }
 });
 
@@ -72,12 +72,12 @@ router.get('/season', checkLoginStatus.admin, function(req, res, next) {
 });
 
 router.post('/season', checkLoginStatus.admin, async function(req, res, next) {
+  const seasonID = req.body['season'];
+  const remove = req.body['remove'];
+  
   try {
     const year = req.body['year'];
 
-    const seasonID = req.body['season'];
-    const remove = req.body['remove'];
-
     if(remove) await seasons.remove(seasonID);
     else await seasons.add(year);
 
@@ -85,19 +85,22 @@ router.post('/season', checkLoginStatus.admin, async function(req, res, next) {
   } catch(err) {
     console.error("ERROR: " + err.message);
     req.flash("error", "An error has occurred.");
-    res.redirect('/manage/season');
+    res.redirect('/manage/season' + (seasonID ? `?season=${seasonID}` : ''));
   }
 });
 
 router.get('/sport', checkLoginStatus.admin, function(req, res, next) {
-  res.render('manage/addsport', { title: 'Add Sport', userLoggedIn: !!req.user, message: req.flash('error') });
+  let title = req.query.sport ? 'Edit Sport' : 'Add Sport';
+
+  res.render('manage/addsport', { title, userLoggedIn: !!req.user, message: req.flash('error') });
 });
 
 router.post('/sport', checkLoginStatus.admin, async function(req, res, next) {
+  const id = req.body['sport'];
+  const remove = req.body['remove'];
+  
   try {
     const name = req.body['name'];
-    const id = req.body['sport'];
-    const remove = req.body['remove'];
 
     if(remove) await sports.remove(id);
     else if(id) await sports.rename(id, name);
@@ -107,7 +110,7 @@ router.post('/sport', checkLoginStatus.admin, async function(req, res, next) {
   } catch(err) {
     console.error("ERROR: " + err.message);
     req.flash("error", "An error has occurred.");
-    res.redirect('/manage/sport');
+    res.redirect('/manage/sport' + (id ? `?sport=${id}` : ''));
   }
 });
 
@@ -118,14 +121,14 @@ router.get('/division', checkLoginStatus.admin, function(req, res, next) {
 });
 
 router.post('/division', checkLoginStatus.admin, async function(req, res, next) {
+  const id = req.body['division'];
+  const remove = req.body['remove'];
+  
   try {
     const name = req.body['name'];
     const sport = req.body['sport'];
     const genderName = req.body['gender'];
-  
+   
-    const id = req.body['division'];
-    const remove = req.body['remove'];
-  
     if(remove) await divisions.remove(id);
     else if(id) await divisions.rename(id, name);
     else {
@@ -141,7 +144,7 @@ router.post('/division', checkLoginStatus.admin, async function(req, res, next)
   } catch(err) {
     console.error("ERROR: " + err.message);
     req.flash("error", "An error has occurred.");
-    res.redirect('/manage/division');
+    res.redirect('/manage/division' + (id ? `?division=${id}` : ''));
   }
 });