fix errors when empty optinal values

build-deb/taskmanager/DEBIAN/control

@@ -8,4 +8,4 @@ Depends: gunicorn, python3-flask-sqlalchemy
 Homepage: https://gitea.dmz.rs/Decentrala/taskmanager
 Maintainer: Decentrala <dmz@dmz.rs>
 Description: Interactive TODO list Web app
-Version: 1.0.7
+Version: 1.0.9

taskmanager/routes.py

@@ -25,16 +25,13 @@ def addtask():
         taskdesc = request.form['taskdesc']
         username = request.form['username']
         # Input sanitation
+        # Task name
         if not taskname.isalnum():
             return render_template('response.html', response = "Task name has to be made only of letters or numbers.")
-        if not username.isalnum():
-            return render_template('response.html', response = "Username has to be made only of letters or numbers.")
-        if not taskdesc.isprintable():
-            return render_template('response.html', response = "Task description has to be made of printable characters.")
         if len(taskname) < 1 or len(taskname) > 40:
             return render_template('response.html', response = "Task name lenght invalid, only smaller then 40 charachters allowed")
-        if len(taskdesc) > 2000:
-            return render_template('response.html', response = "Task description lenght invalid, only smaller then 2000 charachters allowed")
+
+        # Username
         if username == "":
             creatorid = None
         else:
@@ -44,6 +41,13 @@ def addtask():
                 return render_template('response.html', response = 'No user with this username. Please <a href="/register">register</a>.')
             if creatorid is None:
                 return render_template('response.html', response = 'No user with this username. Please <a href="/register">register</a>.')
+ 
+        # Task descripton
+        if taskdesc != '':
+            if not taskdesc.isprintable():
+                return render_template('response.html', response = "Task description has to be made of printable characters.")
+            if len(taskdesc) > 2000:
+                return render_template('response.html', response = "Task description lenght invalid, only smaller then 2000 charachters allowed")
         sqladdtask = Task(name = taskname, desc = taskdesc, creatorid = creatorid)
         try:
             db.session.add(sqladdtask)
@@ -60,18 +64,27 @@ def register():
         username = request.form['username']
         contact = request.form['contact']
         password = request.form['password']
+
+        # Username
         if not username.isalnum():
             return render_template('response.html', response = "Username has to be made only of letters or numbers.")
-        if not contact.isprintable():
-            return render_template('response.html', response = "Contact information has to be made of printable characters.")
-        if not password.isprintable():
-            return render_template('response.html', response = "Password has to be made of printable characters.")
         if len(username) < 1 or len(username) > 40:
             return render_template('response.html', response = "Username lenght invalid, only smaller then 40 charachters allowed")
-        if len(contact) > 100:
-            return render_template('response.html', response = "Contact lenght invalid, only smaller then 100 charachters allowed")
-        if len(password) > 500:
-            return render_template('response.html', response = "Password lenght invalid, only smaller then 500 charachters allowed")
+
+        # Contact
+        if contact != '':
+            if not contact.isprintable():
+                return render_template('response.html', response = "Contact information has to be made of printable characters.")
+            if len(contact) > 100:
+                return render_template('response.html', response = "Contact lenght invalid, only smaller then 100 charachters allowed")
+
+        # Password
+        if password != '':
+            if not password.isprintable():
+                return render_template('response.html', response = "Password has to be made of printable characters.")
+            if len(password) > 500:
+                return render_template('response.html', response = "Password lenght invalid, only smaller then 500 charachters allowed")
+
         sqladduser = User(username = username, contact = contact, password = password)
         try:
             db.session.add(sqladduser)
@@ -96,9 +109,8 @@ def project(task_id:int):
     if request.method == 'GET':
         return render_template("project.html", task = task, users = users)
     elif request.method == 'POST':
+        # Assigning user to task
         username = request.form['username']
-        if len(username) < 1 or len(username) > 40:
-            return render_template('response.html', response = "Username lenght invalid, only smaller then 40 charachters allowed")
         for user in users:
             if username == user.username:
                 return render_template('response.html', response = 'User already added to task')

taskmanager/templates/response.html

@@ -4,7 +4,7 @@
 	<meta charset="utf-8" />
 	<meta name="viewport" content="width=device-width, initial-scale=1" />
 	<link rel="stylesheet" href="/static/style.css" />
-	<title>{{task.name}}</title>
+	<title>{{response}}</title>
 </head>
 <body>
 	<header>