Welcome to TechScreen

Welcome to the TechScreen site. This side shall support the exchange of knowledge in the domain of Web Engineering and related aspects. As a side effect, this side is used for research on knowledge management technologies. User can pose challenges in the problem domain and can participate in quizzes. Further a bibliography about arcticles in different related domains is continously extended. Finally, questionnaires on different issues are provided. To be able to participate you need an account and a password from TU Wien's TISS system.

Postman file sending via form-data not working

I am trying to test my written node-js backend. So i try to send a file over a POST request via Postman and multipart/form-data to the backend. If i am sending the file via postman the backend the payload is undefined. But it's working if I am sending it over a classic html form. Any suggestions?

Testing Angular Components

Angular is one of the most modern frameworks for frontend development. While unit testing in backend is nothing special these days and will be practiced in nearly every project. But it's very rare to test frontend components. Which tools/frameworks would you recommend for frontend testing?

Websocket interactions in Docker

I am trying to get my Websocket server (Java) and client (JS) to interact with each other when they are both running in separate Docker containers. However, no matter what I do, I cannot get the client to even establish a connection to the server. What can be done here?

Microsoft Office 365 Abo from TU Wien

TU Wien offers software for students. One software is a Microsoft Office 365 subscription for students to a good price. For this subscription, you receive a Microsoft account to login and download the software you need. After one year this subscription expires and you have to buy a new subscription and receive a new Microsoft account login. When I bought the subscription for the second year, the account on my Windows 8 notebook was not updated to the new credentials, even after multiple successful login attempts.

Deleted .iml File in IntelliJ

Unfortunately i somehow deleted my Applications .iml file. Now my Project somehow seems broken because my modules are not displayed anymore.

Managing my ToDos

I like being organized, and I need to have a good overview of all my current todos. Sadly, I could not find any good program that would meet my expectations. What I want is a program that I can model todos out of different areas of my live with. The program should have the ability to attach text, images, checklists, and other kind of additional information to each task, create subtasks and model dependencies between tasks, i.e. task n can only be done when task n-1 is done, or as soon as task x is completed, remind me to do task x+1.

Angular error input field

I am working on an Angular application and try to acces a value of an input field. I receive following error: "Can't bind to 'ngModel' since it isn't a known property of 'input'" Can anybody help me out?

Accessible Websites

According to the web accessibility act (“Web-Zugänglichkeits-Gesetz” – WZG) of the Austrian government, the websites of all the institutions that are funded by the government, as is TU Wien, have to be accessible according to the Web Content Accessibility Guidelines (WCAG). While the technical aspects are almost done, most of the editors have done nothing to make their areas accessible.

Repeatedly forgot to mention issue number of ticket in commit message

I repeatedly forgot to mention the ticket number of the corresponding gitlab issue in my commit messages. This is a Problem because it makes a tracing of the issues impossible.

Efficient and user-friendly email entry field

I am working with React and want a system that allows users to enter multiple emails without too much overhead. The system should create new textboxes automatically as old ones are filled in, and delete text boxes in case they are empty. The users should also be able to paste a list of emails into a textbox, which would be properly parsed and split into multiple textboxes. Additionally, the entered addresses should be verified to make sure that they are valid on the client-side. What would be the best design for such a system?

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