December 3, 2018

Nested Forms in Angular

This Article is based on Kara Ericksons talk about “Angular Forms” at the Angular Connect 2017. I am going to give you a quick example to get started with nested Forms. TL;DR Extract the HTML in new ComponentInject ControlContainer in new ComponentAccess the Form via ControlContainer.controlpass the parent Form into the nested Component with the […]
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Frederik von Berg
Developer at thecodecampus </>


December 2, 2018

Building Flutter on Gitlab – Flutter Android Image

When it came to building a Flutter MVP application, I was very dissatisfied with the existing Flutter Images. They were outdated by many many versions. Therefore I created an image reflecting the current version of Flutter. The source is on Github, you can find the Image ‘kattwinkel/flutter-android’ on Docker Hub. A minimal .gitlab-ci.yml file might just […]
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Can Kattwinkel
Developer at thecodecampus </>


Material 2: Sticky Footer with Mat Sidenav

My guess is your using Angular in combination with Angular Material and you desperately need a sticky footer, ideally, in a variable height. No need to look any further. This article will provide you with a basic solution for given circumstances. This article was updated and tested for Angular 7 and Material 2 Version 7.1.1 […]
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Christian Heitmann
Developer at thecodecampus </>


November 27, 2018

Virtual Scrolling in Angular 7

The release of Angular 7 includes a feature that can improve the performance of your application dramatically. Virtual scrolling is highly beneficial when your app has to deal with a lot of data that has to be displayed in tables or lists. Virtual Scrolling I could explain what virtual scrolling is, but I couldn’t do […]
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Kai Henzler
Developer at thecodecampus </>


November 21, 2018

Call a method on @Input() change

Problem You probably already run into this issue. Inside a component, you want to react to the change of an @Input() value e.g. by calling a method of your component. For example we have get an @Input() filter: string from our parent component and if the @Input() changes, we want to update our data in […]
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Frederik von Berg
Developer at thecodecampus </>


November 20, 2018

Building an Angular App in parallel for multiple languages

Problem When using the built-in Angular Internationalization (i18n) the Angular guide tells you in detail what you have to do to set up your application to support multiple languages. The guide lacks the details on how to properly integrate the build into a common web application deployment workflow. In this brief blog post I’m going to […]
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Kai Henzler
Developer at thecodecampus </>


October 27, 2018

Install Docker on Ubuntu 18.10

Currently there is no official release of Docker available for Ubuntu 18.10. Therefore you’ll run into errors like this one: 

But there is already a way to utilize the test repo to have Docker for Ubuntu 18.10:

Before you apply this fix, please check if the official resources have been updated at: https://docs.docker.com/install/linux/docker-ce/ubuntu/

Can Kattwinkel
Developer at thecodecampus </>


October 5, 2018

Angular 2 – Set Class of parent element with @HostBindings

With the @HostBinding() annotation, Angular gives you a useful tool to handle manipulations of css classes of parent Elements. The advantage is quite clear, the required logic remains in the components class and is not set in the template file. This makes it easier to test and improves the readability of the template file. In […]
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Can Kattwinkel
Developer at thecodecampus </>


July 26, 2018

Locally serving the build distribution of an Angular SPA

tl;dr Use Node Package local-web-server and its command ws with the spa flag like this: ws --spa index.html While developing an Angular based SPA usually you will use the Angular CLI as build too. The CLI has an integrated development server which is able to handle client-side routing. So whenever a reload happens and you’re […]
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Philipp Burgmer
Developer at thecodecampus </>


July 18, 2018

Angular, Preserving Query Params and Google AdWords

… and how all this leads to an incorrect source of traffic in Google Analytics and incorrect conversion attribution.   The situation is as follows: On www.thecodecampus.de we run an Angular 6 page. We advertise our product with Google AdWords. If a visitor comes via Google AdWords, the URL is appended with a glcid and several […]
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Can Kattwinkel
Developer at thecodecampus </>