A few days ago, we embarked on the process of tidying up a particularly complex piece of code. It involved moving typical frontend code to the backend, as it was becoming too cumbersome and we felt more secure writing it in F# in the backend. (more on that in another blog post) After much of it was rewritten, we ran into a pattern matching construct that threatened to contain a lot of code duplication. To increase readability, we wanted to use an Active Pattern. The problem was that the...
In June 2019, Microsoft introduced System.Text.Json as a feature of .NET (core) 3.0 to the public. The reason they gave for creating this new namespace was that they were unhappy with the old built-in solution for serializing / deserializing JSON. The poor built-in capabilities to work with JSONs –of course- was the reason for James Newton-King to create Json.Net (for many of us just called Newtonsoft, which actually is his company and not the name of the library). Newtonsoft’s Json.Net...
Today I learned something insanely useful for working with ngForm in Angular:ControlContainer!
A couple of weeks ago, one of my colleagues was tasked with implementing multiple customizable reports for our software. So, he did some research and found ActiveReportsJS by Grapecity. It allows us to create templates for reports, which could then be edited by our users to fully customize the appearance of those reports. Not only that, but it allows for PDF previewing on the one hand and headless exporting the PDFs on the other. To my surprise, the PDF rendering takes place in the...
This is part 3 of my series about Angular components.If you haven’t already, check out part 1 (one-way and two-way binding) and part 2 (ngModel) to see how and why to write an Angular component following the ngModel pattern.
Our goal for this part of the series is to learn how to validate your angular component’s user inputs to disable the submit of a form surrounding our form-control.
In my last article, I’ve explained how to use @Input() and @Output() and how to combine them to offer two-way binding for your component. This time I want to take this component to behave like a proper control within a <form>-element that is using ngForm. What’s ngModel, and why should I use it? In a typical Angular application, we often encounter scenarios where we have to handle forms with various input controls and a button to send data or perform some sort of action. The...
In this short blog series, I want to show how to create an Angular component that can be used for user inputs. I know this is a topic for which many articles have been published. But while there are great tutorials that explain how it’s done, many of them lack the answer to the question of why. This is the reason I’m describing in this series how and why we are writing our components the way we do here at TimeRocket. This will be a 5-part series on the topic, so bear with me if the...