In a previous blog post, we showed you how to get started with the 4D REST server. We walked you through different CRUD operations using Postman and pointed you to the full REST documentation. In this blog post, We’ll explain how sessions work in 4D. This understanding will ensure that you’ll be able to build a session-based authentication system using the 4D REST server.
Want to retrieve data that isn’t available via REST or Web Services? What if it’s only available on a website? The data is easy enough for a human to read, but reading HTML data with a programming language isn’t so simple. Some developers try to use Position and Substring, others try Regex, but it’s unpleasant and time-consuming. A very different approach is to convert the HTML into an object and get the data via object notation. Table rows are handled as collections and are easy to loop through!
This blog post describes how to use this approach and provides some handy tips.
Our most spectacular major release yet is now available! 4D v18 is bursting with advanced functionalities, upgrades, and enhancements.
This cutting-edge release opens a lot of possibilities for your 4D-based applications. Though by no means exhaustive, here’s a list of features we’ve got in store for you:
- Project database for version control: A solution for collaborative programming, enabling you to store your code in plain text files within a source control system (e.g., Github, Perforce, etc.).
- Encryption: Built-in data encryption tools on a per-table basis. Whether via the UI or programming, your application’s protection is at its finest.
- 4D for iOS: A product fully integrated into 4D to easily extend your business applications to mobile.
- ORDA: Optimized performance, extra commands, and remote datastore.
- The 4D language: Staying compatible with the classic language, the 4D language is making great strides towards becoming object-oriented with member methods to access files (or folders, zip archives, or emails), the ability to build your own member functions and use the new formula object, enhanced debugging features, etc.
- 4D Write Pro: Style sheets, a feature-rich toolbar, more table-related features, and the list goes on.
- 4D View Pro: A powerful ribbon toolbar, .xlsx import/export, more commands to handle your documents by programming, and much more.
This list is far from exhaustive, see all the blog posts for 4D v18!
With the introduction of project databases, we’ve also modified the interface of some 4D dialogs. In this blog post, we’ll present some of the changes we’ve made to the form editor.
According to the top 10 blog posts of 2019, the Formula: More power behind simplicity post ranked quite high … in the top five. It seems that Formula really grabbed your attention, so here’s another tip that Vincent de Lachaux (developer and 4D expert) has shown me and I’m sharing with you!
As you know, 4D now supports two ways to work with sources: binary and project databases. Binary databases are the 4D we all know and love, with source code in a binary file to allow team development with 4D Server, and all of the design elements (methods, forms, structure, etc.) gathered in a single, compact binary file, the “.4db” file. Project databases make it easier for distributed teams to work collaboratively by storing the source code in a source control system in separate, plain text files. Projects will not replace the 4DB, we have no plans to make the 4DB disappear. It’s about two different ways of working and developing. It’s up to you to choose what best suits your needs. Here’s a blog post to help you decide:
A very detailed blog post has been published on Users and Groups in project databases. In this post, we’re providing a video about the key points to remember.
So you’ve been testing out project databases … maybe you’ve created one or perhaps you’ve converted an existing binary application. Now, it’s time for us to show you how to use Git (the revision control system) with Github as the hosting service for your 4D application.
Since the delivery of 4D v18, a series of blog posts on how to convert and develop with project databases have been published. What about components? This blog post answers that question.
PROCESS 4D TAGS has been enhanced with each 4D version and the latest additions as 4DCODE have drastically increased the use cases. What was previously a single line of code, is now often many lines, even pages, of 4D code.
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