Product

ORDA: Breaking news for entity selection methods

Automatically translated from English

When it comes to ORDA, 4D v18 R3 is full of good news! New member methods are at your disposal to further enhance your coding experience.

For starters, extracting data from an entity selection has been greatly enriched allowing you to build a fully customized collection with your entity selection data.

In addition, we’re providing you a way to indicate to an entity selection that its data needs to be refreshed from the server immediately, invalidating cached data.

Interested in some details? Keep reading, everything you need to know is below. 

Product

An intro to object-oriented programming in 4D: Classes

Automatically translated from English

Many of you have have been asking to be able to define an object type ever since the Object type became available. Thanks to object notation, many of you dream of having object functions.  Dream no more and say hello to classes in 4D v18 R3 project database! In this blog post, we’re introducing one of the most interesting concepts of object-oriented programming … along with a database example and a bonus video!

Tips

A better understanding of 4D REST sessions

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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.

Tips

Test the powerful 4D REST server with Postman

Automatically translated from English

4D provides a powerful REST server, that enables direct access to data stored in your 4D databases. This makes it possible, for example, to build an API to use with a modern front end technology (e.g., Angular, React, etc). In this blog post, we’ll provide a first introduction to the 4D robust REST server. You’ll see how to configure it as well as test the create, retrieve, update, and delete (CRUD) operations using the API testing tool, Postman.

Product

A new tool to easily build Entity Selection list boxes

Automatically translated from English

To display a list of records, an entity selection list box is the most suitable when using ORDA technology. 4D v18 R2 simplifies your life with a new tool to easily build entity selection list boxes: List box builder. What is it? It’s a simple dialog where you can set up your list box in a few quick steps (select the table and fields to display, enter column titles, and define the column order). 

Tips

Project databases: Git. Commit. Pull. Push & more

Automatically translated from English

In a previous blog post, we introduced you to Git (a version control system) and Github (a cloud-based hosting service) and how you can share your 4D code with other developers. In this blog post, we’ll go a bit further by exploring some scenarios a developer may encounter, such as cloning a remote repository, ignoring already committed files, and solving merge conflicts.

Guest Post

List box typeahead: Intuitive list searching

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by guest author Chris Belanger, a 4D developer from Canada

List box typeahead (a method for progressively searching) is not a native feature of list boxes. However, you can easily implement this feature with some creative coding. In this blog post, I’ll demonstrate the technique along with a database example and an exhaustive document explaining the details step by step.

The final result is summarized in the GIF below, It illustrates two “searches”. One for E-L-L-I-O-T, then another (after a column sort) for H-A-N-N-A-H: