Making Client/Server workers work – John Baughman

Posted on November 5, 2017 by 4DMethod

November 15th, 2017, 12:00 PM, CST (UTC−6:00)
116 S. Michigan Ave., Chicago IL 3rd floor
Please RSVP if attending in person

Special Topic:
Making Client/Server Workers Work: A real world example using CALL WORKER & CALL FORM

John Baughman from BY’te DESIGN in Hawaii will present a strategy where 4D forms can subscribe to a worker process to monitor when tables are modified. Each table’s trigger reports to the worker any time it fires. The worker in turn passes the trigger’s report on to all the subscribers monitoring the table. The approach works client/server or standalone and is written in 4D v16 R4 using dot notation.

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Code Coverage Component for 4D – Dani Beaubien

Posted on September 20, 2017 by 4DMethod

October 4th, 2017, 12:00 PM, CDT (UTC−5:00)
116 S. Michigan Ave., Chicago IL 3rd floor
Please RSVP if attending in person

Special Topic:
Code Coverage Component, Dani Beaubien

Dani Beaubien from Open Road Development will demo his new Code Coverage 4D v16 Component that can be used by 4D developers to gain a deeper understanding of what code is actually executed while testing. The component is able to track the specific lines of code that are executed and provide a summary window providing various statistics as well as the ability to go into each method and view the lines that were executed, or more importantly those that were not.
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Happy 5th Birthday, 4DMethod!!!

Posted on September 18, 2017 by 4DMethod

Five years ago today, we had our first user group meeting under the name  Midwest 4D and Wakanda User Group.  It has been a really exciting transition to what we have now, a global user group where we have participation from all reaches of the globe!  Thanks again to the last 26 presenters at 4DMethod meetings for putting in the  extra effort to share your time, your experience, and especially your code with us.

I am looking forward to growing the group in coming years and continuing to deliver valuable discussion and insight into 4D and Wakanda development.  I hope you’ll consider contributing to the group by doing a presentation yourself or becoming a 4DMethod Patron!  Regardless, here’s to another great 5 years with you all in the 4DMethod user group 🙂

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Worker Job Monitor

Posted on September 1, 2017 by 4DMethod

A basic strategy for monitoring worker activity or for creating a job queue using Call Worker and Call Form…

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A Publish/Subscribe Component for 4D – David Adams

Posted on August 17, 2017 by 4DMethod

August 30th, 2017, 6:00 PM, CDT (UTC−5:00)
116 S. Michigan Ave., Chicago IL 3rd floor
Please RSVP if attending in person

Special Topic:
A Publish/Subscribe Component for 4D, David Adams
David Adams demonstrates a component, with source, that implements a “publish/subscribe” messaging system on top of CALL FORM and CALL WORKER.  There are a ton of uses for this sort of system, and it is also a very different way of thinking about structuring your code and objects.  With the infrastructure in place, it’s very, very easy to extend and reuse interface elements, even complex ones, without a lot of code or new bugs.  All of this works within one process with one window, one process with multiple windows, or even multiple processes. Continue reading →

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4D ACME Client – A Lets Encrypt client in native 4D code – Tim Penner

Posted on June 26, 2017 by 4DMethod

July 12th, 2017, 12:00 noon, CDT (UTC−5:00)
116 S. Michigan Ave., Chicago IL 3rd floor
Please RSVP if attending in person

Special Topic:
4D ACME Client – A Lets Encrypt client in native 4D code, Tim Penner
It is becoming increasingly important to use encrypted channels for web communications (HTTPS). Sure you can always make a self-signed certificate that lasts 10 years but then your site visitors are prompted with a not-so-friendly warning when they visit your website. It is advised to use a signed certificate from a credible certificate authority. But, then it can become an administrative task to keep the SSL certificate up to date, not to mention the additional cost.

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CITI Lite – Going 4D Mobile at the Art Institute of Chicago – Xiang Liu and Brent Raymond

Posted on May 11, 2017 by 4DMethod

May 24th, 2017, 12:00 noon, CDT (UTC−5:00)
116 S. Michigan Ave., Chicago IL 3rd floor
Please RSVP if attending in person

Special Topic:
CITI Lite – Going 4D Mobile at the Art Institute of Chicago, Xiang Liu and Brent Raymond
Take a look at the CITI Lite web application from the Art Institute of Chicago and 4D Professional Services. We will review the approach from an architecture/ engineering perspective starting with creating an API for a legacy 4D client/ server application using 4D Mobile and ending with deployment of a modern Wakanda based web application written in Angular.

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Simple Code Execution Dialog

Posted on May 8, 2017 by 4DMethod

How to create a very simple code execution dialog in 4D.
Warning! Be sure to understand the security implications of allowing such functionality!

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WebFileManager4D – A new remote file management code library – Tom DeMeo

Posted on April 2, 2017 by 4DMethod

April 12th, 2017, 12:00 noon, CDT (UTC−5:00)
116 S. Michigan Ave., Chicago IL 3rd floor
Please RSVP if attending in person

Special Topic:
WebFileManager4D – A new remote file management code library, Tom DeMeo, Waltham Software

A lot of 4D applications build in the functionality to interact with and manage external documents and files which are kept on the server. Providing a quality interface to do this can be surprisingly difficult and time consuming. WebFileManager4D is a code library that can be installed and configured in minutes, and can provide a clean, familiar file explorer type interface for managing documents.

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Building services with 4D Mobile – Alex Heilmann

Posted on February 16, 2017 by 4DMethod

March 1st, 2017, 12:00 noon, CST (UTC−6:00)
116 S. Michigan Ave., Chicago IL 3rd floor
Please RSVP if attending in person

Special Topic:
Building services with 4D Mobile, Alex Heilmann, Edinburgh Bicycle Cooperative

Rightly enough, Wakanda is usually marketed as an “app factory”, bundled as a full stack framework in order to develop web applications.  But if you single out the Wakanda server from that bundle and look at its extensive API, you can start seeing Wakanda as a “services factory”.
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