Create Your First Microflow: Hello World!

Last update: Edit

1 Introduction

Mendix uses visual models called microflows to define the logic of your application. Microflows are visual ways of expressing what traditionally would be written in code. This how-to explains how you can create a very simple “Hello World” microflow.

This how-to will teach you how to do the following:

  • Create a menu item
  • Create and edit a microflow

2 Creating a Menu Item

Microflows can be triggered in many different ways (for details, see Trigger Logic Using Microflows). For this how-to, you’ll be using a menu item to trigger the new microflow.

To create a menu item, follow these steps:

  1. Open the Navigation editor, add a menu item in the desktop navigation settings, and enter the caption of Hello World:

  2. Click Select… in the Target section of the New Menu Item dialog box to open the Select Navigation Target pop-up window:

  3. For On click, select Call a microflow:

  4. In the Select Microflow dialog box, select a microflow and then click New:

  5. Enter HelloWorld for the Name of the new microflow.

  6. Save the new menu item by clicking OK.

3 Editing the New Microflow

To edit the new microflow, follow these steps:

  1. Open the new microflow by right-clicking the new menu item created in 2 Creating a Menu Item and selecting Go to target from the context menu:

    You will see an empty microflow like this:

  2. Open the Toolbox in the bottom-right corner of Studio Pro:

  3. Drag a Show message action from the Toolbox to the line between the green start even and red end event, which will insert a show message activity:

  4. Double-click the message activity to open the Show Message properties editor.

  5. Enter Hello World for the Template value and click OK:

  6. Click Run Locally and then View to see the application in your default browser.

  7. Locate the new navigation item in the menu bar and click it to see the message.

4 Read More