Get Started with Web IDE


Rell Web IDE is available at

Upon entering, you will see an interface similar to the image below.

Click Create Module button:

Where to create a new module

This will open a modal element where you can specify the name of the Module and the Language used (in this example: Rell).

For convenience you can include template and test code.

Create Module options window

Click the blue “Create” button. The screen will now be filled with code.

The IDE with a template

To the left bar is the Browser. You can use it to work with several examples.
Inside the central element on the right the editor filled with a template of source code.
On top of the Editor there is a button to “Start Node” (the green “Play” icon), don’t press that one yet. There is also a button “Run tests” (the gray “bug” icon).

Hello World!

As a minimal first application, you can make a Hello World example with a focus on Ukraine.

If you checked the use template box and look at editor section on the top, you will see this code as a template:

entity city { key name; }

operation insert_city (name) {
    create city (name);

This is a small registry of cities.

Don’t worry about the detail of this code yet, we will come to them in a bit. For now, let’s confirm that our code template is working properly.

In order to run the code we need a test in javascript. If you switch to the Hello.js test file, you will see it’s filled with some test written in javascript:

const tx = gtx.newTransaction([user.pubKey]);

tx.addOperation('insert_city', "Kiev");

tx.sign(user.privKey, user.pubKey);

return tx.postAndWaitConfirmation();

Click the ‘Run tests’ button, and a green message will appear.

The IDE shows Run Succesfully

Congratulations! After all this work, we suggest that you put “Relational Blockchain” on your CV.

Where to go next?

Next step is to learn about what the Rell code actually means in the Rell Basics section.

But if you prefer learning by example, you can choose to start with one of our Example Projects instead.