Can we export the code of application in Go?

YogiYang

Hello,

The subject says it all.

Can R3 be configured to export the whole application in Go?

TIA

Yogi Yang

gabriel

I do not understand your question unfortunately.

The way we export/transfer applications is via the web interface. You create your app and then export it as a *.rei3 file; this file can then be imported in other REI3 systems either directly or via repository. This is the "whole" application as REI3 understands it. And you can package and even sell this application if you want, to anyone who runs a REI3 system.

Go is the language the server is written in. A complete REI3 instance needs much more than Go however. It requires the server (written in Go), the frontend components (web files), a database (Postgres) as well as external dependencies (ImageMagick, Ghostscript, ...). You could design your app in a specific REI3 system and then package everything together (database, server, dependencies) and ship this as a software solution; this is how the portable version of REI3 works. It would be possible to do on Windows at least but what would be the benefit?

Please let me know what you meant, because it is not very clear to me.

YogiYang

Hello,

Thanks for your detailed reply. You have answered my query!

gabriel And you can package and even sell this application if you want, to anyone who runs a REI3 system.
This reply implies that the user has to have REI3 to use and application created in REI3.

By code export I mean get REI3 to generate code of the application created in it so that users can take the code and run it on any PC or cloud infrastructure they want. Of course for running the app users will have to setup a few dependencies.

As you have mentioned in your reply.

gabriel It requires the server (written in Go), the frontend components (web files), a database (Postgres) as well as external dependencies (ImageMagick, Ghostscript, ...).

Actually I personally prefer to use Caddy for running Go web apps. Because I find it robust and after having tested it under heavy load I have fallen in love with Caddy.

gabriel You could design your app in a specific REI3 system and then package everything together (database, server, dependencies) and ship this as a software solution; this is how the portable version of REI3 works.
Thanks for pointing this out.

One last question.
In the documentation, I read that when a user imports a REI3 app (*.rei3) it will replace older app and also the data structure thus wiping out all the data.

Does this mean that I cannot provide my users incremental updates in the application?

TIA

Yogi Yang

gabriel

YogiYang In the documentation, I read that when a user imports a REI3 app (*.rei3) it will replace older app and also the data structure thus wiping out all the data.

This is a misunderstanding. REI3 apps can be updated without risk - we have done thousands of updates over the years. The only way you loose data is if you remove data structures inside your app (relations/attributes); then when you update your app (with a *.rei3 file) inside another REI3 system, the same structures are removed and this deletes the data as well.

I assume the misunderstanding comes from the warning that you get when you make changes to apps from other authors. When you disable the readonly mode for apps from other authors, it will warn you that your changes will be overwritten, when a new version of the app is installed. This is by design and you should not make changes to apps from others unless you actually try to fork them. You can however safely build-on other apps.

mybuddha

Hi,
Is it possible to export the application/Code so that it can run on Client server without R3 setup?

-thanks
Rahul Gautam

gabriel

Hello Rahul,

Welcome to the forum! 🙂

It depends on what you mean. REI3 applications can be freely exported from one REI3 instance & imported into another - but you will need a REI3 system running somewhere.

You could host a REI3 instance for your clients in the cloud for example - then clients could connect without any setup. Or clients could host/run their own REI3 system, if they prefer this model.

Best regards,

Gabriel