Upgrade path from version 3.5.x to latest stable 4.x

Hello,

I'm trying to find a way to upgrade my current Contao instance (version 3.5.28) to current latest stable version 4.4.7.

As I can't find anything in the documentation, I'm asking help here ;)

Regards

Davide

Try the videos on youtube by contao academy https://www.youtube.com/channel/UCw6...9cBPn1WbHF9niQ

And here https://www.youtube.com/watch?v=rwC8xfdO3Ao somewhere in the middle Leo Feyer shows how easy it is to go from 3.5 to 4.

1. Go to System, Maintenance, and do a great purge job.
2. Then make a copy of your DB.
3. Do a clean installation of Contao 4 in a new folder with a new [sub]domain.
4. When you come to the install tool where you have to enter the credentials of your DB. Type in the values of the copy of your DB.
5. Contao locates the DB as DB from 3.5 and asks you if you want to migrate to Contao 4.

Quote:

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Originally Posted by Andreas

Try the videos on youtube by contao academy https://www.youtube.com/channel/UCw6...9cBPn1WbHF9niQ

And here https://www.youtube.com/watch?v=rwC8xfdO3Ao somewhere in the middle Leo Feyer shows how easy it is to go from 3.5 to 4.

1. Go to System, Maintenance, and do a great purge job.
2. Then make a copy of your DB.
3. Do a clean installation of Contao 4 in a new folder with a new [sub]domain.
4. When you come to the install tool where you have to enter the credentials of your DB. Type in the values of the copy of your DB.
5. Contao locates the DB as DB from 3.5 and asks you if you want to migrate to Contao 4.

---

Thanks a million for the infos.
I'll have a try soon and let you know if I have a problem.

Regards

Hi,

I've been able to upgrade a copy of my Contao 3.5.28 instance up to 4.4.7.
I needed to copy my templates and pictures.

The upgrade is now completed but I'm struggling with installing extensions I had in the old version with 4.4.7.

I don't even see the extensions catalog / extensions manager in the left menu.
I guess something changed in the way we install extensions in Contao 4.x.

Question: How can I install extensions in Contao 4.4.7 ?

Thanks for your help

Yes, there's no extension management in BE anymore. If you've installed with the contao-manager, you can install extensions with example.org/contao-manager.phar.php as you can see in one of the videos. You also can install extensions on the SSH console directly as shown in some videos.

Management of Contao core and extensions is taken by the composer software. Even if you use contao-manager.phar.php, in background runs composer on shell. Take a look into your composer.json in install directory (above web/). There you find the instructions for composer what has to be installed and to keep up to date.

Code:

---

...
"require": {
    "php": "^5.6|^7.0",
    "contao/manager-bundle": "4.4.*",
    "contao/calendar-bundle": "^4.4",
    "contao/comments-bundle": "^4.4",
    "contao/faq-bundle": "^4.4",
    "contao/listing-bundle": "^4.4",
    "contao/news-bundle": "^4.4",
    "contao/newsletter-bundle": "^4.4",
    "delahaye/dlh_googlemaps": "^2.3",
    "madeyourday/contao-rocksolid-frontend-helper": "^2.0",
    "terminal42/contao-easy_themes": "^2.2"
},
...

---

If one of those bundles needs another bundle, the dependencies get resolved by composer automaticaly in background and composer also installs this dependencies. Although you can not see this dependencies below "require".

You only can install extension this way, when they are compatible to Contao 4. You have to install C 3.5 extensions manually.