Upgrade from Contao 2 > 3

[punkstjimmy]

Hi,

I'm just wondering has anybody successfully upgraded a Contao 2 site up to Contao 3?

I've tried this a couple of times now and both times the sites have broken. We're looking to upgrade a few of our client's site before the end of the year, some of them with a lot of content so we don't really want to start from scratch.

At the moment I'm trying to upgrade a site from 2.10.2 to 3.1.3. The last step on the upgrade never completed, I think it was something like 'Restore DB'. Now in the frontend I just have a blank page, no PHP or server errors.

If anyone has any tips or experience with an upgrade from 2 to 3 I would be interested to hear how it went and what you did, if anything, to get it working.

Thanks,
Jamie

[Andreas]

I've done several updates from 2.11 to 3.1. Are you working with the live update or manualy?

If you wish I could try an update of your page in a mirror and write down the required steps. As I saw there seems to be no update instructions for english user. Here's the manual for germans https://contao.org/de/news/update-auf-contao-3.html

Some hints:
check that required extension are compatible
some not compatible extension may run after you do the autoload-creator you find in BE
don't rename tl_files to files till the end.
After the update use this script, to change file pathes in the DB https://gist.github.com/leofeyer/3304014

put this into localconfig.php

$GLOBALS['TL_CONFIG']['bypassCache'] = true;
$GLOBALS['TL_CONFIG']['coreOnlyMode'] = true;
$GLOBALS['TL_CONFIG']['displayErrors'] = true;

Put a .skip file in extension folders you like to deactivate

[markclaus]

I'm just about to go through this myself and so i understand that making sure you've prepared everything before hand is going to be extremely important.

Now, I will preform the update manually. My thinking is that i will remove the old website and delete the old database from the server. Then upload the localhost version (that i have tested to death) to the server, create a new database on the server, run the contao nstall tool to connect to the database and create the tables and create a new admin account.

Then, sync the live version with my localhost version for future updates.

Am i missing something here that could cause me problems? For instance, when running the install.php tool my thinking is that all information will have to be created afresh.


Cheers

[jimmy2]

I've done several updates from 2.11 to 3.1. Are you working with the live update or manualy?

If you wish I could try an update of your page in a mirror and write down the required steps. As I saw there seems to be no update instructions for english user. Here's the manual for germans https://contao.org/de/news/update-auf-contao-3.html

Some hints:
check that required extension are compatible
some not compatible extension may run after you do the autoload-creator you find in BE
don't rename tl_files to files till the end.
After the update use this script, to change file pathes in the DB https://gist.github.com/leofeyer/3304014

put this into localconfig.php

$GLOBALS['TL_CONFIG']['bypassCache'] = true;
$GLOBALS['TL_CONFIG']['coreOnlyMode'] = true;
$GLOBALS['TL_CONFIG']['displayErrors'] = true;

Put a .skip file in extension folders you like to deactivate

why is the german manual so short?
i'mt trying to figure out how should i use the "update database" buttons in the installation tool...

[Andreas]

why is the german manual so short?
i'mt trying to figure out how should i use the "update database" buttons in the installation tool...

So short: Because it is not so hard if you know what to do.
"update database" buttons: ??? Mouse click on it?

[jimmy2]

So short: Because it is not so hard if you know what to do.
"update database" buttons: ??? Mouse click on it?

i did click on them, but the page just kept loading without doing anything, until i selected the drop tables first.
the upgrade failed tho, because i was not able to insert new news articles anymore... (on localhost, dunno if i can use a live server for another try)

edit*
how long does it usually take after i press the "update database" button for the "alter tables options" ?

[Andreas]

Maybe 5 to 30 seconds.

Maybe tomorow I can help you with a skype session it's 2:18 pm here.

[xchs]

how long does it usually take after i press the "update database" button for the "alter tables options" ?

If the server limits (max execution time and memory limit) are quite limited it might be a good idea to run the migration step by step (i.e. not all SQL statements at once).

[jimmy2]

i think it got hung up on the huge search-index (about 6 million entries....). after i cleaned that up, it started to do stuff extremely fast... wonder why was so big index needed anyway?