Trying to use any drush command I get an error saying autoload.php won't load. It's in the vendor folder which is in the web root where I'm pretty sure it's supposed to be. It also has chmod +x permissions. If I put in php composer.phar I get the version and all that so yes it is there. If I run composer drupal-update (which composer manager would like for me to do) bash says composer: command not found. Is composer the only way to do this library thing in drupal 8? It seems a lot more problematic and less user friendly than just putting a library directory in the sites folder.

  • I think that a common use case is to install drush outside of the Drupal webroot (for instance in ~/ or globally). – mradcliffe Mar 28 '16 at 17:39

If you are getting the error -bash: composer: command not found, that means Composer is not in the PATH Bash is using.

To use the Composer Manager module, you don't necessarily need Drush. I use it without Drush, but I run the following commands after I install the module.

cd <root directory of Drupal 8>
php modules/composer_manager/scripts/init.php

If all works fine, you will see the following output:

Composer Manager has been successfully initialized.

In this way, the Composer Manager module adds a new command inside the composer.json file used by Drupal. In fact, after running those command, you will notice the following lines inside the composer.json file.

"drupal-rebuild": "Drupal\\composer_manager\\Composer\\Command::rebuild",
"drupal-update": "Drupal\\composer_manager\\Composer\\Command::update"

In the case you didn't execute those commands, or they failed for any reason, running composer drupal-update would return the following error:

Command "drupal-update" is not defined.


If you are downloading modules using Drush, just do as you normally do. The Composer Manager module will hook into Drush and do its task when a new module is downloaded.

  • well I actually already did that but ok I'll do it again. Yeah, same thing. it says composer manager has been successfully initialized but then when i run composer drupal-update it still says -bash: composer: command not found. – Ed523 Mar 29 '16 at 16:40
  • Are you sure composer is in the bash PATH? – kiamlaluno Mar 29 '16 at 18:48
  • 1
    Composer is definitely not installed. Refer to the instructions at getcomposer.org/doc/00-intro.md#installation-linux-unix-osx. – Bojan Zivanovic Mar 29 '16 at 23:19
  • After running php modules/composer_manager/scripts/init.php I had to run composer update before running composer drupal-update. If I skipped the second step, I got the Symfony error reported by kiamlaluno. – foray Jul 15 '16 at 0:34

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