Symfony 1.4: Override doctrine:build-schema command - doctrine

Question

Is it possible to override a Symfony 1.4 CLI command?
More specifically, I was wondering if it's possible to override this command:
php symfony doctrine:build-schema
What I want to do is to add a new option in the database.yml file for each connection I find in it.
The option I want to add is a package option
So, an hypothetical connection could be:
all:
doctrine:
class: sfDoctrineDatabase
package: myPackageOption
param:
dsn: 'mysql:host=localhost;dbname=my_db_name'
username: db_user
password: db_password
If it would be possible, where can i find the code to override?

Answer 1

I suggest you to use some shell script that pre-generate the databses.yml and then auto-invoque the php symfony doctrine:build-schema. Something like:
build.sh, in project root folder:
#!/bin/bash
cp config/databases_1.yml config/databases.yml
php symfony doctrine:build
then, type ./build.sh (after added execution permissions) in your console.
The copy/replace of multiple databases_xxx.yml it's the easiest example. But you can do any processing you want.
If you don't know about shell scripting, you can do the file modification even with a php script, so your build.sh should looks like:
#!/bin/bash
php pregenerate_databases.php
php symfony doctrine:build

Answer 2

I'm trying to override the task but I can't make it work, but:
You can create your own task that inherits the doctrine task and do your stuff:
in lib/task add sfDoctrineBuildSchemaCustomTask.class.php:
class sfDoctrineBuildSchemaCustomTask extends sfDoctrineBuildSchemaTask
{
/**
* #see sfTask
*/
protected function configure()
{
$this->addOptions(array(
new sfCommandOption('application', null, sfCommandOption::PARAMETER_OPTIONAL, 'The application name', true),
new sfCommandOption('env', null, sfCommandOption::PARAMETER_REQUIRED, 'The environment', 'dev'),
));
$this->namespace = 'doctrine';
$this->name = 'build-schema-custom';
$this->briefDescription = 'Creates a schema from an existing database';
$this->detailedDescription = <<<EOF
The [doctrine:build-schema|INFO] task introspects a database to create a schema:
[./symfony doctrine:build-schema|INFO]
The task creates a yml file in [config/doctrine|COMMENT]
EOF;
}
/**
* #see sfTask
*/
protected function execute($arguments = array(), $options = array())
{
// do your stuff before original call
parent::execute($arguments,$options);
// do your stuff after original call
}
}
Then, you can call php symfony doctrine:build-schema-custom, and go!
Or, maybe, you can edit the original task located in lib/vendor/symfony/lib/plugins/sfDoctrinePlugin/lib/task/sfDoctrineBuildSchemaTask.class.php