How to modify composer.json for installing Gedmo Doctrine2 extensions in Symfony2 - json

Question

I'm trying to install to install the Gedmo Doctrine2 extensions in Symfony2 to use the translate composante.
I found a page online that show me how to do it (https://github.com/l3pp4rd/DoctrineExtensions/blob/master/doc/symfony2.md), but I'm not shure about a few things.
First, when I change the composer.json file, I noticed that I have
"psr-0": {
"": "src/",
"SymfonyStandard": "app/"
}
And the instruction tells me to add
"psr-0": {
"Acme": "src/"
}
I don't know if I need to change the "": "src/", ligne or if I add the new ligne, or if I just let it be like it is.
I would really help me if someone juste tell what my file should looks like, so here is my composer.json:
{
"name": "symfony/framework-standard-edition",
"license": "MIT",
"type": "project",
"description": "The \"Symfony Standard Edition\" distribution",
"autoload": {
"psr-0": {
"": "src/",
"SymfonyStandard": "app/"
}
},
"require": {
"php": ">=5.3.3",
"symfony/symfony": "2.6.*",
"doctrine/orm": "~2.2,>=2.2.3,<2.5",
"doctrine/dbal": "<2.5",
"doctrine/doctrine-bundle": "~1.2",
"twig/extensions": "~1.0",
"symfony/assetic-bundle": "~2.3",
"symfony/swiftmailer-bundle": "~2.3",
"symfony/monolog-bundle": "~2.4",
"sensio/distribution-bundle": "~3.0,>=3.0.12",
"sensio/framework-extra-bundle": "~3.0,>=3.0.2",
"sensio/generator-bundle": "2.0.*",
"jms/security-extra-bundle": "1.0.*",
"gedmo/doctrine-extensions": "dev-master",
"incenteev/composer-parameter-handler": "~2.0",
"ircmaxell/password-compat": "^1.0"
},
"require-dev": {
"sensio/generator-bundle": "~2.3"
},
"scripts": {
"post-root-package-install": [
"SymfonyStandard\\Composer::hookRootPackageInstall"
],
"post-install-cmd": [
"Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::removeSymfonyStandardFiles",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
],
"post-update-cmd": [
"Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::removeSymfonyStandardFiles",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
]
},
"config": {
"bin-dir": "bin"
},
"extra": {
"symfony-app-dir": "app",
"symfony-web-dir": "web",
"symfony-assets-install": "relative",
"incenteev-parameters": {
"file": "app/config/parameters.yml"
},
"branch-alias": {
"dev-master": "2.6-dev"
}
}
}
The other thing is that after that step, I need to run php composer.phar update gedmo/doctrine-extensions in composer, but I don't have a a composer.phar file, so I did insted composer update.
Is that O.K., or I need to do an other line?

Answer 1

You can simply use
composer require gedmo/doctrine-extensions
and the composer.json will be automatically modified.
Regarding "composer" vs "composer.phar": yes, they are the same, so you can use whatever you have.
To add more details: usually everyone rename "composer.phar" to "composer" and move it to a binaries location on the os (i.e. /usr/local/bin on Linux) so that it can be used as a common system command. That is probably your situation.

Answer 2

The instruction is unclear, you do not need to change the line
"psr-0": {
"": "src/",
"SymfonyStandard": "app/"
}
Just add "gedmo/doctrine-extensions": "dev-master" to the require section.
Then to run a composer update you should install composer if you have not yet done so (but if you have symfony installed, I think you do unless you followed the instructions in the tutorial in which case I would reinstall symfony the official way as the tutorial refers to an outdated repository)