Magento2: How to include third pary module through composer.json in custom module

Question

I created a custom module, this module depends on thirt party module(tecnickcom/tcpdf), I added this library in my custom module composer.json file

{
"name": "packagename/mymodule",
"description": "N/A",
"require": {
    "php": "~5.5.0|~5.6.0",
    "magento/magento-composer-installer": "*",
    "tecnickcom/tcpdf":"*"
},
"type": "magento2-module",
"version": "2.0.0",
"license": [
    "GPL-3.0"
],
"autoload": {
    "files": [
        "registration.php"
    ],
    "psr-4": {
        "Packagename\\Mymodule\\": ""
    }
}

}

when i run this composer.json file its create vendor folder in my custom module and download "tecnickcom/tcpdf" library, but it should be in root vendor folder. how can i achieve this.

Answer 1

You should only run composer install or composer update in the "root project". In your case this is the Magento installation. But since it seems like you did not add your custom module with composer but developing it as part of the root project, its own composer.json has no effect at all.

So, you have to add the requirement on your own. Run this in the Magento root directory:

composer require tecnickcom/tcpdf

Note that if you publish your module and others install it via composer, this step is not necessary anymore.

Answer 2

Add this :

"module-path": { "type": "path", "url": "app/code/Module/Module" },

to you repository section of the composer json

run composer require module/module

You will install your module and dependencies