Apply patches using Composer

To apply official quality patches, use the Quality Patches Tool. Always perform comprehensive testing before deploying any custom patch.

To apply a custom patch using Composer:

1. Open your command line application and navigate to your project directory.

2. Add the cweagans/composer-patches plugin to the composer.json file.

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   composer require cweagans/composer-patches
   

3. Edit the composer.json file and add the following section to specify:
   • Module: "magento/module-payment"
   • Title: "MAGETWO-56934: Checkout page freezes when ordering with Authorize.net with invalid credit card"
   • Path to patch: "patches/composer/github-issue-6474.diff"

   For example:

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     "extra": {
         "composer-exit-on-patch-failure": true,
         "patches": {
             "magento/module-payment": {
                 "MAGETWO-56934: Checkout page freezes when ordering with Authorize.net with invalid credit card": "patches/composer/github-issue-6474.diff"
             }
         }
     }
   

   If a patch affects multiple modules, you must create multiple patch files targeting multiple modules.

4. Apply the patch. Use the -v option only if you want to see debugging information.

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   composer -v install
   

5. Update the composer.lock file. The lock file tracks which patches have been applied to each Composer package in an object.

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   composer update --lock