Skip to main content

Composer With Drupal 8

Steps to install the d8 site with composer:


1 - composer create-project drupal/recommended-project drupal8-pattern --no-interaction

2 - Add the permission /sites/default/files -- 777

and then visit the project from the browser and install,

Composer.json :

To start using Composer in your project, all you need is a composer.json file. This file describes the dependencies of your project and may contain other metadata as well.

Installing dependencies :
php composer.phar install
When you run this command, one of two things may happen: with composer.lock or without composer.lock

Installing without composer.lock

If you have never run the command before and there is also no composer.lock file present, Composer simply resolves all dependencies listed in your composer.json file and downloads the latest version of their files into the vendor directory in your project. (The vendor directory is the conventional location for all third-party code in a project).

Tip: If you are using git for your project, you probably want to add vendor in your .gitignore. You really don't want to add all of that third-party code to your versioned repository.


When Composer has finished installing, it writes all of the packages and the exact versions of them that it downloaded to the composer.lock file, locking the project to those specific versions. You should commit the composer.lock file to your project repo so that all people working on the project are locked to the same versions of dependencies (more below).

Installing with composer.lock


This brings us to the second scenario. If there is already a composer.lock file as well as a composer.json file when you run composer install, it means either you ran the install command before, or someone else on the project ran the install command and committed the composer.lock file to the project (which is good).

Either way, running install when a composer.lock file is present resolves and installs all dependencies that you listed in composer.json, but Composer uses the exact versions listed in composer.lock to ensure that the package versions are consistent for everyone working on your project. As a result you will have all dependencies requested by your composer.json file, but they may not all be at the very latest available versions (some of the dependencies listed in the composer.lock file may have released newer versions since the file was created). This is by design, it ensures that your project does not break because of unexpected changes in dependencies.

Commit your composer.lock file to version control#

Committing this file to VC is important because it will cause anyone who sets up the project to use the exact same versions of the dependencies that you are using. Your CI server, production machines, other developers in your team, everything and everyone runs on the same dependencies, which mitigates the potential for bugs affecting only some parts of the deployments. Even if you develop alone, in six months when reinstalling the project you can feel confident the dependencies installed are still working even if your dependencies released many new versions since then. (See note below about using the update command.)

Updating dependencies to their latest versions#

As mentioned above, the composer.lock file prevents you from automatically getting the latest versions of your dependencies. To update to the latest versions, use the update command. This will fetch the latest matching versions (according to your composer.json file) and update the lock file with the new versions. (This is equivalent to deleting the composer.lock file and running install again.)

php composer.phar update
If you only want to install or update one dependency, you can whitelist them:


php composer.phar update monolog/monolog [...]

Packagist#


Packagist is the main Composer repository. A Composer repository is basically a package source: a place where you can get packages from. Packagist aims to be the central repository that everybody uses. This means that you can automatically require any package that is available there, without further specifying where Composer should look for the package.


If you go to the Packagist website (packagist.org), you can browse and search for packages.





Comments

Post a Comment

Popular posts from this blog

Get The field values of node in Drupal 8

use Drupal \ node \ NodeInterface ; /** * Implements hook_ENTITY_TYPE_insert() for node entities. * * This tests saving a node on node insert. * * @see \Drupal\node\Tests\NodeSaveTest::testNodeSaveOnInsert() */ function node_test_node_insert ( NodeInterface $node ) { // Set the node title to the node ID and save. if ( $node - > getTitle ( ) == 'new' ) { $node - > setTitle ( 'Node ' . $node - > id ( ) ) ; $node - > setNewRevision ( FALSE ) ; $node - > save ( ) ; } } Now There is so many functions are there to get the values, For All the functions available visit the API code, https://api.drupal.org/api/drupal/core%21modules%21node%21src%21NodeInterface.php/interface/NodeInterface/8.2.x Some of as below, Node edit form, Drupal 8 Automatically Load the whole object no need to load the entity like below, if ($event->getFormId() == 'node_alexa_audio_clips_edit_form') { $node = \Drupal::ro...
Post a Comment
Read more

Dependency Injection in Drupal 8

Here are the important nuggets: DI is a design pattern used in programming. DI uses composition. DI achieves inversion of control. Dependency == service that your class needs == object of a certain type. Inject == provide == compose == assemble. Container == service container == dependency container. Instead of using  \Drupal::service('foo_service') , get the service from the  $container  if using a class. And the important reasons: Externalizing dependencies makes code easier to test. It allows dependencies to be replaced without interfering with other functionality. Retrieving dependencies from the container is better for performance. Services: node.grant_storage The easiest examples to find are services that have arguments, because you can search *.services.yml files for the word "arguments". In  node.services.yml  for example, there is this entry: node.grant_storage: class: Drupal\node\NodeGrantDatabaseStorage argument...
Post a Comment
Read more

Mysql Interview Questions

Current mysql version : 8 ( last was 5.7 ,  5.7 to directly 8 ) SHOW FULL PROCESSLIST is used to see all the query executing when refresh the site. 1 second == 1000 mili second, 0-500 ms responce time of any query is ok How to Read the MySQL Slow Query Log :   The MySQL slow query log is where the MySQL database server registers all queries that exceed a given threshold of execution time. This can often be a good starting place to see which queries are slowest and how often they are slow. MySQL on your server is configured to log all queries taking longer than 0.1 seconds. /var/log/mysql/mysql-slow.log Use EXPLAIN or EXPLAIN EXTENDED to explain the query how it is executed. MySQL  describe  or  ANALYZE  command shows the structure of the table. Best practice in respect of performance : 1 - always use index, 2 - index types , primary index and combined field index like fname & lname in one index not two index, 3 - one index sc...
Post a Comment
Read more