sumanthkumarc

This documentation is destined for drupal.org. Created first as a gist to make initial comments easier. Rewrites and clarifications welcome. Code samples are simplified for clarity. Perhaps a bit too much?

When talking about extensibility, there are several distinct use cases:

1. Reacting to an action that has already happened.

The reaction can be anything; outputting a message, sending an email, modifying a related object, etc. Examples:

• "A node has been saved"
• "A product has been added to the cart".

sumanthkumarc

<?php

use Drupal\Core\Url;
      
$entities = [node_object];
$scheme = 'public';
$filename = 'something.pdf';
$export_type = 'pdf';

/* @var \Drupal\entity_print\PrintBuilder $print_builder */

sumanthkumarc

/**
 * Adds a given user as member with given role to given group.
 * @param GroupInterface $group
 *  Group Entity
 * @param UserInterface $user
 *  An user account entity of type User Interface , not of Account Interface.
 * @param array $role
 *  A group role in format : [GROUPTYPE]-[role] Ex: group-teacher
 */
function add_member_to_group(GroupInterface $group, UserInterface $user, $role) {

sumanthkumarc

/**
 * Implements hook_form_alter().
 */
function commerce_checkout_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  if (strpos($form_id, 'views_form_commerce_cart_form_') === 0) {
    // Only add the Checkout button if the cart form view has order items.
    $view = reset($form_state->getBuildInfo()['args']);
    if (!empty($view->result)) {
      $form['actions']['checkout'] = [
        '#type' => 'submit',

sumanthkumarc

sudo apt-get install openjdk-8-jdk

cd /opt

sudo wget http://www.us.apache.org/dist/lucene/solr/6.3.0/solr-6.3.0.tgz

sudo tar xzf solr-6.3.0.tgz solr-6.3.0/bin/install_solr_service.sh --strip-components=2

sudo ./install_solr_service.sh solr-6.3.0.tgz

sumanthkumarc

settings = {
  scheme: 'http',
  port: 8080,
  host: 'localhost',
  resource: '/socket.io',
  serviceKey: 'any-id-same-as-in-drupal-config',
  backend: {
    port: 80,
    host: 'site-host-name',
    scheme: 'http',

sumanthkumarc

Temporarily use the drush, drupal console and composer.

Drupal Console:
// download the drupal console php archive file
curl https://drupalconsole.com/installer -LO drupal.phar
// set executable on your phar file
chmod +x drupal.phar
// Set alias to use
alias dc="/path/to/file/drupal.phar"
// check if its working

sumanthkumarc

$('document').ready(function () {

    // Below code takes care of adding All checkbox to options.
    var i = 0;
    $(".form-checkboxes").each(function () {
        i++;

        // Add events.all checkbox only if there are more than 2 options.
        if ($(this).children().length > 2) {

sumanthkumarc

<?php

use Drupal\Core\Render\BubbleableMetadata;

/**
 * @implements hook_token_info().
 */
function my_module_token_info() {
  $type = [
    'name' => t('Custom tokens'),

sumanthkumarc

sudo apt-get install libgnome-keyring-dev
cd /usr/share/doc/git/contrib/credential/gnome-keyring
sudo make
git config --global credential.helper /usr/share/doc/git/contrib/credential/gnome-keyring/git-credential-gnome-keyring


to store in cache:
#18000 = 5 hrs

git config --global credential.helper "cache --timeout=18000"