Revert last commit in GIT

$ git commit -m "Something terribly misguided"          	(1)
$ git reset HEAD~                                       	(2)
<< edit files as necessary >>                           	(3)
$ git add ...                                           	(4)
$ git commit -c ORIG_HEAD                               	(5)

1. This is what you want to undo
2. This leaves your working tree (the state of your files on disk) unchanged but undoes the commit and leaves the changes you committed unstaged (so they’ll appear as “Changes not staged for commit” in git status and you’ll need to add them again before committing). If you only want to add more changes to the previous commit, or change the commit message1, you could use git reset –soft HEAD~ instead, which is like git reset HEAD~ but leaves your existing changes staged.
3. Make corrections to working tree files.
4. git add anything that you want to include in your new commit.
5. Commit the changes, reusing the old commit message. reset copied the old head to .git/ORIG_HEAD; commit with -c ORIG_HEAD will open an editor, which initially contains the log message from the old commit and allows you to edit it. If you do not need to edit the message, you could use the -C option.

Drupal Urls

 

DESCRIPTION	CODE
Get route name from current url	$variables[‘route_name’] = \Drupal::routeMatch()->getRouteName();
Generate url full path	$url = \Drupal\Core\Url::fromUri(“base:/user/$uid”,array(‘absolute’ => TRUE))->toString();node/1 to http://website.com/node/1
Generate url from route	\Drupal::url(‘tex.dashboard’) http://texportal.com/dashboard
To convert url from path given	$url = ‘/taxonomy/term/’ . $tid; $result = \Drupal::service(‘path.alias_manager’)->getAliasByPath($url) #Alternate method if object is having a function url() $breadcrumb[‘url’] = $object->url(‘canonical’, [‘absolute’ => TRUE]);
Get URL from Url object	$slidersObject[1]->field_read_more[0]->getUrl()->setAbsolute()->toString()

GIT

Table for git commants

ISSUE	SOLUTION
Initialize git in a project or folder	git init
#create a gitignore file to add files that are needed to be not uploaded	sudo cp example.gitignore .gitignore
Add all files	git add . OR git add –A OR git add —all
Set repository	git remote add origin https://**********@bitbucket.org/******/*****.git
Commit added file	git commit –m “initial-commit”
To overwrite last commit message	git commit —amend “message”
Configure user mail and name before performing a commit	git config —global user.email “*****@4spots.com” git config —global user.name “****”
Push committed work to a repository P.S: pushing to a branch is always at the risk of the developer	git push origin <branch name>
Push committed work to a new branch in repository	git push –u origin <branch name>
Pull from repo	git pull origin <branch name>
Ignore the current changes in a file Ignore all current changes	git checkout — <file–name> git checkout — .
Download all objects and refs from another repository	git fetch —all
Lists all branches both from local and remote	git branch -a
Commit a file only once and leave future changes ignored and revert it back	git update–index —assume–unchanged [<file> …] git update–index —no–assume–unchanged [<file> …]
Clone from a particular branch	git clone –b <branch_name> —single–branch e.g: https://name4spots@bitbucket.org/team4spots/bib024.git
Fetch a file from another branch	git checkout <target_branch_name> — <file_name_with_path> Eg:- git checkout html_branch — web/themes/custom/bib/css/style.css
To Change the current origin in an already present git configured folder	git remote set–url origin git://new.url.here or edit .git/config and change the URLs there.
Move existing, uncommitted work to a new branch in Git	just create a branch as normal then those changes will be in your new branch.
create a new branch	git checkout –b <new–branch>
Push a new branch to repo	git push –u origin <new–branch>
List newly added files between two branches	git diff —name–only —diff–filter=A master bib027–299
To list files from only a particular folder	git diff —name–only —diff–filter=A master bib027–299 | grep config/sync/
To delete a branch	git branch –d branch_name git branch –D branch_name //forcefully delete git push –d <remote_name> <branch_name> //delete from repo
To pull from the currently working branch	git pull
To push to the currently working branch	//git config –global push.default simple git push

Render a View in drupal

$args = [$tid];
  $view = Views::getView('test_view');
    if (is_object($view)) {
      $view->setArguments($args);
      $view->setDisplay('block');
      $view->preExecute();
      $view->execute();
      $content = $view->buildRenderable('block', $args);
    }

Adding a twig extension in drupal 8

/**
 * My awesome twig extension.
 */
class MymoduleTwigExtension extends TwigExtension {

  /**
   * {@inheritdoc}
   */
  public function getFunctions() {
    return [
      new Twig_SimpleFunction('url_path', array($this, 'getPathFromUrl'))
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function getName() {
    return 'mymodule_core';
  }

  /**
   * Gets a path from Url object.
   *
   * @param \Drupal\Core\Url $url
   *   The URL object to retrieve the path from.
   *
   * @return string
   *   Path to where the Url object is poiting to.
   */
  public function getPathFromUrl(Url $url) {
    return $url->toString();
  }
}

Render a webform in drupal

$webform = \Drupal::entityTypeManager()->getStorage('webform')->load(webformId);
$view_builder = \Drupal::service('entity_type.manager')->getViewBuilder('webform');
$build = $view_builder->view($webform);

OR

$webform = \Drupal::entityTypeManager()->getStorage('webform')->load(webformId)->getSubmissionForm()

Creating a drupal custom block programatically

View at Medium.com

Drupal issues and solutions

ISSUES	SOLUTION
Aggregate css file in server clear cache issue to be resolved	Need to set the temp folder in server.
directory /tmp does not exist.  OR Not fully protected	Set the tmp folder path to server tmp folder location. Location in sentora: /var/sentora/temp
Trusted Host Settings -> Not enabled	Insert below code in settings.php $settings[‘trusted_host_patterns’] = array(   ‘^example\.com$’,   ‘^www\.example\.com$’,   ‘^localhost$’, );
Unable to create :: The TCPDF cache directory,	Create tcpdf/cachecahe in the temp folder
PHP OPcode caching -> Not enabled	Install opcode from http://php.net/manual/en/opcache.installation.php Add these lines in php.ini [opcache] zend_extension=php_opcache.dll opcache.enable=1
Update notifications -> Not enabled	Enable Update Manager module in backend
Unable To edit super user :: Commonly occured when a site is installed through drush site install.	Issue with time zone saved go to DB table user_field_data edit timezone of the user id “1” some valid timezone say “Asia/Kolkata”
Mismatched entity and/or field definitions	drush entup
Forgot Admin UserName and Password	drush uinf uid E.g:drush uinf 1 drush upwd username —password=newpassword E.g:drush upwd admin —password=abc123
The following module is missing from the file system…	drush sql–query “DELETE FROM key_value WHERE collection=’system.schema’ AND name=’module_name’;”
Changing the sync directory	Add the following line in settings.local.php or settings.php $config_directories[‘sync’] = ‘{path to the desired folder}/’;
Sync uuid when drush is not configured	Go to database config table => search for “system.site”  download the data blob then edit uuid:  Then replace the uuid with the uuid from the main site (from which site is cloned).
For more Drush Commands Click	For more Drupal Console Commands Click
To generate some sample content for testing purpose,	drush genc <number of nodes> <number of comments> —types=<content type> e.g: drush genc 3 0 –types=bank
To import and export configuration to a custom folder	drush config–import —source=“<folder-path>” drush config–export —destination=“<folder-path>”
Dump database and files	drush sql-dump filename E.g:
Dump  database and files	mkdir /4spDrive/${PWD##*/}/$(date +”%Y-%m-%d”) drush sql-dump > “/4spDrive/${PWD##*/}/$(date +”%Y-%m-%d”)/${PWD##*/}-$(date +”%Y-%m-%d”).sql” zip -r /4spDrive/${PWD##*/}/$(date +”%Y-%m-%d”)/${PWD##*/}-$(date +”%Y-%m-%d”).zip docroot/sites/default/files/ For project inside web folder zip -r /4spDrive/${PWD##*/}/$(date +”%Y-%m-%d”)/${PWD##*/}-$(date +”%Y-%m-%d”).zip web/sites/default/files/
Import db and files	Copy sql and zip file to project root folder drush sql-drop -y; drush sql-cli < path_to_sql.sql Take backup of files if needed sudo mv docroot/sites/default/files docroot/sites/default/files1 unzip files.zip Remove backup sudo rm -rf docroot/sites/default/files1 Then, git clean -f
Site broken when aggregation is on	Check sites/default/files have full write permission Check the Temp directory configured and it is having full write permission If still the site is broken: Should be a problem with the .htaccess in sites/default/files. Deactivate all lines in the .htaccess. Clear the cache it should work. Turn all htaccess rules back. Clear the cache it should still work. (Reference)
List the custom blocks and their corresponding uuids	drush sqlq ‘SELECT id,uuid FROM block_content’

Drupal 8 Multisite configuration

• Install multisite in existing project

  drush site-install --db-url=mysql://root:spots@localhost/bac009_portal --sites-subdir=portal --yes --account-mail="mail@mailss.com" --account-name=superadmin --account-pass=123456 --site-mail="tech@mails.com" --site-name="bac portal"
  

• Multisite Config export

  1. Get Multisite uri

     drupal debug:multisite

  2. Set config path in settings.php

     /var/www/html/old-bac009-drupal8/web/sites/portal/settings.php
     $config_directories[‘sync’] = ‘../config/sync/portal’;

  3. Get particular site config using uri

     example: portal.localhost
     drupal –uri=portal.localhost config:export
     Config file directory is -> sites->mutisite_folder->files->config

  4. Clear cache multisite

     drupal cr all --uri=portal.localhost

Issues with drupal core upgrade

1. Frontend Issues
   • Jquery gets upgraded to 3, so many functions wont work also issues arise for bootstrap and owl carousel.
   • Also, a higher version of php is required (It arises while uploading to otherserver)
2. Update error
   • MySQL Errors occur when upgrading to 8.5.2:
     missing column revision-default ()

     drush sql-query "ALTER TABLE block_content_revision ADD COLUMN revision_default tinyint(5) AFTER revision_log"

   • One error

     drush sql-query "DELETE FROM config WHERE name = ‘system.action.comment_delete_action’;DELETE FROM config WHERE name = ‘views.view.comment’;TRUNCATE TABLE cache_config;"