To get database table columns names of a mysql database you can use "DESCRIBE my_table;" method.
Get, Set and Delete configuration value by drush
Get (drush config-get)
drush cget CONFIG_NAME CONFIG_KEY
drush cget system.site
drush cget system.site page.front
Set (drush config-set)
If you have an error like this, when you use a custom views filter plugin, the resent is now you need to have a config schema for all Views filter plugins.
The error :
CAUTION : At this day (2017-10-12), Drupal commerce is very young. Therefor you can start the development of your e-commerce site but you may have bugs and security issues.
Example 1 (for drupal 7)
Step 1. Add file brows
Disable cache for a custom page from route declaration.
If you want to disable cache for a custom controller (Custom module), You have no_cache option (YOUR_MODULE.routing.yml).
File : mymodule.routing.yml
On drupal 8 every elements (almost) are an entity, as any entity you can render a node.
First, Create autocomplete controller and the route
Example of the controller : DefaultController.php
The metatag module provide an API (hook) to alter all meta tags : hook_metatag_metatags_view_alter
NOTE : This is not the drupal best practice.