System configuration is a simple way to store single values required for application functionality in both Magento 1 and 2. In this post, we will show you how to add custom system configuration settings in Magento 2.

System configuration values in Magento 2 are stored in the core_config_data database table, which is exactly the same as in Magento 1. But the xml config files differ.

System configuration is a very useful feature of the Magento platform. At the same time, it’s easy to create new configurations for your own custom solutions. We’ve already touched the topic on how to add new system configurations with different fields. Today I would like to describe one more type of fields, which can be used depending on your needs. This is a dynamic field block. Sometimes we need to have some complex data managed via system configurations, or we even don’t know beforehand the number of records to be added. In this case it’s impossible to create the exact fieldset in a system configuration tab. Therefore, dynamic fields will be really useful.

If you recently started to learn Magento and presently develop own Magento extensions, one day you will face with Admin’s System Configuration section. This is a place where you can store some settings for your module. There are many tutorials on the web, explaining how to set up different form elements in System Configuration. This article shows how to add a button.