How are setup scripts used in Magento 2?
As their names imply, the Setup/InstallSchema.php and Setup/InstallData.php scripts are run when the module is first installed and are used to modify the database structure and content respectively. An example of a Setup/InstallSchema.php script looks like this:
How to make a custom component in Magento?
To use a custom implementation of an existing Magento JS component: Place the custom component source file in one of the following locations: Create a RequireJS configuration file requirejs-config.js, having specified the following:
When to run installschema.php in Magento 2?
As the names suggest, the InstallSchema.php and InstallData.php scripts run when the module is first installed in Magento 2. These scripts are used to modify the data and structure of the database respectively. It means, if InstallSchema.php and InstallData.php are created after the installation of the module, they will never be executed.
What should be the name of the Magento widget?
According to the jQuery widgets naming convention, this value must contain a namespace and name. mage. – the name of the Magento widget that you extend. When using custom JS, try to keep dependencies to a minimum. Additional dependencies demand more web requests, which can slow rendering.
How to create a custom module in Magento 2?
Module is a structural element of Magento 2 – the whole system is built upon modules. Typically, the first step in creating a customization is building a module. To create a module, you need to complete the following high-level steps: Create the module folder. Create the etc/module.xml file.
Can you change the database in Magento 2?
Altering the database by direct SQL queries won’t work. Instead, Magento 2 has install and upgrade scripts in every module (optionally). These scripts contain commands to modify the database schema or data. To track whether to execute a script or not, Magento 2 uses module versions.