Use an after plugin to modify the result of a function in Magento

After plugins are used whenever you want to modify the return value of a function. Let’s say we wanted to modify the template of a specific controller, but only when a specific parameter is passed in. We know we can set a template with layout XML, but if we want to conditionally display a template, it’s better to set the template programmatically within a controller class.

Create a new plugin in the Plugin directory named AlternatePostDetailTemplate.php. Declare strict types, set the namespace to Macademy\BlogExtra\Plugin, and name the class AlternatePostDetailTemplate. We want to h...