An Examination of Phoenix LiveView Navigation and Lifecycle Callbacks

The video by Andrew Ian addresses common challenges that beginners face when learning about the lifecycle of Phoenix LiveView. It starts with a walkthrough of creating a new Phoenix project and using generators to create live views. The instructor emphasizes understanding the lifecycle callback functions (mount, handle_params, render), as they are fundamental to working effectively with LiveView. The video shows practical coding sessions, including how to navigate between live views and how to work with URL parameters (params) within lifecycle callbacks. Andrew explains the distinction between full page reloads with `href` and the hot page reloads with `navigate`. He also clarifies the use cases for the `patch` option pertaining to updating portions of a live view without a full reload, essentially for reflecting changes in the URL, such as filtering options on a product page. Additionally, the video contains important clarification on common misconceptions, such as the need to load data in specific callbacks and the correct usage of handle_params for handling URL changes.