The Full Stack Web Development - Data Validation & Listing Data

The video tutorial explains how to validate a title field in a model by making it required and setting a minimum length. It then covers editing the controller to handle post submissions, including redirecting or rendering views based on success or failure. The tutorial also demonstrates how to display error messages using Bootstrap alerts and loops. Finally, it shows how to list all posts on an index page, including adding links to individual post pages.

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