Lesson 10 - The flash-message mechanism
In the previous lesson, Securing templates, we modified our system to protect template variables right before they're printed. In today's tutorial, we'll add a mechanism that displays flash messages to a user.
On desktop operating systems like Windows, OS X, and Ubuntu, we're used to being notified about all sorts of events via message boxes. Naturally, we should introduce a similar mechanism to our website as well. We'll inform the user about important application states. Generally, there are two types of messages, success, and failure. Users are used to this sort of behavior, so it won't come as a surprise to them.
Displaying a message is rather simple. In desktop applications we would write something like this:
In the MVC architecture, the flash message mechanism is implemented by
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In this tutorial, we'll add the flash-message mechanism to our object-oriented MVC CMS in PHP. We'll learn the template syntax for conditions and loops.
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