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Understanding MVC

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Controlling the App

1:16 with Jonathan Barrios

Learn how the "controller" in MVC acts as the intermediary between users, data, and presentation.

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    Although C is the last letter in MVC, 0:00
    I'm gonna start with it first because it runs the show. 0:02
    C stands for controller, and it handles a the communication between a user and 0:06
    the various parts of an application. 0:10
    For example a, user wouldn't talk directly to the database on IMBb.com. 0:13
    Instead, they would visit a page like this. 0:19
    The URL is known as a route, and 0:22
    represents a request to see information on the classic movie Toy Story. 0:24
    The URL is routed to the controller. 0:29
    Remember, the controller handles all of the communication in the app. 0:32
    The controller then knows that it needs some data. 0:36
    So it requests information about the movie. 0:39
    On a complex web application, you may need to create multiple controllers, 0:43
    each to handle a different type of request. 0:47
    For example, one controller to handle logging in and out of the website. 0:50
    Another controller to handle requests for movie data. 0:55
    Or a handler to process requests from users who want to download movie files. 0:58
    There are more steps to the process, which I'll discuss in the next videos. 1:04
    But at this point, keep in mind that controllers act 1:08
    as an interface between a user and the behind the scenes magic of an app 1:11

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