Tutorial06HookDocument

In this tutorial, through an experiment about hook script, you can learn to write script to hook an access to web document.

Remember Tutorial01HelloWorld, we create index.html.php under _app/hooks.

<?php
$this->message = "World";

This is hook script corresponding to index.html. The hook script is a process executed before showing corresponding HTML page. When HTML page would be shown, if the file named "public file name + .php" exists under _app/hooks, it should be executed as PHP script.

_app/hooks/sub/index.html.php corresponds to sub/index.html. Create files below an access sub/ with your browser:

sub/index.html

<p>${this/message}.</p>

_app/hooks/sub/index.html.php

<?php
$this->message = "This is a sub contents index.";

You can understand that a text in $this->message is shown in <P> tag.

Similarly, sub/sibling.html, sub/child/index.html and sub/child/sibling.html can be treat like above.

sub/sibling.html

<p>${this/message}.</p>

_app/hooks/sub/sibling.html.php

<?php
$this->message = "This is a sub contents sibling.";

sub/child/index.html

<p>${this/message}.</p>

_app/hooks/sub/child/index.html.php

<?php
$this->message = "This is a child contents index.";

sub/child/sibling.html

<p>${this/message}.</p>

_app/hooks/sub/child/sibling.html.php

<?php
$this->message = "This is a child contents sibling.";

Your pages are all hooked by your PHP script before rendering HTML.

Hey, why do we need to create tow files purposely to show only one page? Isn't better to use plain PHP? We can't agree about your view logic isolation or such as.

Well, yes, yes exactly. Although I can't stop your way if they are as is.

But please wait! The story still not finished. At the next section, you will learn about more hook script not only view/logic isolation.