cobj如何在typo3扩展中工作？

Question

I am reading one typo3 extension file:

class.tx_jcjob_pi1.php

...
$this->template = $this->cObj->fileResource($this->conf['templateFile']);
...

class.tslib_pibase.php

...
var $cObj;
...

class.tslib_content.php

...
function fileResource
...

Question: How does this line work: $this->cObj->fileResource($this->conf['templateFile']); ?

1. there is not such codes: such as $cObj = new tslib_cObj() , how did $cObj get instantiated?

2. there is no such codes like require_once('class.tslib_content.php'); how could $this->cObj use the method in class.tslib_content.php ?

Answer 1

This is all done by Typo3's page renderer before your plugin's code is executed.

Because the class of your plugin extends pi_base , and pi_base was instantiated by Typo3, alot of functions are already there to leverage.

So if you would not have extended pi_base, $this->cObj would not be there, and you would need to create it yourself with for example:

$cObj = t3lib_div::makeInstance('tslib_cObj');