[TYPO3-ect] validator heresy

[Steve Ryan]

I'm having a go at generation of validator rules from TCA.
I'm looking at using something like
10 {
	field = title
	pattern = /.+/
	message = %%%emptyTitleError%%%
}
20 {
	field = text
	php = if (substr($value)) $return=true;
	message = %%%incorrectTextError%%%
}

to achieve some of the rules that can't be accomplished by preg like unique.

Doesn't smell good but it's convenient ????? Don't imagine that hacking
php snippets into otherwise such well structured codes is not going to
be popular. The value is being able to structure a much more flexible
rule set into an object.

Extension class to validator below
Use it as  follows
$rules=$this->getValidationRulesFromTCA('fe_users','name,email,address');
$rules['50']['field']='name';
$rules['50']['php']='if (strlen($value)<2) $return=true; ';
$rules['50']['message']='too few characters in your name';
$validator->setRules($rules);
$validator->validate();
		
---------------------------

class tx_markablequiz_validator extends tx_lib_validator {
	
	private $rules;
	/**
	 * Set the namespace of rules to be used for validation.
	 *
	 * @param	string		validation rules namespace
	 * @return	void
	 */
	function useRules($path = 'validationRules.') {
		$this->pathToRules = $path;
		$this->rules=$this->controller->configurations->get($this->pathToRules);
	}
	
	function setRules($rules) {
		$this->rules=$rules;	
	}
	
	function getRules() {
		return $this->rules;
	}
	
	function validate($object = null) {
	if(is_object($object)) {
			$this->setArray($object);
		}
		if(is_array($this->rules)) {
			$this->_validateByPREGAndPHPRules();
		}
		$this->set('_errorList', $this->errors);
		$this->set('_errorCount', count($this->errors));
	}
	
	function _validateByPREGAndPHPRules() {
		//debug(array('rules',$this->rules));
		foreach($this->rules as $rule) {
			// assume variables $value and $return
			if ($rule['php'])  {
				$value=$this->get($rule['field']);
				$return=false;
				eval($rule['php']);
				//echo $rule['php'];
				if ($return) {
					echo 'fail php test '.$rule['message'];
					$this->errors[] = array_merge(array('.type' => 'rule'), $rule);
				}
				
			} else if($rule['pattern']&&!preg_match($rule['pattern'],
$this->get($rule['field']))) {
				
			}
		}
	}
}