OOP Form validator help

[flexrocks]

So i have a pretty basic form validator that checks if the field is valid but i'm having hard time trying to implement rules. i have already implemented a few rules but how can i implement max_length and min_length?

here is my validate function

public function validate($field,$value,$rules)
   {
   	 $field = ucfirst($field);
   	 $rules = explode('|',$rules);
   	 foreach($rules as $rule)
   	 {
   	 	switch($rule)
   	 	{
   	 		case 'required':
   	 			$this->shouldBeRequired($field, $value);
   	 			break;
   	 		case 'string':
   	 			$this->shouldBeString($field,$value);
   	 		    break;
   	 		case 'email':
   	 			$this->shouldBeEmail($field, $value);
   	 			break;
   	 		case 'number':
   	 			$this->shouldBeNumber($field,$value);
//    	 		default:
//    	 			throw new ErrorException("$rule doesn't exist");
   	 	}
   	 }
   }

i want to do case 'max_length' but i have no idea how. the rule should look like this max_length:60|required any help is appreciated

[requinix]

the rule should look like this max_length:60|required

Are you married to that idea? Because something like

array("max_length" => 60, "required" => true)

looks a lot nicer to me.

 

To answer the question as asked, you need to break apart $rule on the colon so you can have the first part (the type of rule) separate from the rest (data for the rule). explode() can do it

list($type, $data) = explode(":", $rule, 2); // a:b:c:d -> a, b:c:d

Then check $type and use $data however is needed.