ZendFramework – Usando parâmentros nas Actions
Para quem usa o ZendFramework, em modo MVC, sabe que o modo para pegar uma váriavel passada por GET/POST/COOKIE, deve ser realizada através dos métodos: getRequest()->getParam(‘nome_da_variavel’), do objeto Zend_Coontroller_Action.
Abaixo mostro uma implementação, que extende a classe Zend_Action para que seja usado os parâmentros no corpo da função.
Hoje você utiliza da seguinte forma:
<?php
class IndexController extends Zend_Controller_Action {
public function indexAction(){
//obterá o parâmentro GET/POST teste
echo $this->getRequest()->getParam('teste');
}
}
A nova forma será:
<?php
class IndexController extends My_Action {
public function indexAction(string $teste){
//obterá o parâmentro GET/POST teste
echo $teste;
}
}
Abaixo a classe My_Action.
Abraços
—————
<?php
/**
* Map request parameters to action method
* @author Albert Varaksin
* @licence public domain
*/
class My_Action extends Zend_Controller_Action
{
/**
* Dispatch the requested action
*
* @param string $action Method name of action
* @return void
*/
public function dispatch($action)
{
// Notify helpers of action preDispatch state
$this->_helper->notifyPreDispatch();
$this->preDispatch();
if ($this->getRequest()->isDispatched()) {
if (null === $this->_classMethods) {
$this->_classMethods = get_class_methods($this);
}
// preDispatch() didn't change the action, so we can continue
if ($this->getInvokeArg('useCaseSensitiveActions')
|| in_array($action, $this->_classMethods)) {
if ($this->getInvokeArg('useCaseSensitiveActions')) {
trigger_error('Using case sensitive actions without word separators is deprecated;
please do not rely on this "feature"');
}
$reflMethod = new Zend_Reflection_Method($this, $action);
$actionParams = $reflMethod->getParameters();
$requestParams = $this->_request->getParams();
$args = array ();
foreach ($actionParams as $param)
{
// get parameter type
if (($reflClass = $param->getClass()) instanceof Zend_Reflection_Class) {
$type = $reflClass->getName();
} else if ($param->isArray()) {
$type = 'array';
} else {
$type = $param->getType();
}
// get passed parameter
$name = $param->getName();
if (isset($requestParams[$name])) {
$value = $requestParams[$name];
} else if ($param->isDefaultValueAvailable()) {
$value = $param->getDefaultValue();
$type = '';
} else {
$docBlock = $reflMethod->getDocblock();
if (($tagRefl = $docBlock->getTag("require_$name"))
instanceof Zend_Reflection_Docblock_Tag) {
$tryClass = trim($tagRefl->getDescription());
if (class_exists($tryClass, true))
throw new $tryClass("Missing value for argument $name");
else
throw new Zend_Controller_Action_Exception("Missing value for argument $name");
}
$value = null;
}
// fix value type
$basicTypes = array(
'int', 'integer', 'bool', 'boolean',
'string', 'array', 'object',
'double', 'float'
);
if (in_array($type, $basicTypes)) settype($value, $type);
else if (strlen($type) && class_exists($type, true)) $value = new $type($value);
$args[] = $value;
}
// dispatch the action
call_user_func_array(array($this, $action), $args);
} else {
$this->__call($action, array());
}
$this->postDispatch();
}
// whats actually important here is that this action controller is
// shutting down, regardless of dispatching; notify the helpers of this
// state
$this->_helper->notifyPostDispatch();
}
}
October 17th, 2009 by alexm
