I called my action from other controller by this code:
Yii::import('application.controllers.ProvinceCityController');
$obj =new ProvinceCityController($id); // preparing object
echo $obj->actiondynamiccities(20);
Can I send my data(20) by post request ? Because actiondynamiccities() get $_POST and do something...
If you need to send a POST variable to a controller you can only do it by using AJAX.
If you want, you can send it by GET with a key to protect its security
Yii::import('application.controllers.ProvinceCityController');
$obj =new ProvinceCityController($id); // preparing object
echo $obj->actiondynamiccities(20, /*SECRET*/);
And in the ProvinceCityController
public function actionDynamicCities($id = null, $key = null)
{
$id = isset($_POST['id']) ? $_POST['id'] : $id;
if(!isset($_POST['id'] && strcmp($key, /*SECRET*/) != 0)
{ throw Exception here... }
...continue with code
}
Also, think of getting this kind of secret even for POST ids.
When a function is useful in multiple times across the multiple controllers, you have to maintain a separate class which can supply this functionality vai it's methods.
Ex: Create a class SharedFuncs and keep that file in components folder
<?php
class SharedFuncs
{
public function hello($name) {
return "Helloo..!, ".ucfirst($name);
}
}
?>
And access the methods any where in your project.
<?php
$utils=new SharedFuncs();
echo $utils->hello('maryam');
?>
Related
I am new to PHP and I want to save an object from this class which I can access in my webservice this object hold a sessions id which can be used for calling an API:
MyObject.php:
class MyObject {
private $sessionId = '';
private function __construct(){
$this->sessionId = '';
}
public static function getInstance() {
if (!$GLOBALS['MyObject']) {
echo 'creating new instance';
$GLOBALS['MyObject'] = new MyObject();
}
return $GLOBALS['MyObject'];
}
public function getSessionsId() {
if ($GLOBALS['MyObject']->sessionId == '') {
// Do curl to get key (works)
if (!curl_errno($curlCall)) {
$jsonObj = json_decode($result);
$sessionID = $jsonObj->session_id;
$GLOBALS['MyObject']->sessionId = $sessionID;
}
}
return $GLOBALS['MyObject']->sessionId;
}
}
Webservice GetKey.php
include 'MyObject.php';
$instance = MyObject::getInstance();
echo $instance->getSessionsId();
The I visit the GetKey.php file it always echoes 'creating new instance'
what you store in $GLOBALS will be destroyed when the page is loaded... that variable is available only when the response is being created...
You don't save an object and use it everywhere (for all users) .. you are in php :) and you can store it anywhere... but if you're in a function then it will be destroyed when you are outside the function...
And in webservices you don't use session because it won't exist at next operation call
In the case that you want to store that variable for multiple requests of the same user you can store it in $_SESSION and not in $GLOBALS...
In PHP everything is destroyed when the user gets the response... (only session is an exception)... a session is like in java or any other language... you have it / user and you can modify it at request time... you don't have something like applicationScope and store there everything for all users... everything is being recreated at every request
I am new to CodeIgniter. I was just thinking, is there any way I can send any variable to the constructor of a controller, the same way I can do in Java when I create an object?
You can send variables to controller function through URL.
For example, if your URL is www.domain.com/index.php/reports/userdata/35
then your controller function in file controllers/reports.php would look like:
function userdata($userId) {
.....
}
I don't know why you want do this and where you intend to get the variable you are sending from but this does work in this case:
function __construct($f=null) {
parent::__construct();
if($f){
return $f; //Here use the variable for whatsoever you want.
}
}
function testvariable($id) { //Using $id, you could still get the value from url
$myVariable = 3; //Or you could just hard code the value
if($id){
$myVariable = $id;
}
echo $this->__construct($myVariable);
exit;
}
When you run http://localhost/controller/testvariable/54
You'd get the result 54
When you run http://localhost/controller/testvariable
You'd get the result 3
Outside these, the other option would be to define the variable in the construct.
I am creating a custom MVC style framework from scratch and am at the point where I need to implement the code to control what happens on POST.
At the moment I have a main index.php which acts as a controller and passes data to other controllers such as:
profilecontroller.class.php
forumcontroller.class.php
At the moment I see two options as to where the POST controllers can go ..
First Approach
Firstly for site wide posts such as login that can occur on any page I would use something like this in the very first index.php to redirect all POST to a specific POST controller that then sends the data to a model to be processed:
if($_POST)
//post controller, works on specific form id's
Alternate Approach
The other option I see would be to build the POST identifier into the model construction sections but I don't think this would be very manageable/wise as they'd always be checked and resulting in more loaded code?
Are there any good/simple examples out there?
I'm creating my mvc to be as light as possible so that's my reason for going from scratch.
In a RESTful setup, you would normally have a controller for an object, say news, and then actions such as add, edit, delete etc.
Within your actions, you should then assert what HTTP method should be used to access the method, if one should be. For example:
<?php
class NewsController extends AbstractController {
public function save() {
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
header('HTTP/1.1 405 Method Not Allowed');
die('Please use POST.');
}
// carry on knowing we're working with a POST request
}
}
Creating a separate controller for POST requests would, as you say, quickly becoming unruly and unmanageable.
If you're looking for a way of handling requests for different HTTP methods within different controller actions, then maybe check out ToroPHP. It's a lightweight (single file) router, where you map a request to a class that's referred to as a handler, and then that handler has methods for different HTTP methods. A quick example:
<?php
require 'lib/torophp/toro.php';
require 'classes/handlers/HomeHandler.php';
$toro = new ToroApplication(array(
array('/', 'HomeHandler')
));
$toro->serve();
And then your HomeHandler would look as follows:
<?php
class HomeHandler {
public function get() {
echo 'Hello, world!';
}
public function post() {
echo 'Try performing a GET request for the home page, buddy.';
}
// and so on...
}
Hope that helps.
This is my default Controller :
<?php
Class Controller_Home{
public $Registery = null;
final public function __construct($Registery){ $this->Registery = $Registery; }
final public function Init($Method=null){
# Quelle action on fait ?
if($Method){
$Split = explode('_', $Method);
$MethodName = 'Action';
foreach($Split as $Splitted){
$MethodName.= '_'.ucfirst($Splitted);
}
if(method_exists($this, $MethodName)){
$this->$MethodName();
} else {
echo '404';
die;
}
} else {
$this->Action_Default();
}
}
final public function Action_Default(){
$this->Registery->Import('Library.Account');
var_dump($this->Registery->Account);
echo 'Default Home';
}
}
As you can see, once you are in Action_Default, you can do whatever you want based on $_GET, $_POST, whatever you want ...
So with this code :
website.com/home/bob/ will use function Action_Bob inside the controller Home (Home::Action_Bob) ... if you see $_POST just put inside Action_Bob this
public function Action_Bob(){
if($_POST){
$this->Action_Bob_Post();
}
// continue
}
I am using ZendFramework with PHP, and I want to set and get a variable as a global variable. I.E. I set it in the class of Zend Controller and access it any action in the class.
For example:
<?php
class SubscriptionController extends Zend_Controller_Action
{
private $EMAIL = false;
private $USERNAME = false;
First I am validating email addres with ajax call
public function checkusernameAction()
{
$email = //query to find email;
if($email){
$EMAIL = true;
}else{
$EMAIL = false;
}
}
then I want subscribe user on the basis of private variable again with ajax call
public function subscribeAction
{
if($EMAIL == true)
{
//some stuff
}
}
I am getting private var by $this->EMAIL, but not able to access it
You can use Zend_Registry to use the variable throughout application.
You can set a variable like this
Zend_Registry::set('email', $EMAIL);
and later can get it like this
$email= Zend_Registry::get('email');
Looks to me like you are making two distinct requests calling, respectively, checkusernameAction() and subscribeAction(). Since these are distinct requests, the email value you set in the controller during checkusernameAction() will be gone on the second request which calls subscribeAction(). It's the same controller class, but you are looking at two distinct instances, one in each request.
As I see it, you can either:
Pass the email address in each AJAX request, but this seems unlikely since you get the email address from the first call to checkusernameAction().
Save the email in the session during the first checkusernameAction() call and then pick it up during the second subscribeAction() call.
Extract the "get email from username" code into a separate class or method and then call it in both places. After all, you don't want to get bitten by a "race condition" in which the state of the system changes between the two AJAX requests (maybe the user's email changes via some other process or via another set of requests that occur after the first AJAX request containing the call to checkusernameAction().
You can also used a function for set and get a value.
// Setter function
public function setConsumerKey($key)
{
$this->_consumerKey = $key;
return $this;
}
// Getter function
public function getConsumerKey()
{
return $this->_consumerKey;
}
I've been having problems created modular reusable components in my Zend Framework app. In this case I'm not referring to Zend Framework modules but rather the ability to have a reusable MVC widgety thing if you like. The problems I'm having may be very particular to my implementation, but I'm completely happy to throw it out and start again if someone can point me in the right direction. Anyway, specifics and code will hopefully explain things better and even if what I'm doing is not the best way it should show what I'm trying to achieve:
A simple example is a Mailing List sign up form. I want to include this on several pages of the site which use different Controllers and this presents a few problems in how to process the data and return relevant messages. I don't want to do either of the following as they really smell:
Create a base controller with the form processing in and extend (Bad)
Duplicate form processing code in relevant controllers (Even worse!)
The clean way to go feels to me to create a new Controller to process the mailing list form data, use a View Helper to easily output the form and relevant markup into the desired pages and then redirect back to the page where signup occurred once the form has been processed. However, I'd like to use the form validation provided by Zend_Form, which means I'd need to pass the form object back to the view helper somehow if validation fails but in the same request. I'm currently doing this by setting it as a variable on the view and then forwarding back to the previous page rather than redirecting, which is ok(ish). If validation is ok then I'd prefer to use a redirect back to the original page. I'm having trouble doing this though as I'd like to pass messages back to the component about the state of signup. Normally I'd use the FlashMessenger Action Helper, I could namespace it in this case so messages didn't clash with other page data, but I can't access it from within a View Helper. So currently I'm forwarding in this case too. I'd much prefer a redirect to prevent form resubmissions if a user refreshes the page and to keep the URL clean. I realise I essentially want to have a mini MVC dispatch process within a page and I think that's what the action stack is for? I really don't know much about this though and any pointers would be greatly appreciated. Here's my current code:
Controller:
<?php
class MailingListController extends Zend_Controller_Action {
public function insertAction() {
$request = $this->getRequest();
$returnTo = $request->getParam('return_to');
if(!$request->isPost() || (!isset($returnTo) || empty($returnTo))) {
$this->_redirect('/');
}
$mailingList = new Model_MailingList();
$form = new Form_MailingList();
$returnTo = explode('/', $returnTo);
if($form->isValid($_POST)) {
$emailAddress = $form->getValue('email_address');
$mailingList->addEmailAddress($emailAddress);
$this->view->mailingListMessages = $mailingList->getMessages();
$this->view->mailingListForm = "";
}
else {
$this->view->mailingListForm = $form;
}
$this->_forward($returnTo[2], $returnTo[1], $returnTo[0]);
}
}
return_to is a string containing the current URI (module/controller/action), which is generated in the View Helper. I'd prefer to redirect inside the $form->isValid($_POST) block.
View Helper:
<?php
class Zend_View_Helper_MailingList extends Zend_View_Helper_Abstract {
public function mailingList($form, $messages = "") {
if(!isset($form)) {
$request = Zend_Controller_Front::getInstance()->getRequest();
$currentPage = $request->getModuleName() . '/' . $request->getControllerName() . '/' . $request->getActionName();
$form = new Form_MailingList();
$form->setAction('/mailing-list/insert');
$form->setCurrentPage($currentPage);
}
$html = '<div class="mailingList"><h2>Join Our Mailing List</h2>' . $form;
$html .= $messages;
$html .= '</div>';
return $html;
}
}
Getting an instance of the Front Controller in the View Helper isn't ideal but I'd prefer to encapsulate as much as possible.
If I have a form object where validation has failed I can pass it back into the helper to output with error messages. If I have some messages to render I can also pass them into the helper.
In my view scripts I'm using the helper like so:
<?=$this->mailingList($this->mailingListForm, $this->mailingListMessages);?>
If neither mailingListForm or mailingListMessages has been set on the view by MailingListController, it will output a new form with no messages.
Any help is greatly appreciated!
Using ajax seems to be an optimal way. View Action Helper is used only for the first load of the mailing form.
Controller
class MailingListController extends Zend_Controller_Action {
public function insertAction() {
$request = $this->getRequest();
$form = new Form_MailingList();
if ($request->isPost()) {
if ($form->isValid($request->getPost())) {
$mailingList = new Model_MailingList();
$emailAddress = $form->getValue('email_address');
$mailingList->addEmailAddress($emailAddress);
$form = $mailingList->getMessages();
}
}
$this->view->form = $form;
}
}
view script insert.phtml
<?php echo $this->form; ?>
Form class
class Form_MailingList extends Zend_Form {
public function init() {
//among other things
$this->setAttrib('id', 'mailing-list-form');
$this->setAction('/mailing-list/insert');
}
}
View Helper
class Zend_View_Helper_MailingList extends Zend_View_Helper_Abstract {
public function mailingList() {
$this->view->headScript()->appendFile('/js/mailing-list.js');
return '<div id="mailing-list-wrap">' . $this->view->action('insert', 'mailing-list') . '</div>';
}
}
JS file mailing-list.js
$(document).ready(function() {
$('#mailing-list-form').submit(function() {
var formAction = $(this).attr('action');
var formData = $(this).serialize();
$.post(formAction, formData, function(data) {
//response going in form's parent container
$(this).parent().html(data);
});
return false;
});
});
I think the way you've done it is pretty close to what I would do. If you set aside the requirement of wanting to display the Zend_Form error messages in the page, then what you do instead is:
The view helper just displays the form (it doesn't need to take the form object or messages as parameters)
The form submits to your other controller as it does now
The mailing list controller redirects (instead of forwarding) back to the return URL on success
The mailing list controller redisplays the form on its own, along with errors on failure
This makes everything much simpler, the only issue is that if there are any validation errors then the user loses their context and gets a plain old page with the form on instead of where they were. You can then address this (either now or at a later date) by changing the form to submit via. Ajax instead, and rendering the errors via. JS. But this would be a fair amount of work.
OK, I've come up with a solution that I feel happier about and solves some of the problems I was facing. Hopefully, this might help someone out who's facing similar issues. The only downside now is that I'm referencing the Model inside the View Helper. Not loose coupling I know but I've seen this done several times before and it's even recommended in the ZF docs as a way to avoid using the 'action' view helper (which will create a new MVC dispatch loop). On the whole, I think the DRYness and encapsulation is worth it, there's probably some other suitable lingo too.
In order to be able to use a redirect back from my MailingListController but maintain the messages from my model and any form validation errors I need to store them in the session. For messages I'd normally use the FlashMessenger action helper, but as getting hold of this in a View Helper is not best practice, it won't handle my form errors and all it's really doing is saving stuff to the session anyway it's unnecessary. I can implement my own session storage in the Model_MailingList, which I can also use for the form errors. I can then repopulate the form with the errors after the redirect and print out any relevant messages. Anyway, here's the code:
Controller:
<?php
class MailingListController extends Zend_Controller_Action {
public function insertAction() {
$request = $this->getRequest();
$returnTo = $request->getParam('return_to');
if(!$request->isPost() || (!isset($returnTo) || empty($returnTo))) {
$this->_redirect('/');
}
$mailingList = new Model_MailingList();
$form = new Form_MailingList();
if($form->isValid($_POST)) {
$emailAddress = $form->getValue('email_address');
$mailingList->addEmailAddress($emailAddress);
}
else {
$mailingList->setFormErrors($form->getMessages());
}
$redirect = rtrim($request->getBaseUrl(), '/') . $returnTo;
$this->_redirect($redirect);
}
}
I've added a method to my Model_MailingList class; setFormErrors($errors) that I pass the error messages from the form if it fails validation. This saves the error array to the session.
I normally use a base model class that has addMessage and getMessages methods. These just access a protected array of messages. In my Model_MailingList I override these methods to store the messages in the session instead. In the addEmailAddress($emailAddress) method I'm already calling addMessage to say whether inserting the email address to the db has been successful.
Model:
<?php
class Model_MailingList extends Thinkjam_Model_DbAbstract {
private $_session;
public function __construct() {
$this->_session = new Zend_Session_Namespace(__CLASS__);
}
public function setFormErrors($errors) {
$this->_session->formErrors = $errors;
}
public function getFormErrors() {
$errors = array();
if(isset($this->_session->formErrors)) {
$errors = $this->_session->formErrors;
unset($this->_session->formErrors);
}
return $errors;
}
// override addMessage and getMessages
protected function addMessage($message) {
if(!isset($this->_session->messages)) {
$this->_session->messages = array();
}
$this->_session->messages[] = $message;
}
public function getMessages() {
if(isset($this->_session->messages)) {
$this->_messages = $this->_session->messages;
unset($this->_session->messages);
}
return $this->_messages;
}
…
public function addEmailAddress($emailAddress) {
...
// I call this if db insert was successful:
$this->addMessage("Thank you. You have been successfully added to the mailing list.")
}
}
I now don't need to pass any params to the view helper as it can query it's state from the Model directly. $this->view->messenger is just another view helper that converts an array to an unordered list.
View Helper:
<?php
class Zend_View_Helper_MailingList extends Zend_View_Helper_Abstract {
private $_mailingList;
public function MailingList() {
$this->_mailingList = new Model_MailingList();
return $this;
}
public function getForm() {
$request = Zend_Controller_Front::getInstance()->getRequest();
$currentPage = '/' . $request->getModuleName() . '/' . $request->getControllerName() . '/' . $request->getActionName();
$form = new Form_MailingList();
$form->setAction('/mailing-list/insert');
$form->setCurrentPage($currentPage);
$form->setErrors($this->_mailingList->getFormErrors());
$html = '<div class="mailingList"><h2>Join Our Mailing List</h2>' . $form;
$html .= $this->view->messenger($this->_mailingList->getMessages());
$html .= '</div>';
return $html;
}
}
Then in the Form_MailingList class I just need to add an additional method to repopulate the error messages. Although getMessages() is a method of Zend_Form there doesn't appear to be any corresponding setMessages(). You can do this on a Zend_Form_Element however, so I've added the following function to the Form_MailingList class:
Form:
<?php
class Form_MailingList extends Thinkjam_Form_Abstract {
...
public function setErrors(array $errors) {
foreach($errors as $key => $value) {
$this->getElement($key)->setErrors($value);
}
}
}
I can now add a signup form on any page of my site using the MailingList view helper:
<?=$this->MailingList()->getForm();?>
I realise a lot of the problems I was facing was down to a very specific set of circumstances, but hopefully this can help some other people out in some way!
Cheers,
Alex