I am a beginner with Codeigniter. This will be my first time to use Ajax. I want only "content" part change when I click the navigation links. I need to learn how to use ajax in my site.
MY_Controller.php :
class MY_Controller extends CI_Controller {
protected $data = array();
function __construct() {
parent::__construct();
}
function render_page($view) {
if( ! $this->input->is_ajax_request() )
{
//do this to don't repeat in all controllers...
$this->load->view('templates/header', $this->data);
//menu_data must contain the structure of the menu...
//you can populate it from database or helper
}
$this->load->view($view, $this->data);
if( ! $this->input->is_ajax_request() )
{
$this->load->view('templates/menu');
$this->load->view('templates/footer', $this->data);
}
}
My home/about controller view function:
public function view($page = 'home')
{
$this->load->helper('text');
$this->data['records']= $this->services_model->getAll();
if ( ! file_exists('application/views/pages/'.$page.'.php'))
{
// Whoops, we don't have a page for that!
show_404();
}
$data['title'] = ucfirst($page); // Capitalize the first letter
$this->render_page('pages/'.$page,$data);
}
I think , I could enable ajax in MY_Controller.php. What to do after this? How shall i enable posts in the view?
Edit : I made some more research about jquery and ajax.
This is my navigation menu part of html :
<div id="sidebar-content">
<ul id="menu">
<li class="current">ANASAYFA</li>
<li>HAKKIMIZDA</li>
......
I have written and ajax.js file in the head section as :
//Navigation
$("#sidebar-content ul li a").click( function(){
$.ajax({
url: "<?php echo site_url('about'); ?>",
type: 'POST';
data: JSON,
success: function(msg) {
$('#content').body(msg);
}
});
});
return false;
});
Can you refine my code ? One more problem is :If I use the ajax in the head part,how can i post different pages as urls?
Your problem is a little ambiguous, but here are some issues I can see with your JQuery:
You have set data: Json in your JQuery, but it looks like you are
returning HTML, so change this to HTML.
You have a semi colon after type: post when it should be just a
comma
The url points to the controller, not the method. Change it to "<?php echo site_url('about/view'); ?>",
There is no such thing as JQuery .body(), you want .html() or the complete line for your success function: $('#content').html(msg);. Obviosult make sure you have a element named id="content".JQuery will then replace this with the reponse from the server, which should be pure html returned from your controller. You can use codeigniters $this->load->view() to return the correct file.
Other notes - it seems you need to read up on JQuery, especially the ajax function
Here's a good tutorial to follow about using Ajax with CI - http://net.tutsplus.com/tutorials/php/codeigniter-from-scratch-day-8-ajax/
Finally, use the console and network features in Chrome's developer tools web inspector or get Firebug for Firefox this way you can see js errors and monitor ajax requests (XHR)
Related
I am having a view with 2 buttons in my codeigniter view:
<div class="btn-main col-md-3 col-md-offset-3">
<button id="simu-mono" type="button" class="btn btn-default">SIMULATION MONO SITE</button>
</div>
<div class="btn-main col-md-3">
<button id="simu-multi" type="button" class="btn btn-default">SIMULATION MULTI SITE</button>
</div>
I would like to call another a controller to launch then a view when the button is clicked
I tried out to call the controller simu_mono by javascript, putted on /controller/simu_mono.php but doesn' t work
$(document).ready(function(){
$("#simu-mono").click(function(){
type:'GET',
url:'simu_mono'
});
$("#simu-multi").click(function(){
});
});
simu_mono.php:
<?php
class simu_mono extends CI_Controller {
public function index()
{
$this->load->view('simu_mono');
echo 'Hello World!';
}
}
?>
Thanks for your helps
Cheers
Please, if u want to redirect only use following code:
$(document).ready(function(){
$("#simu-mono").click(function(){
window.location = base_url + "/simu_mono";
});
$("#simu-multi").click(function(){
window.location = base_url + "/simu_multi";
});
});
Note that you might need base_url, use this snippet to load base_url in JavaScript variable
<script>
base_url = <?= base_url()?>
</script>
put code above in some kind of view that is loaded always (before any other JavaScript code is executed)
Additional step would be to set up routes that take care of ugly underscore symbol (_)
something like:
routes.php
$route['simu-mono'] = "simu_mono";
$route['simu-multi'] = "simu_multi";
this way you go to your page and controller following way: yourserver.ufo/simu-mono and yourserver.ufo/simu-multi
You're not doing any class of AJAX call within your javascript. I assume you're using jQuery, so, your call should be something like:
$("#simu-mono").click(function(){
$.ajax({
url: "http://your-url.com/controller/method",
type: 'post', // <- Or get option, whatever you prefer
dataType: 'json', // <- This is important to manage the answer in the success function
//data: { param1: "value1", param2: "value2"}, <- You could add here any POST params you wanted
success: function(data){
if (data.view) {
$('#here_view').html(data.view); // <- '#here_view' would be the id of the container
}
if (data.error){
console.log(data.error);
}
}
});
});
This will call your method, where you will have to indicate you want to pass the view:
<?php
class simu_mono extends CI_Controller {
public function index()
{
$return = array(
'view' => $this->load->view('simu_mono')
);
echo json_encode( $return );
}
}
?>
json_encode will allow you easily pass vars and data from PHP to your javascript, and manage them in the client view. As you see in the javascript, I added data.error, this is just in case you'll have more logic, maybe change the view you're sending, send an error if you sent data and want to control them, etc.
Of course, in your javascript you could take the url from the clicked button, and in data.view parat of the success function, you may print in the screen a modal, send the view to a container, whatever you wanted, XD
IN codeigniter I am repeatedly using the controllers to load all the templates of my page....
I have divided the page into header, top navigation, left navigation and content and footer.
This is what I do at present
public function get_started() {
if (test_login()) {
$this->load->view('includes/header');
$this->load->view('includes/topnav');
$this->load->view('includes/leftbar');
$this->load->view('login_nav/get_started');
$this->load->view('includes/footer');
} else {
$this->load->view('errors/needlogin');
}
}
Is there any jquery-ajax helpers or plugins in codeigniter which would allow me to keep header footer and topnavigation static and allow me to load specific views using ajax.
thanks in advance..
You can use the constructor to set your static header:
//in your controller
public $data;
function __construct()
{
$this->data['header'] = 'static_header';
$this->data['static_footer'] = 'static_footer';
}
function get_started(){
if (test_login()) {
$this->data['subview'] = 'login_nav/get_started';
} else {
$this->data['subview'] = 'errors/needlogin';
}
$this->load->view('template',$this->data);
}
function get_page(){
$view = $this->load->view('your_dynamic_view','',TRUE);
print json_encode(array('success' => TRUE, 'view' => $view);
}
// in your template.php
<div id="header"><?php echo $this->load->view('header');?></div>
<div id="subview"><?php echo $this->load->view('subview');?></div>
<div id="footer"><?php echo $this->load->view('footer');?></div>
// in your script - used to load dynamic view on you subview div
<script type="text/javascript">
$.get('controller/get_page',{},function(data){
if(data.success){
$('#subview').html(data.view);
}
},'json')
</script>
Message me if there's a problem with my code
Happy coding ---> :D
The answer from PinoyPal is theoreticaly correct, but it didn't work for me in practice because it lacks one major detail: a route.
Take a look at this part of their script:
// in your script - used to load dynamic view on you subview div
<script type="text/javascript">
$.get('controller/get_page',{},function(data){
if(data.success){
$('#subview').html(data.view);
}
},'json')
</script>
Here in place of 'controller/get_page' there should be a url for an actual GET request. This is how it is generally supposed to look:
$("a.your_navigation_element_class").on('click',function(e){
e.preventDefault(); //this is to prevent browser from actually following the link
var url = $(this).attr("href");
$.get(url, {}, function(data){
if (data.success){
$('#subview').html(data.view);
}
},'json')
});
Now here's a question: where will this GET request end up? In the default controller route, that's right. This is why you need to 1) modify your request url and 2) set up a route, so that this request will be passed to an ajax-serving controller. Or just add an ajax-serving function to your default controller and re-route ajax requests to it.
Here follows how it should all look wrapped up
In ...\application\controller\Pages.php:
class Pages extends CI_Controller {
...
public function serve_ajax ($page) {
$view = $this->load->view($page, '', TRUE);
print json_encode( array('success' => TRUE, 'view' => $view);
}
...
}
In ...\application\config\routes.php:
...
$route['ajax/(:any)'] = 'pages/serve_ajax/$1';
On your page:
...
<body>
...
<div id="page"></div>
...
<script>
$("a.navigation").on('click',function(e){
e.preventDefault();
var url = $(this).attr("href");
$.get("/ajax" + url, {}, function(data){
//The trailing slash before "ajax" places it directly above
//the site root, like this: http://yourdomain.com/ajax/url
if (data.success){
$('#page').html(data.view);
}
},'json')
});
</script>
</body>
And you're all set.
i am using $.post() to call a controllers function from view(though i know its bad practice) and in that function i am loading a view and its not working.
this is HTML code : <li id='files' class="active" >My Files</a></li>
this is JS Code :
$("#files").click(function()
{
alert('hi2'); //just for checking
var loadUrl = "/Fast-Docs/index.php/Docs/updatefiles";
$.post(
loadUrl,
{un:"<?php echo $username?>"});
});
this is function in controller:
public function updatefiles()
{
$this->load->model('DocsModel');
$un=$this->input->post('un');
$files=$this->DocsModel->getAllFiles($un);
$data['files']=$files;
$this->load->view('files',$data);
}
You need to actually display your code after the ajax call, ie
$.post(
loadUrl,
{un:"<?php echo $username?>"}
});
Becomes
$.post(
loadUrl,
{un:"<?php echo $username?>"},
function(data) {
$("#yourDiv").html(data);
}
});
It's my first post in here and I haven't yet figured out to format my post properly yet, but here it goes.
So basically I can only get my code to work if i point directly to a php-file. If I try to call a method within my controller, nothing seems to happen.
My JavaScript:
$(document).ready(function() {
$(".guide_button").click(function(){
var id = $(this).text();
var data = {};
data.id = id;
$.getJSON("/guides/hehelol", data, function(response){
$('#test').text(response.id);
});
return false;
});
});
My markup:
<div id="content_pane">
<ul>
<li>RL</li>
<li>LG</li>
<li>RG</li>
<li>SG</li>
<li>GL</li>
<li>MG</li>
</ul>
</div>
<div class="description">
<h3>Description</h3>
<p id="test">This text area will contain a bit of text about the content on this section</p>
</div>
My Controller:
<?php
class Guides extends CI_Controller {
public function Guides()
{
parent::__construct();
$this->load->helper('url');
$this->load->helper('form');
}
public function index()
{
$this->load->view('guides_view');
$title = 'Some title';
}
public function hehelol() //The controller I am desperatly trying to call
{
$id = $_GET['id'];
$arr = array ('id'=>$id);
echo json_encode($arr);
}
}
It might be my controller I have done something wrong with. As it is the code only works if create a hehelol.php file and refer to it directly like this.
$.getJSON("hehelol.php", data, function(response){
$('#test').text(response.id);
});
Anyone who knows what I need to do to make my controller work properly? Help please! :)
i just put your exact code in its entirety in my codeigniter app and it worked for me. Meaning I used this: ...$.getJSON("/guides/hehelol",...
Because you are making a $_GET request, you have to enable query strings.
In your config.php file, make sure this line is set to TRUE:
$config['allow_get_array']= TRUE;
How make Zend_Form submission without reload a page - with Ajax?
This is code for create form that reload a page when submitted, what should be change or add that this form will submit with ajax (1.regular solution 2.jquery solution):
Form:
class Application_Form_Login extends Zend_Form
{
public function init()
{
$username=new Zend_Form_Element_Text('username');
$username ->addFilter('StringToLower')
->addValidator('alnum');
$password=new Zend_Form_Element_Text('password');
$password->addFilter('StringToLower')
->addValidator('alnum');
$submit=new Zend_Form_Element_Submit('submit');
$this->addElements(array($username,$password,$submit));
}
}
Controller:
$form = new Application_Form_Login();
$request = $this->getRequest();
if ($request->isPost()) {
if ($form->isValid($request->getPost())) {
if ($this->_process($form->getValues())) {
//code indside
}
}
}
$this->view->form = $form;
View:
<?
echo $this->form;
?>
My proposal that I don't think is proper(does form make filtering and validation?) for View:
<?
echo $this->form;
?>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$('form').submit(function(){
var sendData=$(this).serialize();
$.ajax(
{
url:'',
dataType:'json',
type:'POST',
data:sendData,
success: function(data) {
}
});
return false;
});
});
</script>
Thanks
Well,
for filtering/validation you might want to send the form using Ajax and by knowing at the server-side that it is an Ajax request (you can use a flag for that, like a header, search for knowing if a request is ajax or not) and sending back only the form 'area'. Then when you receive it you can overwrite it.
There is currently no wiser way to do it with Zend_Form I think.