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Convert Yii1 code to Yii2 (changing language part)

i have a problem. I have a code where i can i change my site language, it's on Yii1
echo CHtml::ajaxLink('EN', array('/'), array(
'type' => 'POST',
'success' => 'js:function(res){window.location.reload();}',
'data' => array(
Yii::app()->request->csrfTokenName => Yii::app()->request->csrfToken,
'_lang' => 'en',
)
), array('class' => 'lang_class'));
Please help me to convert it ti Yii2, i dont get it at all.... cause i'm new at it.
Thank you!!!

Well in Yii2 there isn't ajaxLink anymore. So you can do it like this:
First set your link:
Html::a('Link title', 'javascript:void(0);', ['class' => 'changeLangLink']);
After that set js click event to the button and call your ajax.
$('.changeLangLink').click(function(e){
//do you ajax request
alert('Clicked');
});

Yii2: Get values to update form in modal window

I am using Yii2 modal to update a form in modal window but I am unable to fetch the values to be already filled in the form.
In this screen-shot link below:
http://awesomescreenshot.com/0f957qq367
When I click on edit option, It takes me to the update form which is opened in a modal window. But this form shows empty values in all fields. I want to update the form.
Please find this in this screen-shot below:
http://awesomescreenshot.com/0f257qqscb
This is the snippet for what I have tried yet:
<?php
use yii\bootstrap\Nav;
use yii\bootstrap\Modal;
Modal::begin([
'id'=>'modalEdit',
//'header' => '<h2>Hello world</h2>',
'size'=> 'modal-lg',
//'toggleButton' => ['label' => 'click me'],
]);
$newmodel = new Backlog();
// $newmodel->id;
echo $this->render('/backlog/update', ['model' => $newmodel]);
Modal::end();
echo Nav::widget([
'options' => ['class' => 'nav-pills navbar-right'],
'encodeLabels' => false,
'items' => [
['label' => '', 'items' => [
['label' => '<span data-toggle="modal" data-target="#modalEdit" style="cursor: pointer;">Edit</span>','url' => 'javascript:void(0);'],
'<li class="divider"></li>',
['label' => '<span>Assign</span>', 'url' => ['#']],
'<li class="divider"></li>',
['label' => '<span>Convert To Backlog</span>', 'url' => ['#']],
'<li class="divider"></li>',
['label' => '<span>Close</span>', 'url' => ['#']],
]],
],
]);

if Backlog is an ActiveRecord Replace the Line with this.
$newmodel = Backlog::findOne(['ID'=>$id]);

Finally, I solved the problem using javascript and ajax loading :
$(document).on("click",".edit-backlog",function(e){
var back_l_id=$(this).attr("b-id");
var modal_body=$("#modalEdit").find(".modal-body");
$.ajax({
url:getAjaxUrl('backlog','update'),
data:{'id':back_l_id},
success:function(res){
//console.log(res);
modal_body.html(res);
}
});
});
I added a class .edit-backlog to span and get the id ("b-id") and used in the above script. Hope this answer helps others too.

CakePHP- Using the JsHelper for Ajax Search

Ok, So I am trying to implement sort of a livesearch using the cake's Js Helper. The user will select a criteria to search by, using a drop down, and then tyoe in his search in an input text field. So far, this is what I have.
echo $this->Form->create(false,array('type'=>'post','default'=>false));
echo $this->Form->input('criteria',array(
'label'=>'Search Criteria',
'options' => array(
'id'=> 'By ID',
'name' => 'By Name',
'blood' => 'By Blood Type',
'type' => 'By Donor Type',
'age' => 'By Age',
'gender' => 'By Gender'
)
));
?>
Here is the input:
<?php echo $this->Form->input('query', array('type' => 'text', 'id' => 'query', 'name' => 'query', 'label' => false, 'placeholder' => 'Search')); ?>
<div id="loading" style="display: none; ">
<?php echo $this->Html->image('ajax_clock.gif');?>
</div>
And this is my Js code generated using the helper!
<script type="text/javascript">
<?php
echo $this->Js->get('#query')->event('keyup',$this->Js->request(
array('controller' => 'donors', 'action' => 'search'),
array('update'=>'#results','async' => true,'dataExpression' => true,'method' => 'post','data'=>'$(\'#query,#criteria\').serializeArray()')
),false);
?>
</script>
The above Js should grab the values of the criteria drop down aswell as the value inside the input field , on the keyup event. That said, I thought it was better to encode the data, and found the serializeArray method in the doc, which should do just that (I think..)
Now, my problem is I do not know how to retrieve that serialized data from the action receiving the request. So far I have this
function search() {
if($this->request->is('post')){
$data = $this->request->input('json_decode');
}
}
So basically, I want to know how to access the data from the search action, as well as, I tried to echo the $data variable, and die($data), but I do not know where the debugging info is displayed. Any help regarding both my questions would be MUCH appreciated! thanks!

update form field with js but not showing in submitted data

Experimenting with JsHelper in CakePHP 2.0, I got a Request method to update the value of a form field with the results of an AJAX call - so far, so good. However, on inspecting the form field it says:
<input type="hidden" id="JobsPartUnitcost" name="data[JobsPart][unitcost]">5.55</input>
but when I copied it and first pasted it above it said
<input type="hidden" id="JobsPartUnitcost" name="data[JobsPart][unitcost]"></input>
and when I submitted the form the value was empty. Why is the browser showing the value but the underlying DOM not registering it?
Using Mac/Safari, CakePHP 2.0, JQuery
EDIT
As requested here is form data dump
Array ( [JobsPart] => Array ( [job_id] => 1 [company_id] => 4 [part_id] => 2 [qty] => 3 [unitcost] => ) )
and here is AJAX code
$this->Js->get('#JobsPartPartId')->event('change',
$this->Js->request(
array(
'controller'=>'JobsParts',
'action'=>'getPart'
),
array(
'update'=>'#JobsPartUnitcost',
'async' => true,
'method' => 'post',
'dataExpression'=>true,
'data'=> $this->Js->serializeForm(array(
'isForm' => false,
'inline' => true
))
)
)
);

You need to set the value attribute:
<input type="hidden" value="YOUR VALUE HERE" name="data[Etc][field]" />
You don't wrap a value in input tags.

OK. I have found a workaround and no one else seems to have found a direct solution.
In my static view I now have just <td id="part"></td> where the input field was. My Ajax call now updates '#part' and my dynamic view (the one called by the controller ajax action) now outputs the whole field - <?php echo $this->Form->input('unitcost', array('type' => 'text', 'value' => $part['Part']['costamount'])); ?>. Ugly but it works.

$this->Js->get('#JobsPartPartId')->event('change',
$this->Js->request(
array(
'controller'=>'JobsParts',
'action'=>'getPart'
),
array(
'success'=>'$("#JobsPartUnitcost").val(data)',
'async' => true,
'method' => 'post',
'dataExpression'=>true,
'data'=> $this->Js->serializeForm(array(
'isForm' => false,
'inline' => true
))
)
)
);

Get value of selectbox with JsHelper in CakePHP

I have a select box, and I want to use it to Ajax-update some other content on the page. So I have bound an event handler using the JsHelper (jQuery) like so:
<?php
echo $this->Form->select('car', $cars);
$this->Js->get("#car");
$this->Js->event('change', $this->Js->request(array(
'controller' => 'cars',
'action' => 'view',
???,
array('async' => true, 'update' => '#car-view', 'evalScripts' => true),
true
));
?>
But how can I get the value of the select box to send as an argument to the cars controller (at "???" in the code above)?
I could do everything in javascript, but is there any way to do this in cake?

To be honest, I struggled with this a while back. I couldn't find anything that worked, so I ended up just going the straight javascript route.

I think you are looking for this:
$this->Js->get('#selectbboxid1')->event('change',
$this->Js->request(array(
'action' => 'function'), array(
/*'before' => 'showLoader();',
'success' => 'hideLoader();',*/
'update' => '#selectboxid2',
'dataExpression'=>TRUE,
'method'=>'POST',
'async'=>TRUE,
'data' => $js->serializeForm(array('isForm' => TRUE, 'inline' => TRUE)) )));