CODEWITHSUNDEEP
javascriptjqueryajaxsymfony
lio89
lio89

Reputation: 115

Working with $_POST from ajax in symfony controller

I'm beginner to symfony. I have a twig template with 2 buttons that calls an external .js that executes an ajax call.

Button 1 calls function 'delete', and this is the js code:

    var path = $("#abc").attr("data-path");
 /*grabs it from some div in the twig template.. <div id="abc" data-path="{{path('delete')}}"></div>*/

    function delete(n){
        $.ajax({
          type: "POST",     
          url: path,
          data: {id : n},
          "success":function(data){
          alert('ok');
          }
          });
    }

Button 2 calls function 'edit' which is the same code except that the 'url' goes to another 'action', and the 'data' is not a json, (it is data: formData)

Routing.yml for function delete is:

    delete:
        pattern:  /delete
        defaults: {_controller: TPMainBundle:Default:delete }

And this is the controller action:

public function deleteAction()
    {
 $id = $_POST['id']; 
 /*other code to work with doctrine making queries to delete from database*/ 
}

(The js code is from a webpage done without symfony and it works fine)

I was told the right way to retrieve the POST in the action, reglardless it was whether a json or formData, was using the same that I used in PHP:

 $id = $_POST['id'];

Here, I have 2 problems.

First, I don't know if this is correct because it doesn't work.

Second, I don't know how can I know if i'm retrieving the POST OK !!

When I did this without symfony, I checked if I was getting the POST with the command 'fwrite', because the ajax went to a PHP file instead of an Action, and then with the command fwrite I created a .txt file with the output of an echo to see if the $_POST was recovered or not.

But here in symfony I don't know how to check it, so I'm driving myself crazy.. trying to implement the solutions I read without being sure if they work..

and with the extra problem that since I'm newbie for me it's a bit confusing trying to install some external bundles for debug. Please help

Upvotes: 2

Views: 1817

Answers (3)

Zain Saqer
Zain Saqer

Reputation: 304

In Symfony you get your POST data from the current Request object (That's how we do it in Symfony), one way to get the current Request object is by adding $request variable as first parameter in your action function.
Your action function could be like this:

public function deleteAction(Request $request)
{
    //check if our POST var is there
    if($request->request->has('id')){
        //it's there
        $id = $request->request->get('id');
        /*other code to work with doctrine making queries to delete from database*/ 
    }else{
        //it's not there!
    }

}

Regarding installing third party bundle, use Composer to do this task for you, and don't forget to add the class path of the installed bundle to $bundles array in AppKernal class. Follow this link to know how to do this.

Upvotes: 0

lio89
lio89

Reputation: 115

Extra tip for people who comes from PHP and doesn't know how to check if they are retrieving the POST or not: - send it to a .php

public function deleteAction($request)
{  
    $id = SOME RETRIEVED CODE YOU AREN'T SURE YOU ARE RETRIEVING THE RIGHT WAY;

/*you can send this variable to a view, symfony allows you to use .php files but you have to name their extension as html.php not just .php*/

return $this->render('TPMainBundle:Default:test.html.php', array('id' => $id));

}

And then, in that view: 

<?php

echo $id;

$myfile = fopen("somename.txt", "w") or die("Unable to open file!");
$txt = 'Id is: '.$id;
fwrite($myfile, $txt);
fclose($myfile);

This will generate a .txt So, you can open the .txt and check if you have recovered the DATA or not!

The file will be located inside the 'web' folder..

The other tips is to check the 'app/log/dev.log' thanks @Zain Saqer

Upvotes: 0

lsouza
lsouza

Reputation: 2488

The correct approach for acessing post or get params is using Symfony's Request object. You can pass it as an argument of a controller action, or retrieve it from the controller directly. Here's two examples:

public function deleteAction(Request $request)
{
    if ($request->isMethod('POST')) {
        $id = $request->get('id');
    }
}

Without passing the Request as a parameter:

public function deleteAction()
{
    if ($this->getRequest()->isMethod('POST')) {
        $id = $this->getRequest()->get('id');
    }
}

Upvotes: 3

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