CODEWITHSUNDEEP
javascriptphpjqueryajaxcodeigniter
Daniel ORTIZ
Daniel ORTIZ

Reputation: 2520

Call Php controller function with AJAX Codeigniter

I , im working with Ajax and Codeigniter to call function client-server

the php

public function mainViewClean() {


        unset($_SESSION[$this::jsondevices]);
        unset($_SESSION[$this::jsontags]);
       return "Ready";
    }
//route $route['cleantags']       = 'user/mainViewClean';

And ajax:

<script type="text/javascript">
    $(document).ready(function(){
        $("#btn_recargar").button().click(function(){

            //window.location.href = "<?= base_url('home')?>";
             $.ajax({
                type:'POST',
                url:'<?php echo base_url("cleantags"); ?>',
                data:{'id':100},
                success:function(data){
                 //window.location.href = "<?= base_url('home')?>";
                    alert(data);
                }
            });

   });
});
</script>

The function excuse good , but javascript don't show any data , what im doing wrong?

Upvotes: 1

Views: 1514

Answers (3)

nivanmorgan
nivanmorgan

Reputation: 149

I'm fairly new as I only have been using AJAX , but I think your code has a few syntactical errors.

  • data: { id:100 } with no quotations around id.

I advise you need to look at more examples of ajax calls to fix these little errors.

You said your JS is working but not showing data?

Upvotes: 0

Norlihazmey Ghazali
Norlihazmey Ghazali

Reputation: 9060

Change return into :

echo "Ready";

If you're sending an array, at server side you need to json_encode, example :

// encode array into json string format
echo json_encode( array( 'name' => 'Osman' ) );

And in Js, you have 2 options, the 1st solution is :

success : function ( data ) {
   // data now is coming in this form { "name" : "osman" }
   // as the string data is coming from server-side
   // you must parse it back into Javascript object
   var newData = JSON.parse( data );
}

And the 2nd option is, add dataType properties inside ajax properties like following :

$.ajax({
  ...
  dataType : 'json', // with this, no need to write JSON.parse()
  ...
});

Upvotes: 1

Akshay Hegde
Akshay Hegde

Reputation: 16997

Well, the ajax call reads the response from the server, and that response must be rendered as some type of readable data, such as application/json or text/html.

In order to write that data, you need to echo it from the server with PHP.

The return statement doesn't write data, it simply returns at the server level.

If you want to communicate between PHP functions, you have to use return. But if you want to output some data, you have to use echo

Client side

$.ajax({
             url:'<?php echo base_url("cleantags"); ?>',
             dataType: 'application/json',
             success:function(response)
             {
                  alert(response.foo);
             }
      })

Server Side 

public function mainViewClean() 
   {
        unset($_SESSION[$this::jsondevices]);
        unset($_SESSION[$this::jsontags]);
        echo json_encode( array("foo"=>"Ready"));
   }

Upvotes: 2

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