Sending Object Data from AJAX to PHP

Question

I'm trying to send data to a php file to save in database, but I don't have any response. If a checkbox is check, the [obj][idCheckbox] = 1, else [obj][idCheckbox] = 0.

File that sends

    var i=0;
    var objetoTodasPermissoes = function(){};

    var objTodasPermissoes = new objetoTodasPermissoes();

    $.each($(".classePermissoes"), function(){
      objTodasPermissoes[$(this)[0].id] = 0
      i++;
    });


    $.each($(".classePermissoes:checked"), function(){
        alert('ok');
        objTodasPermissoes[$(this)[0].id] = 1;
    });

    console.log(objTodasPermissoes);

    $.each($("#userList tr"),function(){
        alert(this.id);
        var iduser = this.id;
    $.ajax({
            url:'../json/usuarioperm/savePermissions.php',
            data:({
            idusuario:iduser,
            objTodasPermissoes:objTodasPermissoes,
            }),
            success:function(a){
            Alert("Saved!");
            }
    });
    });
}

the savePermissions.php file.

        $iduser = $_POST["iduser"];

        $perm_usuarios = $_POST["objTodasPermissoes"]["perm_usuarios"];
        $perm_importar = $_POST["objTodasPermissoes"]["perm_importar"];
        $perm_log = $_POST["objTodasPermissoes"]["perm_log"];
        $perm_proto = $_POST["objTodasPermissoes"]["perm_proto"];
        $perm_limpeza = $_POST["objTodasPermissoes"]["perm_limpeza"];
        $perm_lixeira = $_POST["objTodasPermissoes"]["perm_lixeira"];
        $perm_relatusuarios = $_POST["objTodasPermissoes"]["perm_relatusuarios"];
        $perm_deptos = $_POST["objTodasPermissoes"]["perm_deptos"];
        $perm_deptospastas = $_POST["objTodasPermissoes"]["perm_deptospastas"];
        $perm_empresas = $_POST["objTodasPermissoes"]["perm_empresas"];



        mysql_query("UPDATE hospital.users set 
        perm_usuarios=".$perm_usuarios.",
        perm_importar=".$perm_importar.",
        perm_log=".$perm_log.",
        perm_proto=".$perm_proto.",
        perm_limpeza=".$perm_limpeza.",
        perm_lixeira=".$perm_lixeira.",
        perm_relatusuarios=".$perm_relatusuarios.",
        perm_deptos=".$perm_deptos.",
        perm_deptospastas=".$perm_deptospastas.",
        perm_empresas=".$perm_empresas." where id=".$iduser) or die (mysql_error());

Thank you.

remove the brackets around the object which sent from ajax; , data:{} not data:({}) — hassan
– hassan, Commented Mar 8, 2017 at 17:08
what's the output of print_r($_POST); ? and be careful, your code is so vulnerable to sql injection ! and mysql_* has been deprecated and your must stop using it — hassan
– hassan, Commented Mar 8, 2017 at 17:17
if you run echo ini_get('enable_post_data_reading') does it return false (or blank/0)? if so, you could try to set enable_post_data_reading=true in php.ini (unless you don't have permissions to do so) — Sᴀᴍ Onᴇᴌᴀ
– Sᴀᴍ Onᴇᴌᴀ, Commented Mar 13, 2017 at 21:26

John Pavek · Accepted Answer · 2017-03-08 17:24:16Z

2

PHP is kind of interesting in that it doesn't pull from $_POST like other forms when Ajax is involved. You actually will need to read the input from php://input

Here is a tiny example

$data = file_get_contents("php://input");
$response = json_decode($data, true ); // True converts to array; blank converts to object

$emailAddr = $response["email"];

Hopefully you can apply that successfully.

Edit: You can add the filter_var command to strip bad characters and sanitize the input.

$emailAddr = filter_var($response["email"], FILTER_SANITIZE_EMAIL);
$firstName = filter_var($response["firstName"], FILTER_SANITIZE_STRING);

While debugging this I would highly recommend using Chrome's Developer mode with the 'network' tab. Find your ajax call near the bottom and you can view exact header info.

answered Mar 8, 2017 at 17:24

John Pavek

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Sᴀᴍ Onᴇᴌᴀ Over a year ago

It might actually be a form encoding issue (see this answer) or if enable_post_data_reading=false in php.ini then $_POST will be empty (see php.net/manual/en/ini.core.php#ini.enable-post-data-reading) - So your claim "PHP is kind of interesting in that it doesn't pull from $_POST like other forms when Ajax is involved" might not always be true

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