jQuery Grid Plugin - jqGrid

<?php

ini_set("display_errors","1");

require_once 'common.php';
require_once 'jq-config.php';
// include the jqGrid Class
require_once "php/jqGrid.php";
// include the PDO driver class
require_once "php/jqGridPdo.php";
// Connection to the server
$conn = new PDO(DB_DSN,DB_USER,DB_PASSWORD);
// Tell the db that we use utf-8
$conn->query("SET NAMES utf8");

// Create the jqGrid instance
$grid = new jqGridRender($conn);
$grid->debug = true;
// Show the server errors at client
$grid->showError = true;

// Write the SQL Query
$grid->SelectCommand = 'SELECT component.id, component.type, user.name FROM component,user WHERE component.provider_id = user.id';

// set the ouput format to json
$grid->dataType = 'json';
// Set the table to where you add the data
$grid->table = 'component';

// Set the url from where we obtain the data
$grid->setUrl('question.php');
$grid->cacheCount = true;

// Set grid caption using the option caption
$grid->setGridOptions(array(
    "caption"=>"join",
    "rowNum"=>10,
    "sortname"=>"id",
    "hoverrows"=>true,
    "rowList"=>array(10,20,50),
    'shrinkToFit' => true,
    'width' => 700,
    ));

// Change the col model
$model = array(array(NAME => 'id',
                     LABEL => 'ID',
                     WIDTH => 60,
                     EDITABLE => false),
               array(NAME => 'type',
                     LABEL => 'Article'),
               array(NAME => 'name',
                     LABEL => 'Fournisseur',
                     WIDTH => 160));
$grid->setColModel($model);

// The primary key should be entered
$grid->setColProperty('id', array("editrules" => array("required" => true)));

// Enable navigator
$grid->navigator = true;

// Use a dropdown for picking a component type
$grid->setSelect('type',
                 'SELECT id, type FROM component GROUP BY type',
                 false);        // do not connect the key value with 'type'
// Use a dropdown for picking a user name
$grid->setSelect('name',
                 'SELECT id, name FROM user GROUP BY name',
                 false);        // do not connect the key value with 'name'

// Enable only adding
$grid->setNavOptions('navigator',
                     array("excel" => false,
                           "add" => true,
                           "edit" => true,
                           "del" => true,
                           "view" => false,
                           "search" => false));
// Close the dialog after the record is added
$grid->setNavOptions('add',
                     array("closeAfterAdd" => true,
                           "reloadAfterSubmit" => true)
                     );

// Enjoy
$grid->renderGrid('#question','#question_pager',true, null, null, true,true);
$conn = null;
?>

SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`mydb`.`component`, CONSTRAINT `component_ibfk_1` FOREIGN KEY (`provider_id`) REFERENCES `user` (`id`))

Array
(
    [0] => Array
        (
            [time] => 2011-04-18 12:23:27
            [query] => SELECT * FROM component WHERE 1=2
            [data] =>
            [types] =>
            [fields] =>
            [primary] =>
            [input] =>
        )

    [1] => Array
        (
            [time] => 2011-04-18 12:23:27
            [query] => INSERT INTO component (type) VALUES( ?)
            [data] => Array
                (
                    [0] => 2
                )

            [types] => Array
                (
                    [0] => string
                )

            [fields] => Array
                (
                    [id] => Array
                        (
                            [type] => int
                        )

                    [provider_id] => Array
                        (
                            [type] => int
                        )

                    [type] => Array
                        (
                            [type] => string
                        )

                    [size_gender_id] => Array
                        (
                            [type] => int
                        )

                    [color_id] => Array
                        (
                            [type] => int
                        )

                    [quantity] => Array
                        (
                            [type] => int
                        )

                )

            [primary] => id
            [input] => Array
                (
                    [type] => 2
                    [name] => 11
                    [oper] => add
                )

        )

)