We can have a full control on what is done at server side when we save the data.
It is well known that the post can be successful, but the same saving to the database can be not.
To control that we can use a callback function when data is saving to the server.
The function accept one parameter - data returned from the server. Depending on this data
the function should return true or false. When true this means the saving is done and false othewise.
In our case the save is missing, since the server return nothing.
HTML
...
<table id="rowed4" class="scroll" cellpadding="0" cellspacing="0"></table>
<div id="prowed4" class="scroll" style="text-align:center;"></div>
<br />
<input type="BUTTON" id="ed4" value="Edit row 13" />
<input type="BUTTON" id="sved4" disabled='true' value="Save row 13" />
<script src="rowedex4.js" type="text/javascript"> </script>
Java Scrpt code
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jQuery("#rowed4").jqGrid({
url:'server.php?q=2',
datatype: "json",
colNames:['Inv No','Date', 'Client', 'Amount','Tax','Total','Notes'],
colModel:[
{name:'id',index:'id', width:55},
{name:'invdate',index:'invdate', width:90, editable:true},
{name:'name',index:'name', width:100,editable:true},
{name:'amount',index:'amount', width:80, align:"right",editable:true},
{name:'tax',index:'tax', width:80, align:"right",editable:true},
{name:'total',index:'total', width:80,align:"right",editable:true},
{name:'note',index:'note', width:150, sortable:false,editable:true}
],
rowNum:10,
rowList:[10,20,30],
imgpath: gridimgpath,
pager: jQuery('#prowed4'),
sortname: 'id',
viewrecords: true,
sortorder: "desc",
editurl: "server.php",
caption: "Full control"
});
jQuery("#ed4").click( function() {
jQuery("#rowed4").editRow("13");
this.disabled = 'true';
jQuery("#sved4").attr("disabled",false);
});
jQuery("#sved4").click( function() {
jQuery("#rowed4").saveRow("13", checksave);
jQuery("#sved4").attr("disabled",true);
jQuery("#ed4").attr("disabled",false);
});
function checksave(result) {
if (result=="") {alert("Update is missing!"); return false;}
return true;
}
PHP with MySQL
...
$page = $_GET['page']; // get the requested page
$limit = $_GET['rows']; // get how many rows we want to have into the grid
$sidx = $_GET['sidx']; // get index row - i.e. user click to sort
$sord = $_GET['sord']; // get the direction
if(!$sidx) $sidx =1;
// connect to the database
$db = mysql_connect($dbhost, $dbuser, $dbpassword)
or die("Connection Error: " . mysql_error());
mysql_select_db($database) or die("Error conecting to db.");
$result = mysql_query("SELECT COUNT(*) AS count FROM invheader a, clients b WHERE a.client_id=b.client_id");
$row = mysql_fetch_array($result,MYSQL_ASSOC);
$count = $row['count'];
if( $count >0 ) {
$total_pages = ceil($count/$limit);
} else {
$total_pages = 0;
}
if ($page > $total_pages) $page=$total_pages;
$start = $limit*$page - $limit; // do not put $limit*($page - 1)
$SQL = "SELECT a.id, a.invdate, b.name, a.amount,a.tax,a.total,a.note FROM invheader a, clients b WHERE a.client_id=b.client_id ORDER BY $sidx $sord LIMIT $start , $limit";
$result = mysql_query( $SQL ) or die("Couldn t execute query.".mysql_error());
$responce->page = $page;
$responce->total = $total_pages;
$responce->records = $count;
$i=0;
while($row = mysql_fetch_array($result,MYSQL_ASSOC)) {
$responce->rows[$i]['id']=$row[id];
$responce->rows[$i]['cell']=array($row[id],$row[invdate],$row[name],$row[amount],$row[tax],$row[total],$row[note]);
$i++;
}
echo json_encode($responce);
...