Hi I’m working on processing data in datatbale using serverside processing. I’ve managed to show the data in the table but I haven’t fully understood how it works with searches, I’ve included the code in the php file I request, but when I search for something with a where clause in the query it stil shows other values as well, this is my code for request.php
// storing request (ie, get/post) global array to a variable
$requestData = filter_var_array($_REQUEST);
$columns = array(
// datatable column index => database column name
0 => 'user_first',
1 => 'user_last',
2 => 'user_email',
);
// getting total number records without any search
$sql = "SELECT user_id, user_first, user_last, user_email, user_role";
$sql .=" FROM users WHERE user_role='partner'";
$query= mysqli_query($conn, $sql);
$totalData = mysqli_num_rows($query);
$totalFiltered = $totalData; // when there is no search parameter then total number rows = total number filtered rows.
if( !empty($requestData['search']['value']) ) {
// if there is a search parameter
$sql = "SELECT user_first, user_last, user_email";
$sql.=" FROM users WHERE user_role='partner'";
$sql.=" AND user_first LIKE '".$requestData['search']['value']."%' "; // $requestData['search']['value'] contains search parameter
$sql.=" OR user_last LIKE '".$requestData['search']['value']."%' ";
$sql.=" OR user_email LIKE '".$requestData['search']['value']."%' ";
$query=mysqli_query($conn, $sql);
$totalFiltered = mysqli_num_rows($query); // when there is a search parameter then we have to modify total number filtered rows as per search result without limit in the query
$sql.=" ORDER BY ". $columns[$requestData['order'][0]['column']]." ".$requestData['order'][0]['dir']." LIMIT ".$requestData['start']." ,".$requestData['length']." "; // $requestData['order'][0]['column'] contains colmun index, $requestData['order'][0]['dir'] contains order such as asc/desc , $requestData['start'] contains start row number ,$requestData['length'] contains limit length.
$query=mysqli_query($conn, $sql); // again run query with limit
} else {
$sql = "SELECT user_first, user_last, user_email";
$sql.=" FROM users WHERE user_role='partner'";
$sql.=" ORDER BY ". $columns[$requestData['order'][0]['column']]." ".$requestData['order'][0]['dir']." LIMIT ".$requestData['start']." ,".$requestData['length']." ";
$query=mysqli_query($conn, $sql);
}
$data = array();
while( $row=mysqli_fetch_array($query) ) { // preparing an array
// Query al database per ottenere i gruppi a cui appartengono i condomini
$query_group_id = mysqli_prepare($conn, "SELECT group_name, group_id FROM user_group_join LEFT OUTER JOIN user_group ON user_group_join . group_join_id = user_group . group_id WHERE user_join_id = ?");
mysqli_stmt_bind_param($query_group_id, 'i', $row["user_id"]);
mysqli_stmt_execute($query_group_id);
mysqli_stmt_store_result($query_group_id);
mysqli_stmt_bind_result($query_group_id, $group_names, $group_ids);
$response=array();
while (mysqli_stmt_fetch($query_group_id)){
$response[]=$group_names;
}
$nestedData=array();
$nestedData[] = '<b><a onclick="ViewPartnerDetail('.$row["user_id"].')">'.ucfirst($row["user_first"]).' '.ucfirst($row["user_last"]).'</a></b>';
$nestedData[] = $row["user_email"];
$nestedData[] = '<select class="bs-select form-control show-menu-arrow"><option>'.implode("<option>",$response).'</option></select>';
$nestedData[] = '<button onclick="GetPartnerDetail('.$row["user_id"].')" class="btn btn-sm blue center"> <i class="fa fa-pencil-square-o"></i></button>';
$nestedData[] = '<button onclick="DeletePartner('.$row["user_id"].')" class="btn btn-sm red"> <i class="fa fa-trash-o"></i></button>';
$data[] = $nestedData;
}
$json_data = array(
"draw" => intval( $requestData['draw'] ), // for every request/draw by clientside , they send a number as a parameter, when they recieve a response/data they first check the draw number, so we are sending same number in draw.
"recordsTotal" => intval( $totalData ), // total number of records
"recordsFiltered" => intval( $totalFiltered ), // total number of records after searching, if there is no searching then totalFiltered = totalData
"data" => $data // total data array
);
echo json_encode($json_data); // send data as json format
