fdn2/private/lib/gui/DatatablesHelper.php

<?php
/*
Author: 		Riccardo Di Dato
Creation Date:	14/gen/2016
*/

class DatatablesHelper {
	private static $instCount = 0;
	
	public static function getResult($useModel,$permissionFlagRequired, array $exposedModel){
		$ret = new stdClass();
		$ret->draw = $_POST["draw"];
		$ret->recordsTotal = 0;
		$ret->recordsFiltered = 0;
		$ret->data = array();
		
		if (AdminLoginManager::isLogged()){
			$admin = AdminLoginManager::getLogged();
			if ($admin->hasRole($permissionFlagRequired)){
				$dao = GlobalVariables::get("dao");
				$filter = array();
		
				$options = array('limit'=>$_POST["length"], 'skip'=>$_POST["start"]);
				if (sizeof($_POST["order"])>0){
					foreach ($_POST["order"] as $details){
						$key = $_POST["columns"][$details["column"]]["data"];
						$options["sort"][$key] = strcasecmp($details["dir"], "asc")==0?1:-1;
					}
				}
		
				$models = $dao->query($useModel, $filter, $options);
		
				if (sizeof($models)>0){
					foreach ($models as $model){
						$result = self::getObjectFromFieldsArray($model, $exposedModel);
						
						$ret->data[] = $result;
					}
				}
				$ret->recordsTotal = $dao->count($useModel);
				$ret->recordsFiltered = $dao->count($useModel,$filter);
			}
		}
		return $ret;
	}
	
	private static function getObjectFromFieldsArray($obj,array $fieldArr){
		$rval = new stdClass();
		if (sizeof($fieldArr)>0){
			foreach ($fieldArr as $key=>$val){
				if (is_array($val)){
					$rval->$key = self::getObjectFromFieldsArray($obj->$key, $val);
				}
				else {
					$rval->$key = $obj->$key;
				}
			}
		}
		return $rval;
	}
	
	public static function generateTable($backendPage, array $columns, array $htmlOpts = array()){
		$tabId = "datatable_".self::$instCount;
		$toolbarClass = "toolbar_".self::$instCount++;
		
		$buttonDiv = "";
		$buttonJS = "";
		$useButtons = false;
		if (array_key_exists("buttons",$htmlOpts) && is_array($htmlOpts["buttons"]) && sizeof($htmlOpts["buttons"])>0){
			$useButtons = true;
			$i = 0;
			foreach ($htmlOpts["buttons"] as $buttonData){
				$buttonDiv.='<span id="'.$tabId."btn".$i.'" class="'.$buttonData["icon"].'" >&nbsp;</span>';
				$buttonJs.='$("#'.$tabId."btn".$i.'").click(function(){'.
						'if ($("tr.selected").length>0){'.
						'var useForm = $("div.' . $toolbarClass . ' form");'.
						'useForm.attr("action","'.$buttonData["page"].'").find("input").val($("tr.selected td:last-child").html());'.
						'useForm.submit();'.
						'}'.
				'});';
			}
			$buttonDiv.='<form action="" style="display:none;"><input type="hidden" name="id" value=""/></form>';
		}
		
		
		$columns[] = array("label"=>"id","data"=>"id");
		
		$colLabels = "<tr>";
		$jsCols = array();
		foreach ($columns as $col){
			$colLabels.= '<th>'.$col["label"].'</th>';
			
			$jsCols[]= '{"data":"'.$col["data"].'"}';
		}
		$colLabels.= '</tr>';
		
		echo '<table id="'.$tabId.'"><thead>'.$colLabels.'</thead><tfoot>'.$colLabels.'</tfoot><tbody></tbody></table>';
		
		?>
		<script type="text/javascript">
			$(document).ready(function(){
				var dTab = $("#<?php echo $tabId;?>").DataTable({
					<?php echo ($useButtons)?'"dom":"<\''.$toolbarClass.'\'>frtip",'."\n":"";?>
					"language": {"url": "<?php echo GUIHandler::getJavascriptsUrl();?>datatables.ita.lang"},
					"processing": true,
		        	"serverSide": true,
		        	"ajax": {
		        		"url": "<?php echo GUIHandler::getBaseUrl();?>admin/tablesBackends/<?php echo $backendPage; ?>",
						"type": "POST"
		        	},
		        	"columns": [ <?php echo implode(",", $jsCols);?> ],
		        	"initComplete": function () {
		        		$("div.<?php echo $toolbarClass;?>").html('<?php echo $buttonDiv;?>');
		        		<?php echo $buttonJs;?>
		        	},
		        	"columnDefs": [
		        		{"className":"hidden","targets":[<?php echo sizeof($columns)-1;?>]}
		        	]
		        });
				$('#<?php echo $tabId;?> tbody').on( 'click', 'tr', function () {
			        if ( $(this).hasClass('selected') ) {
			            $(this).removeClass('selected');
			        }
			        else {
			        	dTab.$('tr.selected').removeClass('selected');
			            $(this).addClass('selected');
			        }
			    });
			});
		</script>
		
		<?php 
		$details = array();
		$details["toolbarClass"] = $toolbarClass;
		$details["tableId"] = $tabId;
		return $details;
	}
	
}

?>