Question

我有一个带有日期范围过滤器的Datagrid，我有两个日期输入，一个用于＆＃39; fromDate＆＃39;参数和其他用于＆＃39; toDate＆＃39;参数，这允许我显示两个日期之间的数据。

我想在应用任何过滤器之前显示所有数据。数据网格只允许我在应用过滤器时显示数据，或者在插入“日期”时显示数据。参数，否则，当两个参数都为null时，数据网格不会显示任何数据。

我已经读过另一个类似的问题，但它并没有解决我的问题： A single sql query which can handle both null or valued date range in sql server

此外，我还使用了其他类型的过滤器，即使使用null参数也可以正常工作。

脚本：

<script type="text/javascript">

function doSearch(){
    $('#tt').datagrid('load',{
        fromDate: $('#fromDate').val(),
        toDate: $('#toDate').val(),          
    });
}
</script>

HTML：

 <table id="tt" class="easyui-datagrid" style="width:1000px;height:450px"
 url="datagrid24_getdata.php" sortName="id" sortOrder="asc"
 title="Search" iconCls="icon-search" toolbar="#tb" 
 rownumbers="true" pagination="true">
 <thead>
 <tr>
       <th field="id" width="50" sortable="true">ID</th>
       <th field="userName" width="250" sortable="true">Name</th>
       <th field="date" width="100" sortable="true">Date</th>
 </tr>
</thead>
</table>
<div id="tb" style="padding:3px">
<span> Insert filter Parameters:</span>
<!-- DATE RANGE FILTER -->
<input id="fromDate" type="date" style="line-height:26px;border:1px solid #ccc">
<input id="toDate" type="date" style="line-height:26px;border:1px solid #ccc">

<a href="#" class="easyui-linkbutton" plain="true" onclick="doSearch()">Search</a>
</div>

我的PHP datagrid24_getdata.php：

<?php
include 'conectionbd.php';

$page = isset($_POST['page']) ? intval($_POST['page']) : 1;
$rows = isset($_POST['rows']) ? intval($_POST['rows']) : 10;
$sort = isset($_POST['sort']) ? strval($_POST['sort']) : 'id';
$order = isset($_POST['order']) ? strval($_POST['order']) : 'asc';
$offset = ($page-1)*$rows;
$result = array();

//HERE WE FETCH THE VALUES FROM THE FILTER INPUTS
$fromDate= isset($_POST['fromDate']) ? mysql_real_escape_string($_POST['fromDate']) : '';
$toDate= isset($_POST['toDate']) ? mysql_real_escape_string($_POST['toDate']) : '';

//THIS IS THE SQL QUERY I USE FOR THE DATE RANGE FILTER
$where = "date BETWEEN '$fromDate%' AND '$toDate%'";


$rs = mysql_query("select count(*) from table where " . $where);
$row = mysql_fetch_row($rs);
$result["total"] = $row[0];

$rs = mysql_query("select * from table where " . $where . " order by $sort $order limit $offset,$rows");

$items = array();
while($row = mysql_fetch_object($rs)){
array_push($items, $row);
}
$result["rows"] = $items;

echo json_encode($result);?>

我真的很感激任何帮助！

Answer 1

您可以使用以下代码处理日期条件：

$where = '';
if (!empty($fromDate) && !empty($toDate)) {
   $where = "date BETWEEN '$fromDate%' AND '$toDate%'";
} else if(!empty($fromDate)) {
   $where = "date >= '$fromDate%'";
} else if(!empty($toDate)) {
   $where = "date <= '$toDate%'";
}

Answer 2

你可以这样做（我不太了解PHP，所以检查日期值为null的语法可能需要更正）：

//THIS IS THE SQL QUERY I USE FOR THE DATE RANGE FILTER
$where = '';
// check if both the dates are not null
if ($fromDate != null && $toDate != null) {
    $where = "where date BETWEEN '$fromDate%' AND '$toDate%'";
} else if ($fromDate != null) {
    $where = "where date >= '$fromDate%'";
} else if ($toDate != null) {
    $where = "where date <= '$toDate%'"; 
}


$rs = mysql_query("select count(*) from table " . $where);

当日期范围输入为空时显示所有数据

2 个答案: