我正在使用php，一些javascript和sql server 2008进行调度项目。用户可以使用作业表单来更新预定作业。可以更改的字段包括：作业编号，开始时间，结束时间，描述和作业状态。 sql需要在更新之前测试所有这些内容。
我已经坚持了两天，并且已经多方向去解决这些问题。这就是我目前所拥有的：
<?php
include_once("../php/functions.php");
$conn = connect();
$params = array
(
$jobNum = $_POST['jobNum'],
$asset = $_POST['drp_asset'],
$jobStatus = $_POST['drp_status'],
$sDate = $_POST['startTime'],
$eDate = $_POST['endTime'],
$department = $_POST['drp_department'],
$descrip = $_POST['txtarea_description'],
$job = $_POST['jobid'],
$asset2 = $_POST['drp_asset']
);
/********************************************
Check to see if the delete button was pressed
And if the pre-check warning was confirmed
delete the record.
********************************************/
if (isset($_POST['updateDelete']))
{
$tsql = "Delete from Calendar_view
where JobID = '$job'";
$stmt = sqlsrv_query($conn, $tsql);
if ($stmt)
{
checkRows($stmt);
returnTo($conn);
}
else
{
errMsg();
}
}
/****************************************
If the times and/or asset have not changed
update the job status
****************************************/
else
{
$tsql_check ="select StartTime, EndTime, Asset
from Calendar_View
where '$sDate' = StartTime and '$eDate' = EndTime and '$asset' = Asset";
$stmt = sqlsrv_query($conn, $tsql_check);
$rows = sqlsrv_has_rows($stmt);
if($stmt)
{
if ($rows === true)
{
updateJobStatus($conn, $params);
}
else
{
timeChanges($conn, $params);
}
}
}
function checkOverlaps($conn, $params)
{
$sDate = $params[3];
//$sDate = new DateTime($params[4]);
//$sDate = date_format($sDate,'Y-m-d G:i:s');
$eDate = $params[4];
//$eDate = new DateTime($params[5]);
//$eDate = date_format($eDate,'Y-m-d G:i:s');
$asset = $params[1];
$tsql_check ="select StartTime, EndTime
from Calendar_View
where (('$sDate' < EndTime and '$sDate' >= StartTime) or ('$eDate' < EndTime and '$eDate' > StartTime)) and '$asset' = Asset";
$stmt = sqlsrv_query($conn, $tsql_check);
if ($stmt)
{
// If there is a match, there will be an overlap
$rows = sqlsrv_has_rows($stmt);
if ($rows === true)
{
checkRows($stmt);
}
//If there is no match then job is being moved
//to an open spot
else
{
updateJob($conn, $params);
}
}
}
/************************************
If the start time or end time have changed
/***********************************/
function timeChanges($conn, $params)
{
$sDate = $params[3];
$eDate = $params[4];
$asset = $params[1];
$tsql_timeCheck ="select StartTime, EndTime
from Calendar_View
where (('$sDate' <= StartTime) or ('$eDate' <= EndTime)) and '$asset' = Asset";
$stmt2 = sqlsrv_query($conn, $tsql_timeCheck);
if ($stmt2 == true)
{
$rows = sqlsrv_has_rows($stmt2);
if ($rows === true)
{
updateJobStatus($conn, $params);
//updateJobStatus($conn, $params);
}
else
{
checkOverlaps($conn, $params);
}
}
}
function updateJob($conn, $params)
{
$tsql = "UPDATE Calendar_View
SET JobNum = ?,
Asset = ?,
JobStatus =?,
StartTime =?,
EndTime =?,
Department = ?,
Description = ?
WHERE JobID = ?";
$stmt = sqlsrv_query($conn, $tsql, $params);
if ($stmt)
{
checkRows($stmt);
returnTo($conn);
}
else
{
errMsg();
}
}
/***************************************
Update job status
****************************************/
function updateJobStatus($conn, $params)
{
$tsql = "UPDATE Calendar_View
SET JobNum = ?,
Asset = ?,
JobStatus =?,
StartTime =?,
EndTime =?,
Department = ?,
Description = ?
WHERE JobID = ? and Asset = ?";
$stmt = sqlsrv_query($conn, $tsql, $params);
if ($stmt)
{
checkRows($stmt);
returnTo($conn);
}
else
{
errMsg();
}
}
/**********************************
Return user to scheduling page they
were working on.
***********************************/
function returnTo($conn)
{
sqlsrv_close($conn);
echo "<meta http-equiv='refresh' content='1;URL=../pages/schedule2.php' />";
}
function errMsg()
{
die( print_r(sqlsrv_errors(), true));
exit;
}
/*************************************
Check if any rows were altered by the
query. If so alert success, else alert
that there was a conflict (nothing done)
**************************************/
function checkRows($stmt)
{
$rows_affected = sqlsrv_rows_affected($stmt);
if ($rows_affected > 0)
{
echo "Job updated successfully!<br>";
}
else
echo "There was a scheduling conflict.";
echo "<meta http-equiv='refresh' content='2;URL=../pages/schedule2.php' />";
}
?>
非常感谢任何和所有帮助！
答案 0 :(得分：1)
我看到很多查询来检查一切是否正常......你也可以使用这种方法：
首先创建一个映射数组，如下所示：
Array( 'key1' => 'val1',
'key2' => 'val2',
'key3' => 'val3',
'key4' => 'val4');
确保将帖子变量放在此结构中
确保对数据库中与映射对应的所有字段执行查询，并将它们放入相同结构的新实例中
使用array_diff_assoc比较差异
如果时间上有不同的内容，请执行一些逻辑（可能是查询数据库）以查看日期是否匹配
如果你需要帮助来实现这个想法，我可以帮助你，但先为自己尝试一些事情;）
答案 1 :(得分：0)
在找到更有效的解决方案之前，您可以在事务中进行更改，然后查询数据库以查看是否有任何条件失败。如果他们这样做，你可以回滚。
我想要非常小心，你应该查询更新前后的失败次数，如果失败则回滚。这样，您可以确定您的更改是引入错误的更改。
答案 2 :(得分：0)
以下解决方案用于检查计划中的所有重叠。
<?php
include_once("../php/functions.php");
$conn = connect();
$controlDate1 = date_format(new DateTime($_POST['pickedDate']),'Y-m-d H:i:s');
$controlDate2 = date_format(new DateTime($_POST['pickedDate']),'Y-m-d 23:59:00');
$jobNum = $_POST['jobNum'];
$asset = $_POST['drp_asset'];
$jobStatus = $_POST['drp_status'];
$sDate = date_format(new DateTime($_POST['startTime']),'Y-m-d H:i:s');
$eDate = date_format(new DateTime($_POST['endTime']),'Y-m-d H:i:s');
$descrip = $_POST['txtarea_description'];
$job = $_POST['jobid'];
/*****************************************************
used for testing purposes
******************************************************
$checkVals = array(
$controlDate1 = $controlDate1,
$controlDate2 = $controlDate2,
$jobNum = $_POST['jobNum'],
$asset = $_POST['drp_asset'],
$jobStatus = $_POST['drp_status'],
$sDate = $sDate,
$eDate = $eDate,
$descrip = $_POST['txtarea_description'],
$job = $_POST['jobid'],
);
/***************************************************/
/********************************************
Check to see if the delete button was pressed
And if the pre-check warning was confirmed
delete the record.
********************************************/
if (isset($_POST['updateDelete']))
{
$tsql = "Delete from Calendar_view
where JobID = '$job'";
$stmt = sqlsrv_query($conn, $tsql);
if ($stmt)
{
checkRows($stmt);
returnTo($conn);
}
else
{
errMsg();
}
}
/****************************************
If the times and/or asset have not changed
update the job status, description
****************************************/
else
{
$tsql_check ="SELECT JobNum, StartTime, EndTime, Description, Asset, JobStatus, JobID
from Calendar_View
where JobID = '$job' and JobNum = '$jobNum' and StartTime = '$sDate' and EndTime = '$eDate' and Asset = '$asset'";
$stmt = sqlsrv_query($conn, $tsql_check);
$rows = sqlsrv_has_rows($stmt);
if($stmt)
{
if ($rows === true)
{
$params = array($jobStatus,$descrip, $job, $asset);
updateJobStatus($conn, $params);
}
else
{
$tsql_check ="SELECT JobNum, StartTime, EndTime, Description, Asset, JobStatus, JobID
from Calendar_View
where (JobID != '$job' and
(StartTime < '$controlDate2' and StartTime > '$controlDate1') and
(('$sDate' < EndTime and '$sDate' >= StartTime) or ('$eDate' < EndTime and '$eDate' > StartTime) or ('$sDate' < StartTime and '$eDate' > EndTime)))
and Asset = '$asset'";
$stmt = sqlsrv_query($conn, $tsql_check);
$rows = sqlsrv_has_rows($stmt);
if($stmt)
{
if ($rows === true)
{
checkRows($stmt);
}
else
{
//pass values to updateJob()
$params = array($jobNum,
$asset,
$jobStatus,
$sDate,
$eDate,
$descrip,
$job);
updateJob($conn, $params);
}
}
}
}
}
function updateJob($conn, $params)
{
$tsql = "UPDATE Calendar_View
SET JobNum = ?,
Asset = ?,
JobStatus =?,
StartTime =?,
EndTime =?,
Description = ?
WHERE JobID = ?";
$stmt = sqlsrv_query($conn, $tsql, $params);
if ($stmt)
{
checkRows($stmt);
returnTo($conn);
}
else
{
errMsg();
}
}
/***************************************
Update job status
****************************************/
function updateJobStatus($conn, $params)
{
$tsql = "UPDATE Calendar_View
SET JobStatus =?,
Description = ?
WHERE JobID = ? and Asset = ?";
$stmt = sqlsrv_query($conn, $tsql, $params);
if ($stmt)
{
checkRows($stmt);
returnTo($conn);
}
else
{
errMsg();
}
}
/**********************************
Return user to scheduling page they
were working on.
***********************************/
function returnTo($conn)
{
sqlsrv_close($conn);
echo "<meta http-equiv='refresh' content='1;URL=../pages/schedule2.php' />";
}
function errMsg()
{
die( print_r(sqlsrv_errors(), true));
exit;
}
/*************************************
Check if any rows were altered by the
query. If so alert success, else alert
that there was a conflict (nothing done)
**************************************/
function checkRows($stmt)
{
$rows_affected = sqlsrv_rows_affected($stmt);
if ($rows_affected > 0)
{
echo "Job updated successfully!<br>";
}
else
{
echo "There was a scheduling conflict.";
}
echo "<meta http-equiv='refresh' content='2;URL=../pages/schedule2.php' />";
}
?>