防止日期和时间插入数据库 [英] Prevent date and time insert to the database
本文介绍了防止日期和时间插入数据库的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试建立预订系统，并且我创建了包含列(ID，办公室名称，房间名称，重新启动，重新发送，重新用户)的表预订.重新启动和重新发送是DATATIME类型.我创建了一个带有日期选择器的表单，并将其成功插入到数据库中.
这是我的PHP文件:
<?php
session_start();
include('includes/config.php');
include('includes/checklogin.php');
check_login();
$username = $_SESSION['username'];
//code for add courses
if($_POST['submit'])
{
$officename=$_POST['officename'];
$roomname=$_POST['roomname'];
$startdate=$_POST['startdate'];
$enddate=$_POST['enddate'];
$query="insert into reservations (officename,roomname,resstart,resend,resuser) values(?,?,?,?,?)";
$stmt = $mysqli->prepare($query);
$stmt->bind_param('sssss',$officename,$roomname,$startdate,$enddate,$username);
if($stmt->execute()){
echo"<script>alert('Your Reservation Has Been Added Successfully');</script>";
}else{
echo"<script>alert('Warning! You cannot Reserve this appointment');</script>";
}
}
?>
<!doctype html>
<html lang="en" class="no-js">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1">
<meta name="description" content="">
<meta name="author" content="">
<meta name="theme-color" content="#3e454c">
<title>Make New Reservation</title>
<link rel="stylesheet" href="css/awesome-bootstrap-checkbox.css">
<link rel="stylesheet" href="css/style.css">
<script type="text/javascript" src="js/jquery-1.11.3-jquery.min.js"></script>
<script type="text/javascript" src="js/validation.min.js"></script>
<!--Load Script and Stylesheet -->
<script type="text/javascript" src="jquery.simple-dtpicker.js"></script>
<link type="text/css" href="jquery.simple-dtpicker.css" rel="stylesheet" />
$(document).ready(function() {
$( "#date" ).datepicker({ dateFormat: "yy-m-d" });
});
</script>
</head>
<body>
<?php include('includes/header.php');?>
<div class="ts-main-content">
<?php include('includes/sidebar.php');?>
<div class="content-wrapper">
<div class="container-fluid">
<div class="row">
<div class="col-md-12">
<h2 class="page-title">Make New Reservation</h2>
<div class="row">
<div class="col-md-12">
<div class="panel panel-default">
<div class="panel-heading">Make New Reservation</div>
<?php echo "<h4>You Logged in As: <span>$username</span></h4>";
?>
<div class="panel-body">
<?php if(isset($_POST['submit']))
{ ?>
<p style="color: red"><?php echo htmlentities($_SESSION['msg']); ?><?php echo htmlentities($_SESSION['msg']=""); ?></p>
<?php } ?>
<form method="post" class="form-horizontal">
<div class="hr-dashed"></div>
<div class="form-group">
<label class="col-sm-2 control-label">Select Office </label>
<div class="col-sm-8">
<Select name="officename" class="form-control" required>
<option value="Select Office">Select Office</option>
<?php
$sql="select * from offices";
$stmt2 = $mysqli->prepare($sql);
//$stmt2->bind_param('i',$roomno);
//$stmt->bind_param('i',$aid);
$stmt2->execute() ;//ok
$res=$stmt2->get_result();
while ($row=$res->fetch_object()) {
echo "<option value=". $row->officename .">" . $row->officename . "</option>";
}
?>
</Select>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">Select Room </label>
<div class="col-sm-8">
<Select name="roomname" class="form-control" required>
<option value="Select Room">Select Room</option>
<?php
$sql="select * from rooms";
$stmt2 = $mysqli->prepare($sql);
//$stmt2->bind_param('i',$roomno);
//$stmt->bind_param('i',$aid);
$stmt2->execute() ;//ok
$res=$stmt2->get_result();
while ($row=$res->fetch_object()) {
echo "<option value=". $row->roomname .">" . $row->roomname . "</option>";
}
?>
</Select>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">Start time and date</label>
<div class="col-sm-8">
<input type="text" autocomplete="off" name="startdate" value="" required>
<script type="text/javascript">
$(function(){
$('*[name=startdate]').appendDtpicker();
});
</script>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">End time and date</label>
<div class="col-sm-8">
<input type="text" autocomplete="off" name="enddate" value="" required>
<script type="text/javascript">
$(function(){
$('*[name=enddate]').appendDtpicker();
});
</script>
</div>
</div>
<div class="col-sm-8 col-sm-offset-2">
<input class="btn btn-primary" type="submit" name="submit" value="Make New Reservation">
</div>
</div>
</form>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
如果有用户试图在同一个房间已有时间的情况下进行新的预订，我希望表格防止插入到表中.就像在1:00到2:00保留房间1一样，因此下一个用户不能在例如1:10到2:00注册房间1，但是他可以同时注册房间2.
谢谢.
解决方案
从表预订中获取带有请求房间号和新预订时间的计数，并查看表中是否存在重新启动和重新发送时间之间的记录./p>
如果我正确理解了您的问题，则以下两个查询中的任何一个都可以正常工作.
select count(1) from reservations where roomname = 'XYZ' and '17-SEP-17' between resstart and resend;
或
select count(1) from reservations where roomname = 'XYZ' and to_date('17-SEP-17') between resstart and resend;
I am trying to make reservations system, and I have created table reservations which contain columns (id, officename, roomname, resstart, resend, resuser). Restart and resend are DATATIME type. I created a form with date picker and it's inserted successfully to the database.
Here is my PHP file:
<?php
session_start();
include('includes/config.php');
include('includes/checklogin.php');
check_login();
$username = $_SESSION['username'];
//code for add courses
if($_POST['submit'])
{
$officename=$_POST['officename'];
$roomname=$_POST['roomname'];
$startdate=$_POST['startdate'];
$enddate=$_POST['enddate'];
$query="insert into reservations (officename,roomname,resstart,resend,resuser) values(?,?,?,?,?)";
$stmt = $mysqli->prepare($query);
$stmt->bind_param('sssss',$officename,$roomname,$startdate,$enddate,$username);
if($stmt->execute()){
echo"<script>alert('Your Reservation Has Been Added Successfully');</script>";
}else{
echo"<script>alert('Warning! You cannot Reserve this appointment');</script>";
}
}
?>
<!doctype html>
<html lang="en" class="no-js">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1">
<meta name="description" content="">
<meta name="author" content="">
<meta name="theme-color" content="#3e454c">
<title>Make New Reservation</title>
<link rel="stylesheet" href="css/awesome-bootstrap-checkbox.css">
<link rel="stylesheet" href="css/style.css">
<script type="text/javascript" src="js/jquery-1.11.3-jquery.min.js"></script>
<script type="text/javascript" src="js/validation.min.js"></script>
<!--Load Script and Stylesheet -->
<script type="text/javascript" src="jquery.simple-dtpicker.js"></script>
<link type="text/css" href="jquery.simple-dtpicker.css" rel="stylesheet" />
$(document).ready(function() {
$( "#date" ).datepicker({ dateFormat: "yy-m-d" });
});
</script>
</head>
<body>
<?php include('includes/header.php');?>
<div class="ts-main-content">
<?php include('includes/sidebar.php');?>
<div class="content-wrapper">
<div class="container-fluid">
<div class="row">
<div class="col-md-12">
<h2 class="page-title">Make New Reservation</h2>
<div class="row">
<div class="col-md-12">
<div class="panel panel-default">
<div class="panel-heading">Make New Reservation</div>
<?php echo "<h4>You Logged in As: <span>$username</span></h4>";
?>
<div class="panel-body">
<?php if(isset($_POST['submit']))
{ ?>
<p style="color: red"><?php echo htmlentities($_SESSION['msg']); ?><?php echo htmlentities($_SESSION['msg']=""); ?></p>
<?php } ?>
<form method="post" class="form-horizontal">
<div class="hr-dashed"></div>
<div class="form-group">
<label class="col-sm-2 control-label">Select Office </label>
<div class="col-sm-8">
<Select name="officename" class="form-control" required>
<option value="Select Office">Select Office</option>
<?php
$sql="select * from offices";
$stmt2 = $mysqli->prepare($sql);
//$stmt2->bind_param('i',$roomno);
//$stmt->bind_param('i',$aid);
$stmt2->execute() ;//ok
$res=$stmt2->get_result();
while ($row=$res->fetch_object()) {
echo "<option value=". $row->officename .">" . $row->officename . "</option>";
}
?>
</Select>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">Select Room </label>
<div class="col-sm-8">
<Select name="roomname" class="form-control" required>
<option value="Select Room">Select Room</option>
<?php
$sql="select * from rooms";
$stmt2 = $mysqli->prepare($sql);
//$stmt2->bind_param('i',$roomno);
//$stmt->bind_param('i',$aid);
$stmt2->execute() ;//ok
$res=$stmt2->get_result();
while ($row=$res->fetch_object()) {
echo "<option value=". $row->roomname .">" . $row->roomname . "</option>";
}
?>
</Select>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">Start time and date</label>
<div class="col-sm-8">
<input type="text" autocomplete="off" name="startdate" value="" required>
<script type="text/javascript">
$(function(){
$('*[name=startdate]').appendDtpicker();
});
</script>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">End time and date</label>
<div class="col-sm-8">
<input type="text" autocomplete="off" name="enddate" value="" required>
<script type="text/javascript">
$(function(){
$('*[name=enddate]').appendDtpicker();
});
</script>
</div>
</div>
<div class="col-sm-8 col-sm-offset-2">
<input class="btn btn-primary" type="submit" name="submit" value="Make New Reservation">
</div>
</div>
</form>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
I want the form to prevent insert to the table, if there is a user tried to make new reservation with already exists time for the same room. Like Room 1 reserved at 1:00 to 2:00, so next user can't register Room 1 at 1:10 to 2:00 for example, but he can register Room 2 at the same time.
Thanks in advance.
解决方案
Take a count from the table reservations with the requesting roomnumber and new reservation time, and see if a record exists in the table between the resstart and resend time.
If I understood your question correctly, any of the below two query should work.
select count(1) from reservations where roomname = 'XYZ' and '17-SEP-17' between resstart and resend;
or
select count(1) from reservations where roomname = 'XYZ' and to_date('17-SEP-17') between resstart and resend;
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