我正在为公司建立培训矩阵系统,我有三个表,一个用于员工,一个用于当前的证书,另一个用于输入记录。
我设法创建了将数据插入员工和证书的表格,但是当尝试创建用于学习的表格时,我碰壁了。
学习表仅使用int和date,我希望学习记录的表单更加用户友好。
目前,我可以使用这些表单元素
certificateid
employeeid
datepassed
dateelapsed
我想添加certificatename
/ employeename
,它们将在带有LIKE子句的查询中。我已经尝试过了,但是没有得到想要的结果,因为我无法获得将结果传递给查询的表单框。
请帮助或指向正确的方向。
我尝试在查询中创建一个变量,然后将其绑定到该变量并添加到表单文本名称中,但似乎并不能接受。
<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);
// user always
session_start();
// Redirect if not logged in
if (!isset($_SESSION['loggedin'])) {
header('Location: index.html');
exit();
}
//include Header & db Connection
include ("templates/header.php");
require ("connect-db.php");
if(isset($_POST['AddLearn'])){
//Retrieve the field values from our learning form.
$CertificateID = !empty($_POST['CertificateID']) ? trim($_POST['CertificateID']) : null;
$CertificateName = !empty($_POST['CertificateName']) ? trim($_POST['CertificateName']) : null;
$EmployeeID = !empty($_POST['EmployeeID']) ? trim($_POST['EmployeeID']) : null;
$Name = !empty($_POST['Name']) ? trim($_POST['Name']) : null;
$DatePassed = !empty($_POST['DatePassed']) ? trim($_POST['DatePassed']) : null;
$DateElapsed = !empty($_POST['DateElapsed']) ? trim($_POST['DateElapsed']) : null;
$sql = "INSERT INTO learning (CertificateID, EmployeeID, DatePassed, DateElapsed) VALUES (:CertificateID, :EmployeeID, :DatePassed, :DateElapsed)";
$sql2 = "SELECT EmployeeID FROM employee WHERE Name Like '%$Name%' ";
$sql3 = "SELECT CertificateID FROM certificate WHERE CertificateName LIKE '%$CertificateName%' ";
$stmt = $dbCon->prepare($sql);
$stmt2 = $dbCon->prepare($sql2);
$stmt3 = $dbCon->prepare($sql3);
//Bind our variables.
$stmt->bindValue(':CertificateID', $CertificateID);
$stmt->bindValue(':EmployeeID', $EmployeeID);
$stmt->bindValue(':DatePassed', $DatePassed);
$stmt->bindValue(':DateElapsed', $DateElapsed);
//secondry binds for stmt2-3
$stmt2->bindValue(':Name', $Name);
$stmt3->bindValue(':CertificateName', $CertificateName);
//Execute the statement
$result = $stmt->execute();
$result2 = $stmt2->execute();
$result3 = $stmt3->execute();
//If the process is successful.
if($result){
echo 'Record Added';
}else
{
echo 'No record was added due to mistakes';
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Add New Learning Record</title>
</head>
<body>
<div class="adding">
<h1>Add New learning Record</h1><br>
<form action="newlearn.php" method="post">
<label for="CertificateID">Certificate ID</label>
<input type="text" id="CertificateID" name="CertificateID"><br>
<label for="CertificateName">Certificate Name</label>
<input type="text" id="CertificateNameID" name="CertificateNameID"><br>
<label for="EmployeeID">Employee ID</label>
<input type="text" id="EmployeeID" name="EmployeeID"><br>
<label for="Name">Name</label>
<input type="text" id="NameID" name="NameID"><br>
<label for="DatePassed">Date Passed</label><center>(Date in YYYY.MM.DD)</center>
<input type="text" id="DatePassed" name="DatePassed"><br>
<label for="DateElapsed">Date Elapsed</label><center>(Date in YYYY.MM.DD)</center>
<input type="text" id="DateElapsed" name="DateElapsed"><br>
<input type="submit" name="AddLearn" value="Add New Record"></button>
</form>
</div>
</html>
我希望通过从两个相关表中抓取数据,使用like子句来生成Employee ID和证书ID。
答案 0 :(得分:1)
您的代码中有一些问题需要我们加以研究:
我将只选择其中一个SQL查询,但其余查询同样适用:
$sql2 = "SELECT EmployeeID FROM employee WHERE Name Like '%$Name%' ";
// ...
$stmt2->bindValue(':Name', $Name);
Named placeholders的形式应为::Name
,因此您的查询应如下所示(通配符使它不太直观):
$sql2 = "SELECT EmployeeID FROM employee WHERE Name Like CONCAT('%', :Name, '%')";
$sql2 = "SELECT EmployeeID FROM employee WHERE Name Like LIKE CONCAT('%', :Name, '%')";
$stmt2->bindValue(':Name', $Name);
$result2 = $stmt2->execute();
您执行语句,但不要在代码中的任何地方使用结果。相反,您将获取一行并将其显示在表单中的某个位置:
if ($stmt2->rowCount() > 0) {
$row= $stmt2->fetch(PDO::FETCH_ASSOC);
$employeeId= $row['EmployeeID'];
}
也请在示例行中指出:
$DatePassed = !empty($_POST['DatePassed']) ? trim($_POST['DatePassed']) : null;
// ...
$sql = "INSERT INTO learning (CertificateID, EmployeeID, DatePassed, DateElapsed) VALUES (:CertificateID, :EmployeeID, :DatePassed, :DateElapsed)";
$stmt = $dbCon->prepare($sql);
$stmt->bindValue(':DatePassed', $DatePassed);
$result = $stmt->execute();
如果数据库表“学习”允许在字段中插入NULL,则可能会创建许多错误的行,这些行在“ CertificateID”,“ EmployeeID”等字段中包含NULL值。 相反,我建议:
if (empty($_POST['CertificateID'] || empty($_POST['EmployeeID']) || empty($_POST['DatePassed'])) {
print "Mandatory fields are missing. Please try again.";
} else {
// continue with inserting data.
}
我还想知道为什么您需要使用LIKE条款而不是检查是否相等?与其让用户手动输入员工姓名,不如创建一个包含员工姓名的SELECT,然后使用WHERE Name = :Name
。这样更加用户友好。
您的表格目前有多余-最好说容易出错-字段:证书ID和名称/员工ID和名称。如果有人输入的证书ID与证书名称不符,则数据库中的数据不正确。取而代之的是,您将使用选择列表。
首先,为您的SELECT加载所需的数据:
$sqlEmployees = "SELECT EmployeeID, Name FROM employee ORDER BY name";
$stmtEmployees = $dbCon->prepare($sql2);
$arrEmployees= array();
if ($stmtEmployees->execute()) {
$arrEmployees = $stmtEmployees->fetchAll(PDO::FETCH_ASSOC);
}
$sqlCertificates = "SELECT CertificateID, CertificateName FROM certificate ORDER BY CertificateName";
$stmtCertificates = $dbCon->prepare($sql2);
$arrCertificates= array();
if ($stmtCertificates->execute()) {
$arrCertificates = $stmtCertificates->fetchAll(PDO::FETCH_ASSOC);
}
然后,在删除多余字段的同时,将值作为表单的一部分输出:
<form action="newlearn.php" method="post">
<label for="CertificateID">Certificate</label>
<select name="CertificateID" id="CertificateID">
<?php
for($i=0;$i<count($arrCertificates);$i++) {
$row= $arrCertificates[$i];
?>
<option value="<?= $row['CertificateID'] ?>"><?= $row['CertificateName'] ?></option>
<?php
}
?>
</select>
<label for="EmployeeID">Employee</label>
<select name="EmployeeID" id="EmployeeID">
<?php
for($i=0;$i<count($arrEmployees);$i++) {
$row= $arrEmployees[$i];
?>
<option value="<?= $row['EmployeeID'] ?>"><?= $row['Name'] ?></option>
<?php
}
?>
</select>
<label for="DatePassed">Date Passed</label><center>(Date in YYYY.MM.DD)</center>
<input type="text" id="DatePassed" name="DatePassed"><br>
<label for="DateElapsed">Date Elapsed</label><center>(Date in YYYY.MM.DD)</center>
<input type="text" id="DateElapsed" name="DateElapsed"><br>
<input type="submit" name="AddLearn" value="Add New Record"></button>
</form>