使用PHP查询db，通过AJAX获取结果作为变量，再次使用初始变量的值查询db

时间：2011-05-15 23:20:23

标签： php mysql ajax nested-queries

这一切都在问题中：）

当我把它放在我要做的项目中时，它更清楚了，所以在这里：

  • 我在页面上有两个表单，一个搜索表单和一个“编辑个人资料”表单。两者都处于正常运转状态。
  • 编辑配置文件表单通过我的MySQL tbl的行分页，允许我编辑每列的值。目前设置为包括所有行（即所有存储的配置文件）。
  • 搜索表单采用17个不同的搜索变量中的任何一个，并搜索同一个表以查找个人资料或一组个人资料。
  • 我希望能够输入一个搜索词（例如Name：'Bob'），像我一样查询tbl，但是使用AJAX将结果的唯一ID作为存储在变量中的数组返回。然后我希望能够异步地将该变量提供给我的编辑配置文件表单查询（搜索表单将有一个提交按钮...）所以我现在可以翻阅我表格中的所有行（例如，名称包含'Bob '），只有那些行。

以上是否可以使用相关语言？谁能帮我把它们拼凑起来？

我正处于PHP和MySQL的中间阶段，但对AJAX来说绝对是新手。我只用过它来在一个定义的区域显示一个文本字符串 - 在各处的演示中都可以看到:)因此，非常感谢像对待我一样五岁的人！

以下是我当前的搜索查询和编辑个人资料表单（如果他们有帮助的话）：

编辑个人资料表单：

//pagination base
if (isset($_GET['page'])) { $page = $_GET['page']; }
else { $page = 1; }
$max_results = 1;
$from = (($page * $max_results) - $max_results);

$total_results = mysql_result(mysql_query("SELECT COUNT(*) as Num FROM profiles"),0);
$total_pages = ceil($total_results / $max_results);

echo '<span id="pagination">' . 'Record ' . $page . ' of ' . $total_results . ' Records Returned. ';

if($total_results > $max_results)
{
    if($page > 1)
    { $prev = ($page - 1);
      echo "<a href=\"".$_SERVER['PHP_SELF']."?page=$prev\"><input type='submit' value='&lt;&lt;' /></a>";
    }
    if($page == 1)
    { echo "<input type='submit' value='&lt;&lt;' />"; }
    if($page < $total_pages)
    { $next = ($page + 1);
      echo "<a href=\"".$_SERVER['PHP_SELF']."?page=$next\"><input type='submit' value='&gt;&gt;' /></a>";
    }
    if($page == $total_pages)
    { echo "<input type='submit' value='&gt;&gt;' />";
    }
}
echo '</span></p>';
?>

// the query, currently selecting all but which I would have include a WHERE clause (WHERE ProfileID = $profileid...)

<?php
$sql = ("SELECT * FROM profiles 
    ORDER BY ProfileID 
    LIMIT $from, $max_results");

$rs = mysql_query($sql);

while($row = mysql_fetch_array($rs))
{

$profile = $row['ProfileID'];

?>

<form id="profile-form" action="profile-engine.php" method="post">
    <input type="hidden" name="formid" value="edit-profile">
    <input type="hidden" name="thisprofile" value="<?php echo $profile; ?>">

    <table id="profile-detail" class="profile-form">
    <tr>
        <td>        
    <label for="profile-name">Name:</label>
        <?php
            $nameresult = mysql_query("SELECT ProfileName 
                            FROM profiles 
                            WHERE ProfileID = '$profile'");
            $row = mysql_fetch_array($nameresult);
        ?>
    <input type="text" class="text" name="profile-name" id="profile-name" value="<?php echo $row['ProfileName']; ?>" />
        </td>

//goes on in this vein for another 16 inputs :)

搜索查询：

//connection established        

$query = "SELECT * FROM profiles"; 

$postParameters = array("name","height","gender","class","death","appro","born","tobiano","modifier","adult","birth","sire","dam","breeder","owner","breed","location");
$whereClause = " WHERE 1 = 1";
foreach ($postParameters as $param) {
    if (isset($_POST[$param]) && !empty($_POST[$param])) {
        switch ($param) {
            case "name":
                $whereClause .= " AND ProfileName LIKE '%".$_POST[$param]."%' ";
                break;
            case "height":
                $whereClause .= " AND ProfileHeight='".$_POST[$param]."' ";
                break;
            case "gender":
                $whereClause .= " AND ProfileGenderID='".$_POST[$param]."' ";
                break;
//more cases....
        }
    }
}
$query .= $whereClause;

$result = mysql_query("$query");

$values = array();
while ($row = mysql_fetch_array($result)) {
$values[] =  $row['ProfileID'];
    }
/*  
//just me checking that it worked...
foreach( $values as $value => $id){
    echo "$id <br />";
}
*/


    mysql_close($con);

所以，你有它！在此先感谢您的帮助！

1 个答案:

答案 0 :(得分：0)

怎么样： 搜索将搜索项复制到局部变量，服务返回您持有的结果数组，然后分页使用JS将值放入相应的字段中。如果您更改并保存，则会提交编辑内容，包括用于重新查询服务的原始搜索字词，并返回更新的数组...根据需要重复

这里有一些示例代码（这里只有两个搜索字段，我知道您需要更多代码）：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script type="text/javascript">
var query = new Object();
var resp;
var i;
function next(on){
    i=on+1;
    if(i==resp.results.length){i--;}
    fillForm(i);
}
function prior(on){
    i=on-1;
    if(i<0){i++;}
    fillForm(i);
}

function fillForm(i){   
    document.getElementById("paginate").innerHTML='<button onclick="prior('+i+')">&lt;</button>'+(i+1)+' of '+resp.results.length+'<button onclick="next('+i+')">&gt;</button>';
    document.getElementById("name").value=resp.results[i].name;
    document.getElementById("height").value=resp.results[i].height;
    document.getElementById("gender").value=resp.results[i].gender;
    document.getElementById("class").value=resp.results[i].class;
    document.getElementById("death").value=resp.results[i].death;
    document.getElementById("appro").value=resp.results[i].appro;
    document.getElementById("born").value=resp.results[i].born;
    document.getElementById("tobiano").value=resp.results[i].tobiano;
    document.getElementById("modifier").value=resp.results[i].modifier;
    document.getElementById("adult").value=resp.results[i].adult;
    document.getElementById("birth").value=resp.results[i].birth;
    document.getElementById("sire").value=resp.results[i].sire;
    document.getElementById("dam").value=resp.results[i].dam;
    document.getElementById("breeder").value=resp.results[i].breeder;
    document.getElementById("owner").value=resp.results[i].owner;
    document.getElementById("breed").value=resp.results[i].breed;
    document.getElementById("location").value=resp.results[i].location;
    document.getElementById("id").value=resp.results[i].id;
    document.getElementById("saveButton").innerHTML='<button onclick="save()">Save</button>';
}
function getData(){
    query.name=document.getElementById('query_name').value;
    query.gender=document.getElementById('query_gender').value;
    var variables='';
    variables+='name='+query.name;
    variables+='&gender='+query.gender;
    var xmlhttp;
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    resp = JSON.parse(xmlhttp.responseText);
    fillForm(0);
    }
  }
xmlhttp.open("GET","searchNav.php?"+variables,true);
xmlhttp.send(); 
}

function save(){
    var saving="";
    saving+='?q='+query;
    saving+='&name='+document.getElementById('name').value;
    saving+='&height='+document.getElementById('height').value;
    saving+='&gender='+document.getElementById('gender').value;
    saving+='&class='+document.getElementById('class').value;
    saving+='&death='+document.getElementById('death').value;
    saving+='&appro='+document.getElementById('appro').value;
    saving+='&born='+document.getElementById('born').value;
    saving+='&tobiano='+document.getElementById('tobiano').value;
    saving+='&modifier='+document.getElementById('modifier').value;
    saving+='&adult='+document.getElementById('adult').value;
    saving+='&birth='+document.getElementById('birth').value;
    saving+='&sire='+document.getElementById('sire').value;
    saving+='&dam='+document.getElementById('dam').value;
    saving+='&owner='+document.getElementById('owner').value;
    saving+='&breed='+document.getElementById('breed').value;
    saving+='&breeder='+document.getElementById('breeder').value;
    saving+='&location='+document.getElementById('location').value;
    saving+='&id='+document.getElementById('id').value;
        var xmlhttp;
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    resp = JSON.parse(xmlhttp.responseText);
    fillForm(0);
    }
  }
xmlhttp.open("GET","saveEdits.php"+saving,true);
xmlhttp.send(); 
}
</script>
</head>
<body>
<div id="search">
    <table>
    <tr><td>Name:</td><td><input type="text" id="query_name" /></td></tr>
    <tr><td>Gender:</td><td><input type="text" id="query_gender" /></td></tr></table>
    <button onclick="getData()">Search</button>   
</div>
<div id="results">
    <div id="paginate"></div>
    <input type="hidden" id="id" />
    <table>
    <tr><td>Name:</td><td><input type="text" id="name" /></td></tr>
    <tr><td>Height:</td><td><input type="text" id="height" /></td></tr>
    <tr><td>Gender:</td><td><input type="text" id="gender" /></td></tr>
    <tr><td>Class:</td><td><input type="text" id="class" /></td></tr>
    <tr><td>Death:</td><td><input type="text" id="death" /></td></tr>
    <tr><td>Appro:</td><td><input type="text" id="appro" /></td></tr>
    <tr><td>Born:</td><td><input type="text" id="born" /></td></tr>
    <tr><td>Tobiano:</td><td><input type="text" id="tobiano" /></td></tr>
    <tr><td>Modifier:</td><td><input type="text" id="modifier" /></td></tr>
    <tr><td>Adult:</td><td><input type="text" id="adult" /></td></tr>
    <tr><td>Birth:</td><td><input type="text" id="birth" /></td></tr>
    <tr><td>Sire:</td><td><input type="text" id="sire" /></td></tr>
    <tr><td>Dam:</td><td><input type="text" id="dam" /></td></tr>
    <tr><td>Breeder:</td><td><input type="text" id="breeder" /></td></tr>
    <tr><td>Owner:</td><td><input type="text" id="owner" /></td></tr>
    <tr><td>Breed:</td><td><input type="text" id="breed" /></td></tr>
    <tr><td>Location:</td><td><input type="text" id="location" /></td></tr>
    </table>
    <div id="saveButton"></div>
</div>
</body>
</html>

和搜索：

<?php
//connection established        
$query = "SELECT * FROM profiles"; 
$postParameters = array("name","height","gender","class","death","appro","born","tobiano","modifier","adult","birth","sire","dam","breeder","owner","breed","location");
$whereClause = " WHERE 1 = 1";
foreach ($postParameters as $param) {
    if (isset($_POST[$param]) && !empty($_POST[$param])) {
       $whereClause .= " AND ".$param."='".$_POST[$param]."'";
    }
}
$query .= $whereClause;
$result = mysql_query("$query");
echo "{\"results\":";
if($row = mysql_fetch_array($result,MYSQL_ASSOC)) {
echo "[";
    echo "{\"name\":\"".$row["name"]."\",";
    echo "\"height\":\"".$row["height"]."\",";
    echo "\"gender\":\"".$row["gender"]."\",";
    echo "\"class\":\"".$row["class"]."\",";
    echo "\"death\":\"".$row["death"]."\",";
    echo "\"appro\":\"".$row["appro"]."\",";
    echo "\"born\":\"".$row["born"]."\"";
    echo "\"tobiano\":\"".$row["tobiano"]."\"";
    echo "\"modifier\":\"".$row["modifier"]."\"";
    echo "\"adult\":\"".$row["adult"]."\"";
    echo "\"birth\":\"".$row["birth"]."\"";
    echo "\"sire\":\"".$row["sire"]."\"";
    echo "\"dam\":\"".$row["dam"]."\"";
    echo "\"breeder\":\"".$row["breeder"]."\"";
    echo "\"owner\":\"".$row["owner"]."\"";
    echo "\"breed\":\"".$row["breed"]."\"";
    echo "\"location\":\"".$row["location"]."\"";
    //echo "\"id\":\"".$row["id"]."\"";
    echo "}";
}
else{
echo "\"no\"}";
exit;
}
while($row = mysql_fetch_array($data,MYSQL_ASSOC)){
    echo ",{\"name\":\"".$row["name"]."\",";
    echo "\"height\":\"".$row["height"]."\",";
    echo "\"gender\":\"".$row["gender"]."\",";
    echo "\"class\":\"".$row["class"]."\",";
    echo "\"death\":\"".$row["death"]."\",";
    echo "\"appro\":\"".$row["appro"]."\",";
    echo "\"born\":\"".$row["born"]."\"";
    echo "\"tobiano\":\"".$row["tobiano"]."\"";
    echo "\"modifier\":\"".$row["modifier"]."\"";
    echo "\"adult\":\"".$row["adult"]."\"";
    echo "\"birth\":\"".$row["birth"]."\"";
    echo "\"sire\":\"".$row["sire"]."\"";
    echo "\"dam\":\"".$row["dam"]."\"";
    echo "\"breeder\":\"".$row["breeder"]."\"";
    echo "\"owner\":\"".$row["owner"]."\"";
    echo "\"breed\":\"".$row["breed"]."\"";
    echo "\"location\":\"".$row["location"]."\"";
    //echo "\"id\":\"".$row["id"]."\"";
    echo "}";
}
echo "]}";
?>
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