查看有关选择更改的客户信息

Question

我正在创建一个页面，该页面将允许管理员从下拉列表中选择用户，该下拉列表从数据库中填充。选择此人后，将在页面上查看与该人关联的信息。我已经有一个选择语句，它选择了所有信息，并且下拉菜单正在正确填充。但是，我不确定如何让所选用户的信息在选择后显示在页面上。我是否需要做一个完全不同的选择语句和查询来检查选择了哪个客户？还是有别的办法？

customer.php

<div id="view_form" class="view">
    <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
        <fieldset>
            <label for="viewCustomer">Select Customer</label>
            <?php
                echo "<select name='selectCust' id='selectCust'>";
                echo "<option></option>";
                while($row = mysqli_fetch_assoc($custResult)){
                    $name = "{$row['fName']} {$row['lName']}";
                    echo "<option>$name</option>";
                }
                echo "</select>";
            ?>
        </fieldset>
    </form>
</div>

viewUser.php

if(isset($search)){
    $select = "SELECT * FROM $cust WHERE acctNum='{$search}'";
    $result = mysqli_query($db, $select);
    if(mysqli_num_rows($result) > 0){
        if($row = mysqli_fetch_assoc($result)){
            $acct = "{$row['acctNum']}";
            echo $acct;
        }
    }
}

script.js

$(document).ready(function(){
    function searchAjax(){
        var search = $('#selectCust').val();
        $.post('includes/viewUser.php', {searchUsers: search}, function(data){
            $('#view_form').append(data);
        })
    }       
    $('#selectCust').on('change', function(ev){
        ev.preventDefault();
        searchAjax();
    })
})

Answer 1

搜索.php

    <script type="text/javascript "src="//ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js"></script>

    <script type='text/javascript'>
    $(document).ready(function(){

        $(".dropdown-users").on("change",function(event){
        event.preventDefault();
        search_ajax_way();
        });

    });

    function search_ajax_way(){
        var search_this=$("dropdown-users").val();

        $.post("Ajaxsearch.php", {searchusers : search_this}, function(data){
            $(".results").html(data);   
        })
    }
    </script>

    <div id="view_form" class="view">
        <form method="post">
            <fieldset>
                <label for="viewCustomer">Select Customer</label>
                <?php
                    echo "<select class="dropdown-users">";
                    echo "<option></option>";
                    while($row = mysqli_fetch_assoc($custResult)){
                        $name = "{$row['fName']} {$row['lName']}";
                        $acct = $row['acctNum'];
                        echo "<option value="$acct">$name ($acct)</option>";
                    }
                    echo "</select>";
                ?>
            </fieldset>
        </form>
    </div>



    <label>Enter</label>
    <input type="text" name="search_query" id="search_query" placeholder="What You Are Looking For?" size="50"/>
    <input type="<span id="IL_AD1" class="IL_AD">submit</span>" <span id="IL_AD6" class="IL_AD">value</span>="Search" id="button_find" />

    <div class="results"></div>

//****************************************** ****************************************************** ****************************************************** ************************************************/ /

Ajaxsearch.php

    <?php
    $con = mysqli_connect("localhost","my_user","my_password","my_db"); // Enter your information here
    $term = $_POST['searchusers']
    $term = mysqli_real_escape_string($con, $term);
    if($term == "")
        echo "Enter Something to search";
    else {
        $query = mysqli_query($con, "select * from USERDATEBASEHERE where ID = '{$term}' ");
        $string = '';

        if (mysqli_num_rows($query) > 0) {

            if (($row = mysqli_fetch_assoc($query)) !== false) {
               $string = "{$row['ID']}";
            }

        } else {
            $string = "This Person does not exist";
        }

            echo $string;
    }
    ?>

Answer 2

<div id="view_form" class="view">
    <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
        <fieldset>
            <label for="viewCustomer">Select Customer</label>
            <?php
                echo "<select name=\"somename\" onchange=\"this.form.submit();\">";
                echo "<option value=\"\">Select User</option>";
                while($row = mysqli_fetch_assoc($custResult)){
                    $name = "{$row['fName']} {$row['lName']}";
                    $acct = $row['acctNum'];
                    echo '<option value="'.$acct.'">$name ($acct)</option>';
                }
                echo "</select>";
            ?>
        </fieldset>
    </form>
</div>

options必须有一些引用值，通过它可以检索到选定用户的详细信息，当option的值没有被初始化时，option的默认值就是option的label。