Question

我有两张桌子一个是tbl_votes，另一个是tbl_candidates

sid包含候选人及其总票数的信息。 userid是候选人的id | partyid | positionid | sid | votecount ------------------------------------------- 1 | 1 | 1 | 444 | 0 2 | 2 | 1 | 555 | 0 3 | 1 | 2 | 666 | 0 4 | 2 | 2 | 777 | 0。

tbl_votes

id | partyid | positionid | sid | voterid ------------------------------------------- 1 | 1 | 1 | 444 | 1111 2 | 1 | 2 | 666 | 1111 3 | 1 | 1 | 444 | 2222 4 | 1 | 2 | 666 | 2222包含投票数。

tbl_votes

那么可以计算votecount中每个候选（sid）的行数并更新tbl_candidates上的id | partyid | positionid | sid | votecount ------------------------------------------- 1 | 1 | 1 | 444 | 2 2 | 2 | 1 | 555 | 0 3 | 1 | 2 | 666 | 2 4 | 2 | 2 | 777 | 0 ON PAGE LOAD吗？

结果有望像

        <div class="content">
<?php
$sql = "SELECT count(id) as id1 FROM tbl_positions";
$result = $DBcon->query($sql);
if ($result->num_rows > 0) {
  // output data of each row
  while($row = $result->fetch_assoc()) {
 $id1=$row["id1"];
    }

} else {

}

?>
<?php
$sql = "SELECT count(id) as id2 FROM tbl_votes where userid='$usersid'";
$result = $DBcon->query($sql);
if ($result->num_rows > 0) {
  // output data of each row
  while($row = $result->fetch_assoc()) {
     $id2=$row["id2"];
    }

} else {

}
?>

                <div class="container-fluid">
              <div class="card">
                    <div class="card-header" data-background-color="purple">
                        <h4 class="title">Ballot</h4>
                        <p class="category">Select one each position.</p>
                    </div>
                    <div class="card-content">
                <form method="post" action="vote.php"             enctype="multipart/form-data">



            <?php 
$sql = "SELECT * FROM tbl_positions";
$result = $DBcon->query($sql);
if ($result->num_rows > 0) {

  while($row = $result->fetch_assoc()) {
 $pospos=$row["position"];
 $posid=$row["id"];


  ?>

  <div class="col-lg-4 col-md-12">
                        <div class="card">
                            <div class="card-header" data-background-color="    <?php 
 if ($posid % 3 == 0) {
echo "red";
} elseif ($posid % 2 == 0) {
echo "green";
}else{
 echo "orange";
}                               ?>">
                                <h4 class="title"><?php echo $pospos;?></h4>
                                <p class="category">New employees on 15th     September, 2016</p>
                            </div>
                            <div class="card-content table-responsive">
                                <table class="table table-hover">
                                    <thead class="text-warning">
                                      <th></th>
                                      <th></th>
                                      <th>Photo</th>
                                        <th>Name</th>
                                        <th>Partylist</th>

                                    </thead>
                                    <tbody>


                                                    <?php 
$sql2 = "SELECT u.*,p.*,d.*,c.*
        FROM tbl_users u
        JOIN tbl_candidates c on c.sid = u.sid
        JOIN tbl_party p on c.partyid = p.id
        JOIN tbl_positions d on c.positionid = d.id
        WHERE c.status='1' AND d.id='$posid'
        ";
$result2 = $DBcon->query($sql2);
if ($result2->num_rows > 0) {

  while($row2 = $result2->fetch_assoc()) {
 $csid=$row2["sid"];
 $fn=$row2["firstname"];
 $ln=$row2["lastname"];
 $cpar=$row2["partyname"];
 $cimage=$row2["image"];
 $vc1=$row2["votecount"];
 $vc2=$vc1+1;

?>

<tr>
<td><input type="number" name="voted" value="<?php echo $vc2; ?>"/></td>
<td><input type="radio" value="<?php echo $csid; ?>" name="<?php echo     $posid; ?>" required></td>
<td>
<ul class="enlarge"> 
<li>
<img style="width:30px;height:30px;border-radius:100%;"     src="candidateimages/<?php echo $cimage; ?>">
<span> <!--span contains the popup image-->
<img style="width:200px;height:200px;border-radius:100%;" src="candidateimages/<?php echo $cimage; ?>" /> <!--popup image-->

</span>
</li>
</ul>
</td><td><?php echo $fn; ?> <?php echo $ln; ?></td>
    <td><?php echo $cpar; ?></td></tr>
    <?php }?>
    <?php
       if (isset($_POST['submitvote'])){
     $please=$_POST[$posid];
     $please2=$_POST["voted"];

     if ($id1>$id2){


         $sql = "INSERT INTO tbl_votes (sid,posid,userid,date,time)
VALUES ('$please','$posid','$usersid','$date','$time')";

     if ($DBcon->query($sql) === TRUE) {

     $sql = "UPDATE tbl_candidates SET votecount='$please2' WHERE sid='$csid' AND     positionid='$posid'";
     if ($DBcon->query($sql) === TRUE) {

      $sql = "UPDATE tbl_users SET votestatus='1' WHERE sid='$usersid'";
     if ($DBcon->query($sql) === TRUE) {    
      echo'<script>window.location="vote.php?success";</script>';
     } else {
     }
     } else {
     }





     } else {

     }

     }


  }
 ?>

   <?php

} else {
  echo "<td></td><td>No candidates</td>";
} 

  ?>



                                    </tbody>
                                </table>
                            </div>
                        </div>
                    </div>


 <?php
    }

} else {
  echo "No Positions";
} ?>



                <button type="submit" name="submitvote" class="btn btn-info pull-right">Submit</button>




                 </form>    
            </div>
            </div>
            </div>
        </div>

我已经尝试了很多种查询，但是当我失败时它们很愚蠢。

另外

我试图在注册投票时更新tbl_votes中的投票数。失败，所以我试图在页面加载上udpate投票计数。这是我的代码。

{{1}}

我的代码存在的问题是错误的值正在更新到tbl_votes中......是否也可以使用此方法？

Answer 1

使用此查询

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdn.datatables.net/1.10.10/js/jquery.dataTables.min.js"></script>
<link href="https://cdn.datatables.net/1.10.10/css/jquery.dataTables.min.css" rel="stylesheet"/>
<table id="tbl_jaar">
  <thead>
    <tr>
      <th>Places</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>1st</td>
    </tr>
    <tr>
      <td>2nd</td>
    </tr>    
    <tr>
      <td>3rd</td>     
    </tr>   
    <tr>
      <td>4th</td>
    </tr>
    <tr>
      <td>5th</td>
    </tr>
    <tr>
      <td>6th</td>
    </tr>
    <tr>
      <td>7th</td>
    </tr>
    <tr>
      <td>8th</td>
    </tr>
    <tr>
      <td>9th</td>
    </tr>
    <tr>
      <td>10th</td>
    </tr>
  </tbody>
</table>

自动计数行并将结果更新到另一个表

1 个答案: