PHPで私のページングでページ2をクリックしたときに、フィルタリングされていないクエリに戻ります

Question

結果がフィルタリングされていない場合、ページネーションはうまく動作します。しかし、チェックボックスで何かを確認した後、たとえば2ページに行くと、クエリは元の状態に戻り、フィルタされていないクエリがあるページにリダイレクトされます。ここで

は私のコードです：あなたはその後、例えば2ページに移動する]チェックボックスで何かをチェックしたら

<?php 
    require("functions.php"); 
    require_once './class.PaginationLinks.php'; 
    $dbconn = dbconn(); 
    $printTable = true; 
    $page = 1; 

    if(isset($_POST["submit"])){ 

     if(isset($_POST["Kitchen"])){ 
      $arguments1[] = "Kitchen"; 
     } 
     if (isset($_POST["Common_CR"])) { 
      $arguments1[] = "Common CR"; 
     } 
     if (isset($_POST["CR_per_room"])) { 
      $arguments1[] = "CR per room"; 
     } 
     if (isset($_POST["WiFi"])) { 
      $arguments1[] = "WiFi"; 
     } 
     if (isset($_POST["Lobby"])) { 
      $arguments1[] = "Lobby"; 
     } 
     if (isset($_POST["Laundry_Area"])) { 
      $arguments1[] = "Laundry Area "; 
     } 
     if (isset($_POST["Fire_Extinguisher"])) { 
      $arguments1[] = "Fire Extinguisher"; 
     } 
     if (isset($_POST["Water_Pump"])) { 
      $arguments1[] = "Water Pump"; 
     } 
     if (isset($_POST["Dirty_Kitchen"])) { 
      $arguments1[] = "Dirty Kitchen"; 
     } 
     if (isset($_POST["Television"])) { 
      $arguments1[] = "Television"; 
     } 
     if (isset($_POST["Emergency_Lights"])) { 
      $arguments1[] = "Emergency Lights"; 
     } 
     if (isset($_POST["Canteen"])) { 
      $arguments1[] = "Canteen"; 
     } 
     if (isset($_POST["Water_Dispenser"])) { 
      $arguments1[] = "Water Cooler"; 
     } 
     if (isset($_POST["Rooftop_Gazebo"])) { 
      $arguments1[] = "Rooftop Gazebo"; 
     } 
     if(!empty($_POST['loc'])){ 
      $selectedRadio = $_POST['loc']; 
      if($selectedRadio == "dorm"){ 
       $area = "dorm.location = 'dormArea'"; 
      } 
      elseif($selectedRadio=="banwa"){ 
       $area = "dorm.location = 'banwa'"; 
      } 
      else{} 
     } 


     if(!empty($arguments1) && empty($selectedRadio)) { 

      $size = count($arguments1); 

      $query = "SELECT dorm.DormId, dorm.DormName, CONCAT(address.StreetName,', ', address.Barangay),owner.Name, dorm.HousingType, dorm.thumbnailpic 
       FROM dorm, address,owner 
       WHERE dorm.AddressId = address.AddressId 
       AND dorm.OwnerId = owner.OwnerId 
       AND dorm.DormId IN (SELECT all_facilities.DormId 
       FROM all_facilities 
       WHERE all_facilities.facilityName IN ('".implode("','",$arguments1)."') 
       GROUP BY all_facilities.DormId 
       HAVING COUNT(all_facilities.facilityNo)>= $size)"; 

       unset($arguments1); 
     } 
     elseif (!empty($arguments1) && !empty($selectedRadio)) { 
      echo "both checkbox and radio are not empty"; 
      $size = count($arguments1); 
      $query = "SELECT dorm.DormId, dorm.DormName, CONCAT(address.StreetName,', ', address.Barangay),owner.Name, dorm.HousingType, dorm.thumbnailpic 
       FROM dorm, address,owner 
       WHERE dorm.AddressId = address.AddressId 
       AND dorm.OwnerId = owner.OwnerId 
       AND $area 
       AND dorm.DormId IN (SELECT all_facilities.DormId 
       FROM all_facilities 
       WHERE all_facilities.facilityName IN ('".implode("','",$arguments1)."') 
       GROUP BY all_facilities.DormId 
       HAVING COUNT(all_facilities.facilityNo)>= $size)"; 

       $selectedRadio=''; 

       unset($arguments1); 

      } 
     elseif(empty($arguments1) && !empty($selectedRadio)){ 
      echo "empty checkbox but RADIO IS ON!"; 
      $query = "SELECT dorm.DormId,dorm.DormName, CONCAT(address.streetName,', ',address.Barangay), owner.Name, dorm.HousingType, dorm.thumbnailpic 
       FROM dorm, address, owner 
       WHERE dorm.AddressId = address.AddressId AND dorm.OwnerId = owner.OwnerId AND $area"; 

      $selectedRadio=''; 
     } 
     else{ 
      echo "both empty"; 
      $query = "SELECT dorm.DormID, dorm.DormName, CONCAT(address.streetName,', ',address.Barangay), owner.Name, dorm.HousingType, dorm.thumbnailpic 
       FROM dorm, address, owner 
       WHERE dorm.AddressId = address.AddressId AND dorm.OwnerId = owner.OwnerId"; 
     } 
    } 
    else{ 

     $query = "SELECT dorm.DormId,dorm.DormName, CONCAT(address.streetName,', ',address.Barangay), owner.Name, dorm.HousingType, dorm.thumbnailpic 
       FROM dorm, address, owner 
       WHERE dorm.AddressId = address.AddressId AND dorm.OwnerId = owner.OwnerId"; 

    } 

if(isset($_POST['find'])){ 
    $key = $_POST['keyword']; 
    $query = "SELECT dorm.DormId,dorm.DormName, CONCAT(address.streetName,', ',address.Barangay), owner.Name, dorm.HousingType, dorm.thumbnailpic 
       FROM dorm, address, owner 
       WHERE dorm.AddressId = address.AddressId AND dorm.OwnerId = owner.OwnerId AND dorm.DormId in (SELECT dorm.DormId 
       FROM dorm 
       WHERE dorm.DormName LIKE '%$key%') "; 

} 


$result = mysqli_query($dbconn,$query); 


if(mysqli_num_rows($result)==0){ 
    $printTable = false; 
} 

?> 
<!DOCTYPE html> 
<html> 
<head> <title>DorMe</title> </head> 

<style type="text/css"> 
    #pagination > li{ 
     display: inline-block; 
    } 

</style> 

<body> 
<form method="post"> 
    <input type="text" name="keyword"> 
    <input type="submit" name="find" value="SEARCH"> 
</form> 
<div id="header"> 
    <h1>Welcome to DorMe!</h1> 
</div> 
<?php 

     $start = 0; 
     $lim = 4; 

     if(isset($_GET['page'])){ 
      $page = $_GET['page']; 
      $start = ($page-1) * $lim; 
     } 
     else{ 
      $page = 1; 
     } 

     $countQuery = mysqli_affected_rows($dbconn); 
     $countQuery = ceil($countQuery/$lim); 

     $query = $query . " LIMIT $start, $lim"; 
     $res = mysqli_query($dbconn, $query); 

?> 


<div id="content"> 
    <div id="filter"> 
    <form method="post"> 
    <fieldset> 
     <legend>Filter:</legend> 
     <input type="checkbox" name="Kitchen">Kitchen 
     <input type="checkbox" name="Common_CR">Common CR 
     <input type="checkbox" name="CR_per_room">CR per room 
     <input type="checkbox" name="WiFi">WiFi 
     <input type="checkbox" name="Lobby">Lobby 
     <input type="checkbox" name="Laundry_Area">Laundry Area 
     <input type="checkbox" name="Fire_Extinguisher">Fire Extinguisher 
     <input type="checkbox" name="Water_Pump">Water Pump 
     <input type="checkbox" name="Dirty_Kitchen">Dirty Kitchen 
     <input type="checkbox" name="Television">Television 
     <input type="checkbox" name="Emergency_Lights">Emergency Lights 
     <input type="checkbox" name="Canteen">Canteen 
     <input type="checkbox" name="Water_Dispenser">Water Dispenser 
     <input type="checkbox" name="Rooftop_Gazebo">Rooftop Gazebo 
     <input type="radio" name="loc" value="dorm">Dorm Area 
     <input type="radio" name="loc" value="banwa"> Banwa 
     <input type="submit" name="submit" value="Filter"> 
    </fieldset> 
    </form> 
    </div> 



    <div id="table"> 
    <?php 
    if(!$printTable){ 
     ?> 
     <p>No results in database found!</p> 
    <?php 
    }else{ 
     ?> 
    <table border="1"> 
     <thead> 
      <th>Picture</th> 
      <th>Information</th> 
     </thead> 
     <?php 
      while(list($DormId, $estName, $address,$owner,$housingType, $thumbnailpic)=mysqli_fetch_row($res)){ 
     ?> 
     <tr> 
      <td rowspan="4"><img src="<?=$thumbnailpic?>" style="max-width: 50%; max-height: 50%;"></td> 
      <td><label>Establishment Name: </label><a href="viewdorm.php?ID=<?=$dormid?>"><?=$estName?></a></td> 
     </tr> 
     <tr> 
      <td><label>Address: </label><?=$address?></td> 
     </tr> 
     <tr> 
      <td><label>Owner: </label><?=$owner?></td> 
     </tr> 
     <tr> 
      <td><label>Housing Type: </label><?=determine($housingType)?></td> 
     </tr> 
     <?php 
     } 
} ?> 
    </table> 
    </div> 

<!-- PAGINATION QUERY --> 

    <ul id = "pagination"> 
    <?php 
// if($filt != 1){ 
    if($countQuery > 1){ 
     if($page>1){ ?> 
      <li><a href="?page=<?php echo ($page-1)?>">&laquo;</a></li> 
    <?php } 

      for($x = 1; $x <= $countQuery; $x++){ 
      if($x == $page){ ?> 
       <li><a class="current" href="?page=<?php echo $x?>"><?=$x?></a></li> 
    <?php 
      } 
      else{ ?> 
       <li><a href="?page=<?php echo $x?>"><?=$x?></a></li> 
<?php  } 
     } 

     if($page!=$countQuery){ ?> 
      <li><a href="?page=<?php echo ($page+1)?>">&raquo;</a></li> 
<?php } 
    } elseif ($countQuery < 1) { 
      ?> 
      <p> No match found! </p> 
      <?php } ?> 

    </ul> 

</div> 
<?php 
mysqli_close($dbconn); 
?> 
</body> 
</html> 

Answer 1

...、クエリが元に戻って変更され、ページにリダイレクトフィルタリングされていないクエリを使用します。

問題はpostメソッドのためです。あなたはページネーションリンクをヒットし、2ページ目になると、

<form method="post"> 
       ^^^^ <== see the post method here 
<fieldset> 
    <legend>Filter:</legend> 
    <input type="checkbox" name="Kitchen">Kitchen 
    ... 
</fieldset> 
</form> 

ここを参照してください、$_POSTデータは保持されません。

<form method="get"> 
    ... 
</form> 

その後、代わりに$_POSTの、あなたはこのように、$_GETスーパーグローバルを使用してフォーム要素を処理する必要があります：あなたは、

if(isset($_GET["submit"])){ 

    if(isset($_GET["Kitchen"])){ 
     $arguments1[] = "Kitchen"; 
    } 
    if (isset($_GET["Common_CR"])) { 
     $arguments1[] = "Common CR"; 
    } 
    ... 

} 

そして最後に、より良い、このように、フォームのためのGETメソッドを使用しますページネーションリンクを正しく表示するためにURLのクエリー部分を使用する必要があります。だからあなたのページネーションリンクコードは次のようにする必要があります：

<ul id = "pagination"> 
<?php 
    parse_str($_SERVER["QUERY_STRING"], $url_array); 
    unset($url_array['page']); 
    $url = http_build_query($url_array); 

    // if($filt != 1){ 
    if($countQuery > 1){ 
     if($page > 1){ ?> 
      <li><a href="?page=<?php echo ($page-1); ?><?php echo isset($url) && !empty($url) ? "&" . $url : ""; ?>">&laquo;</a></li> 
     <?php 
     } 
     for($x = 1; $x <= $countQuery; $x++){ 
      if($x == $page){ ?> 
       <li><a class="current" href="?page=<?php echo $x; ?><?php echo isset($url) && !empty($url) ? "&" . $url : ""; ?>"><?=$x?></a></li> 
      <?php 
      }else{ ?> 
       <li><a href="?page=<?php echo $x; ?><?php echo isset($url) && !empty($url) ? "&" . $url : ""; ?>"><?=$x?></a></li> 
      <?php  
      } 
     } 

     if($page!=$countQuery){ ?> 
      <li><a href="?page=<?php echo ($page+1); ?><?php echo isset($url) && !empty($url) ? "&" . $url : ""; ?>">&raquo;</a></li> 
     <?php 
     } 
    } elseif ($countQuery < 1) { ?> 
     <p> No match found! </p> 
    <?php 
    } 
?> 
</ul>