Question

我对从MYSQL数据库中获得的结果进行过滤有问题。它使用ajax并过滤whree变量;城市，类别和子类别。

它应该按照这个选择的过滤顺序工作。第一个城市，然后是类别，然后是子类别。现在城市和类别之间的联系不起作用。

您可以看到它现在的样子：www.dittarbeid.no

继承人ajax / Mysql电话：

if($category_id=='' && $subcat_id=='' && $town_id!='' && $area_id==''){

$sql="SELECT * FROM joblisting where jobstatus='confirmed' and displaystatus='enable' and paidstatus='Yes' and jobdescription<>'' and Date_Add(paymentdate,INTERVAL 30 day)>$today and area='$area_id' and category='$category_id' order by jobID desc LIMIT 0,39";

以下是如何设置城镇菜单以及如何获取列表：

      <select id="city" style="background: url('asstes/barnsje.png') repeat-x center;" onchange="get_jobs_listed(); load_job_listed('area');$('#stown_cat').val(this.value);">
  <option value="">Velg By</option>    

                        <?php $area_res=  mysql_query("select * from municipality2 order by txt asc"); 
                              while($area_row=  mysql_fetch_array($area_res)){  
                              if($_SESSION["stown_cat"]==$area_row['id'])
                                        {
                                         echo '<option value="' . $area_row['id'] . '"selected>' . $area_row['txt'] . "</option>";
                                        }
                                       else
                                       echo '<option value="' . $area_row['id'] . '">' . $area_row['txt'] . "</option>";
                                        }   

                        ?>



</select>

和类别：

<select id="select_category" onchange="load_subcategory(this.value); $('#main_cat').val(this.value);" onclick="get_jobs_listed(this.value); load_job_listed('category')load_subcategory(this.value); ">
    <option value="">Velg Kategori</option>
  <?php $category_res=  mysql_query("select * from category order by categoryName ASC"); 
                              while($category_row=  mysql_fetch_array($category_res)){ 
                                     if($_SESSION["main_cat"]==$category_row['category_ID'])
                                        {
                                         echo '<option value="' . $category_row['category_ID'] . '"selected>' . $category_row['categoryName'] . "</option>";
                                        }
                                       else
                                       echo '<option value="' . $category_row['category_ID'] . '">' . $category_row['categoryName'] . "</option>";
                                        }
                                      ?>              





</select>

和子类别

<select id="subcategory" style="background: url('asstes/barnsje.png') repeat-x center;" onchange="load_job_listed('subcategory');$('#smain_cat').val(this.value);">

          <option value="">Velg Subkategori</option>      

                        <?php $subcategory_res=  mysql_query("select * from subcategory order by subcategoryname asc"); 
                              while($subcategory_row=  mysql_fetch_array($subcategory_res)){  
                              if($_SESSION["smain_cat"]==$subcategory_row['subcategoryID'])
                                        {
                                         echo '<option value="' . $subcategory_row['subcategoryID'] . '"selected>' . $subcategory_row['subcategoryname'] . "</option>";
                                        }
                                       else
                                       echo '<option value="' . $subcategory_row['subcategoryID'] . '">' . $subcategory_row['subcategoryname'] . "</option>";
                                        }
                                     ?>




</select>

使用数据库中的选择框过滤结果的问题

0 个答案: