dedecms织梦后台自定义表单添加搜索功能

<div class="bodytitletxt" style="padding-left:10px;"><form name='form1' action="diy_list.php"><input type='hidden' name='action' value='list' /><input type='hidden' name='diyid' value='<?php echo $diy->diyid; ?>' />关键字：<input type='text' name='keyword' size='20' value="<?php echo $keyword; ?>" /><select name="field"><?phpforeach($fieldlist as $k=>$fielddata){if($k==$field){echo "<option value='{$k}' selected>{$fielddata[0]}</option>\r\n";}else{echo "<option value='{$k}'>{$fielddata[0]}</option>\r\n";}}?></select><input type='submit' name='sb' value='确定' class="coolbg np" /></form></div>

$query = "SELECT * FROM {$diy->table} ORDER BY id DESC";

if(empty($keyword)){$keyword = '';$addquery = '';}else{$addquery = " WHERE {$field} LIKE '%".trim($keyword)."%' ";}$query = "SELECT * FROM {$diy->table} $addquery ORDER BY id DESC";

$datalist->SetParameter('diyid', $diyid);

$datalist->SetParameter('keyword', $keyword);$datalist->SetParameter('field', $field);