[英]Use jQuery/Ajax to filter PHP SELECT query with dropdowns
我正在尝试使用jQuery / Ajax和PHP / MySQL创建过滤器。
我在HTML中有4个下拉列表选择,我想要实现以下功能:
当Ajax成功发布数据时,我的PHP文件将检查值是否为空,因此每个下拉列表都会在SELECT查询中添加“ AND”语句,例如:
SELECT * from properties WHERE property_id = '$property_id' AND dropdown_value = '$dropdown_value' AND dropdown_value2 = '$dropdown_value2'
因此,我可以设置所有变量,然后只检查发布的值是否为空,因此,如果为空,则根本不添加查询语句。
这可能吗?
谢谢。
编辑
当前代码:
$statements = array();
if (isset($_POST['segmento'])) {
$segmento_query = $_POST['segmento'];
$statements[] = " AND property_details.segmento = '$segmento_query' "; //condition for each property
}
if (isset($_POST['cidade'])) {
$cidade_query = $_POST['cidade'];
$statements[] = " AND property_details.cidade = '$cidade_query' ";
}
$filtraSegmento = "SELECT * FROM properties, property_complements, property_details WHERE property_complements.imovel_id = properties.property_id AND property_details.imovel_id = properties.property_id $statements";
你有没有尝试过:
$statements = array();
if (isset($POST['param1']) {
$param1 = $POST['param1'];
$statements[] = " property1 = '$param1' "; //condition for each property
}
if (isset($POST['param2']) {
$param2 = $POST['param2'];
$statements[] = " property2 = '$param2' ";
}
//.....more.....
$sql = "SELECT * FROM tbl WHERE ". implode('AND', $statements);
//do something here
编辑 :使用$statements
作为字符串
$statements = '';
if (isset($_POST['segmento'])) {
$segmento_query = $_POST['segmento'];
$statements .= " AND property_details.segmento = '$segmento_query' "; //condition for each property
}
if (isset($_POST['cidade'])) {
$cidade_query = $_POST['cidade'];
$statements .= " AND property_details.cidade = '$cidade_query' ";
}
$filtraSegmento = "SELECT * FROM properties, property_complements, property_details WHERE property_complements.imovel_id = properties.property_id AND property_details.imovel_id = properties.property_id $statements";
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