使用此脚本, https://www.devbridge.com/sourcery/components/jquery-autocomplete/
我正在使用jQuery Autocomplete从我的数据库中搜索用户。
下面是返回Json的控制器:
public function searchusers1() {
if ($_GET) {
$query = $this -> input -> get('query');
$searcharray = $this -> model_usermanage -> searchuser($query);
$a_json = array();
$a_json_row = array();
foreach($searcharray as $row) {
//$user_firstname = htmlentities(stripslashes($row['user_firstname']));
//$user_lastname = htmlentities(stripslashes($row['user_lastname']));
$user_email = htmlentities(stripslashes($row['user_email']));
//$a_json_row["user_firstname"] = $user_firstname;
$a_json_row["user_email"] = $user_email;
array_push($a_json, $a_json_row);
}
echo json_encode($a_json);
}
}
以下是我的jQuery:
$('#reply_bcc').autocomplete({
serviceUrl: '<?php echo base_url(); ?>index.php/hi/test/searchusers1',
minChars: 3,
onSelect: function (suggestion) {
console.log('You selected: ' + suggestion.data + ', ' + suggestion.data);
}
});
这是我的JSON回复:
[{"user_email":"hi@test.com"},{"user_email":"hello@au.com"},{"user_email":"testing@123.com"},]
我的HTML:
<div class="col-md-10">
<input type="text" name="reply_bcc" id="reply_bcc" autocomplete="off" class="form-control">
</div>
我的问题是:
我在控制台中出现以下错误,我无法在html输入中看到此搜索值作为下拉列表:
未捕获的TypeError:无法读取未定义的属性“长度”
这有什么问题?
谢谢!
答案 0 :(得分:4)
文档说明“来自服务器的响应必须是遵循JavaScript对象的JSON格式:”
{
// Query is not required as of version 1.2.5
"query": "Unit",
"suggestions": [
{ "value": "United Arab Emirates", "data": "AE" },
{ "value": "United Kingdom", "data": "UK" },
{ "value": "United States", "data": "US" }
]
}
你只是返回一个没有格式值/数据的数组。您可以在PHP中更改格式或使用“transformResult”函数为您的数组创建advice属性。
您应该在PHP代码中添加一个对象:
$obj = new stdClass();
$obj->suggestions = $a_json;
echo json_encode($obj);
答案 1 :(得分:0)
您不需要调用stdClass()。函数json_encode()为您将关联数组转换为JSON。这是一个示例:
<?php
$query="";
if (isset($_GET['query'])) $query=$db_handler->real_escape_string($_GET['query']);
$sql="SELECT `user_id`,`user_name` FROM `some_table`
WHERE `user_name` LIKE '%{$query}%' ORDER BY `user_name`";
$res=$db_handler->query($sql);
if ($res->num_rows > 0)
{
$data=array();
while($row = $res->fetch_object())
{
$data[]=array("value" => $row->user_name, "data" => $row->user_id);
}
$res->free();
}
header('Content-Type: application/json');
echo json_encode(array("suggestions" => $data));
?>
上面的代码将输出如下内容:
{"suggestions":[{"value":"Joe Blow","data":"1000"},{"value":"Jane Blow","data":"1001"}]}
这是.autocomplete期望的格式:JavaScript对象表示法。