我已使用以下链接集成了jQuery UI与Rails的自动完成功能：
http://www.lugolabs.com/articles/20-jquery-ui-autocomplete-with-ruby-on-rails
出于某种原因，我收到了这个错误：
Uncaught TypeError: Cannot set property '_renderItem' of undefined
at app.PopularSchools._initAutocomplete (inner_layout.self-7e73ad8….js?body=1:231)
at app.PopularSchools (inner_layout.self-7e73ad8….js?body=1:220)
at HTMLDocument.<anonymous> (inner_layout.self-7e73ad8….js?body=1:213)
at fire (jquery.self-bd7ddd3….js?body=1:3233)
at Object.fireWith [as resolveWith] (jquery.self-bd7ddd3….js?body=1:3363)
at Function.ready (jquery.self-bd7ddd3….js?body=1:3583)
at HTMLDocument.completed (jquery.self-bd7ddd3….js?body=1:3618)
我的application.js文件：
//= require inner_layout/jQuery-2.1.4.min
//= require rails-jquery-tokeninput
//= require inner_layout/bootstrap.min
//= require jquery_ujs
//= require inner_layout/jquery.mCustomScrollbar.concat.min
//= require inner_layout/app.min
//= require inner_layout/owl.carousel.min
//= require jquery.remotipart
//= require jquery-ui
//= require cocoon
//= require autocomplete-rails
//= require moment
//= require bootstrap-datetimepicker
//= require ../common_js/custom
//= require jquery-ui/widgets/autocomplete
//= require tinymce
//= require common_js/jquery.raty.js
//= require_self
完整的代码是：
$(function () {
new app.PopularSchools;
});
var app = window.app = {};
app.PopularSchools = function () {
this._input = $('#search-txt');
this._initAutocomplete();
};
app.PopularSchools.prototype = {
_initAutocomplete: function () {
this._input
.autocomplete({
source: 'popular_schools/get_all_schools',
appendTo: '#search-results',
select: $.proxy(this._select, this)
})
.autocomplete('instance')._renderItem = $.proxy(this._render, this);
},
_render: function (ul, item) {
var markup = [
'<span class="name">' + item.name + '</span>',
];
return $('<li>')
.append(markup.join(''))
.appendTo(ul);
},
_select: function (e, ui) {
$("#id").val(ui.item.id);
$("#type").val(ui.item.type);
this._input.val(ui.item.name);
return false;
}
};
修改：
每条评论添加<head></head>内容：
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<link rel="shortcut icon" type="image/x-icon" href="/assets/favicon-fc4de0140d07a7fb9ab4f50fa2e0f48d215231c90c716a0109942cb07ec4459e.jpg">
<title>Site Title</title>
<link rel="stylesheet" media="all" href="/assets/common_css/bootstrap.self-8eed0a962b1f6cd0dee143c17da4398c45c23dda6b4a036e98cd700010aaa12e.css?body=1">
<link rel="stylesheet" media="all" href="/assets/common_css/bootstrap-flex.self-b3cbfd57f1adb9aa0f7d0bf99f76ef8eda3f57482eb4dfe5b0c7799f863bf4a5.css?body=1">
<link rel="stylesheet" media="all" href="/assets/jquery-ui.self-80de8350e5025ebca2c2899295a636ec9bd4608f09787334c5c92c102fff5939.css?body=1">
<link rel="stylesheet" media="all" href="/assets/token-input-facebook.self-5074a1bc7f07d8d2125d9c63eae7450c5ad544c9fdf8f29a016eb1ad704a738b.css?body=1">
<link rel="stylesheet" media="all" href="/assets/daterangepicker.self-3ac07b1b1cacfb4e8ec02be3bf11cbb672db20240ac86ea331391451e5fd2cdb.css?body=1">
<link rel="stylesheet" media="all" href="/assets/prettify.self-f2a5364acbaf236a6fd79eca52d2b47063b66aebb2381bb9688cfa40ae1246bf.css?body=1">
<link rel="stylesheet" media="all" href="/assets/jquery-ui/theme.self-830c3407ba1359ea36eee978235be14de5b78dacfa658a31226fe4f2b0faa7e7.css?body=1">
<link rel="stylesheet" media="all" href="/assets/jquery-ui/autocomplete.self-f0b810a4a7bb8c90994675d7c5bfe636d615a5785cf81cae3340aa5e6adc55ca.css?body=1">
<link rel="stylesheet" media="all" href="/assets/common_css/font-awesome.min.self-053e8e59e362ea6dfaaa1d47542e9ac73bb508aaa8a108e78a5af17c78b28f79.css?body=1">
<link rel="stylesheet" media="all" href="/assets/common_css/material-design-iconic-font.min.self-0721df3f25a30e97b682c1ae0404435c893068dd3b51ee6947a762965d419569.css?body=1">
<link rel="stylesheet" media="all" href="/assets/inner_layout/jquery.mCustomScrollbar.self-222a444a523a37f06879d29860c9757240e74d1770b219a6a9ad00676e9d3445.css?body=1">
<link rel="stylesheet" media="all" href="/assets/inner_layout/weevur.self-717c50da898a613886688634a4131f7a63b4b747feda890032a779e756263ead.css?body=1">
<link rel="stylesheet" media="all" href="/assets/inner_layout/weevur-theme.self-20b31bcd58caa9be715480411040758dd09ae37734ed64c06be62797e707a061.css?body=1">
<link rel="stylesheet" media="all" href="/assets/style.self-0acb00764e0eb2fad99b783ee67311c94aef7d46add583515a4d09cc8ee828e4.css?body=1">
<link rel="stylesheet" media="all" href="/assets/inner_layout/inner_layout.self-b57a4eaaabb432402eb122602acd085692f2d94eb274d1eabbfb06b2ce3b671e.css?body=1">
<link rel="stylesheet" media="all" href="/assets/inner_layout/_color-variable.self-a7d19b357431705284de31486cf7e915f9513f6e01633a475743b7252197b23f.css?body=1">
<link rel="stylesheet" media="all" href="/assets/inner_layout/owl.carousel.min.self-6570efd06433eaf06c957ee48fb13c1d97f89b239526aa5e4f1b8f9ca10ccbe1.css?body=1">
<link rel="stylesheet" media="all" href="/assets/inner_layout/owl.theme.self-3e80d06e340350c29e5ed031a85f9529dbea92d25d960ae4c7cfcd31ea1b722b.css?body=1">
<script src="https://js.pusher.com/3.2/pusher.min.js"></script>
<script>
var pusher = new Pusher('34c0cdbc218bac1d4dac', {
encrypted: true
});
var channel = pusher.subscribe('channel-' +70);
channel.bind('notification_event', function (data) {
$("#notification").fadeIn("slow").html(data.message + "<span class='dismiss'><a title='dismiss this notification'>X</a></span>");
$("#notification_drop").prepend("<li class='notices'><a href=" + data.url + ">" + data.message + "</a></li>");
$("span#notification_count").text(parseInt($('span#notification_count').text())+1);
$("span.badge").text(parseInt($('span.badge').text())+1);
$(".dismiss").click(function () {
$("#notification").fadeOut("slow");
});
});
</script>
<script src="/assets/inner_layout/jQuery-2.1.4.min.self-92bfaaece1eee1e40fd3b55441ee536e7f6a03242aa5fe10e2597a27103c9dae.js?body=1"></script>
<script src="/assets/jquery.self-bd7ddd393353a8d2480a622e80342adf488fb6006d667e8b42e4c0073393abee.js?body=1"></script>
<script src="/assets/jquery.tokeninput.self-b727cdd4b322bd427f485dd21b9248b710f4ce186350c53b3c35ef515264ed2d.js?body=1"></script>
<script src="/assets/rails-jquery-tokeninput.self-2b46449b4d53a7134ff76a0a5abaf2a66b3f223ce373498d131468ab6944c634.js?body=1"></script>
<script src="/assets/inner_layout/bootstrap.min.self-504d59678f10d79a661b6cecdce5b8c1d5bfd98e860614584c0a40399552d61f.js?body=1"></script>
<script src="/assets/jquery_ujs.self-784a997f6726036b1993eb2217c9cb558e1cbb801c6da88105588c56f13b466a.js?body=1"></script>
<script src="/assets/inner_layout/jquery.mCustomScrollbar.concat.min.self-682cbac60ea68d85ee1d08249eb4c1a73b83e659f5ad8dde9406d06715d88b0b.js?body=1"></script>
<script src="/assets/inner_layout/app.min.self-7175e52be5d1868e9c02087f9030953eaadcb4c11b35feb69f48afa29e6b5ce5.js?body=1"></script>
<script src="/assets/inner_layout/owl.carousel.min.self-1a656d9fbdd97437fabb09a673bcfbd8dcd61704a72fe5ce95bd52799a9afab7.js?body=1"></script>
<script src="/assets/jquery.iframe-transport.self-b58640d2146e10a028d4aec4f1c6e624305f8b5edd02cbb5ca77f7fb56b4d976.js?body=1"></script>
<script src="/assets/jquery.remotipart.self-1660679e325ee534ce863e680eb6ad0bc9739d262594dc1337a2171e5c19c939.js?body=1"></script>
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