javascript Select2 4 自定义数据适配器
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/31810513/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Select2 4 custom data adapter
提问by PowerGamer
I am trying to create a custom data adapter according to an example here: http://select2.github.io/announcements-4.0.html#query-to-data-adapter. How can I move the line that creates the select2 control outside the function with definition of DataAdapter (see the code below)?
我正在尝试根据此处的示例创建自定义数据适配器：http: //select2.github.io/announcements-4.0.html#query-to-data-adapter。如何将创建 select2 控件的行移动到具有 DataAdapter 定义的函数之外（请参阅下面的代码）？
<!DOCTYPE html>
<head>
<title></title>
<link href="select2.css" rel="stylesheet" />
<script type="text/javascript" src="http://code.jquery.com/jquery-2.1.4.js"></script>
<script type="text/javascript" src="select2.full.js"></script>
<script type="text/javascript">
$.fn.select2.amd.require(
['select2/data/array', 'select2/utils'],
function (ArrayData, Utils) {
function CustomData ($element, options) {
CustomData.__super__.constructor.call(this, $element, options);
}
Utils.Extend(CustomData, ArrayData);
CustomData.prototype.query = function (params, callback) {
var data = {results: []};
data.results.push({id: params.term, text: params.term});
data.results.push({id: 11, text: 'aa'});
data.results.push({id: 22, text: 'bb'});
callback(data);
};
// Works if uncommented, but this line needs to be elsewhere (in $(document).ready()).
//$("#my").select2({tags: true, dataAdapter: CustomData});
});
$(document).ready(function() {
// This line does not work here.
$("#my").select2({tags: true, dataAdapter: CustomData});
});
</script>
</head>
<body>
<select id="my"></select>
</body>
</html>
回答by gunthor
you define it via AMD-Pattern:
你通过 AMD-Pattern 定义它：
$.fn.select2.amd.define('select2/data/customAdapter',[
'select2/data/array',
'select2/utils'
],
function (ArrayAdapter, Utils) {
function CustomDataAdapter ($element, options) {
CustomDataAdapter.__super__.constructor.call(this, $element, options);
}
Utils.Extend(CustomDataAdapter, ArrayAdapter);
CustomDataAdapter.prototype.current = function (callback) {
callback(...);
};
return CustomDataAdapter;
}
);
var customAdapter=$.fn.select2.amd.require('select2/data/customAdapter');
$("#my").select2({
tags: true,
dataAdapter: customAdapter
});
回答by ojathelonius
For anyone trying to extend select2, here is an example :
对于任何试图扩展select2 的人，这里是一个例子：
// Require the adapter you want to override
$.fn.select2.amd.require(["select2/data/select"], function (Select) {
let CustomDataAdapter = Select;
// Simple example, just override the function
CustomDataAdapter.prototype.current = function (callback) {
// Your own code
};
// Example modifying data then calling the original function (which we need to keep)
let originalSelect = CustomDataAdapter.prototype.select;
CustomDataAdapter.prototype.select = function (data) {
// Your own code
// Call the original function while keeping 'this' context
originalSelect.bind(this)(data);
};
// Finally, use the custom data adapter
$('#my-select').select2({
dataAdapter: CustomDataAdapter
});
});
