jQuery自动完成+ AngularJS的问题

Question

我在我的页面上使用AjgularJS并且想要添加一个字段以使用来自jqueryui的自动完成,并且自动完成不会触发ajax调用.

我已经在没有角度的页面上测试了脚本(ng-app和ng-controller)并且它运行良好,但是当我将脚本放在带有angularjs的页面上时它会停止工作.

任何的想法？

jquery脚本:

$(function () {

    $('#txtProduct').autocomplete({
        source: function (request, response) {

            alert(request.term);

        },
        minLength: 3,
        select: function (event, ui) {

        }
    });

});

• 有趣的是:当我在Chrome检查器上调用脚本时,自动完成功能开始工作!
• 版本:AngularJS:1.0.2 - JqueryUI:1.9.0

结论: 来自jQueryUI的自动完成小部件必须从AngularJS的自定义指令内部初始化,例如:

标记

<div ng-app="TestApp">
    <h2>index</h2>
    <div ng-controller="TestCtrl">

        <input type="text" auto-complete>ddd</input>

    </div>
</div>

角度脚本

<script type="text/javascript">

    var app = angular.module('TestApp', []);

    function TestCtrl($scope) { }

    app.directive('autoComplete', function () {
        return function postLink(scope, iElement, iAttrs) {

            $(function () {
                $(iElement).autocomplete({
                    source: function (req, resp) {
                        alert(req.term);
                    }
                });
            });

        }
    });

</script>

Answer 1

也许您只需要以"有角度的方式"进行操作......也就是说,使用指令设置DOM元素并进行事件绑定,使用服务获取数据,并使用控制器来开展业务逻辑......同时利用Angular的依赖注入优势......

获取自动填充数据的服务...

app.factory('autoCompleteDataService', [function() {
    return {
        getSource: function() {
            //this is where you'd set up your source... could be an external source, I suppose. 'something.php'
            return ['apples', 'oranges', 'bananas'];
        }
    }
}]);

用于设置自动完成插件的指令.

app.directive('autoComplete', function(autoCompleteDataService) {
    return {
        restrict: 'A',
        link: function(scope, elem, attr, ctrl) {
                    // elem is a jquery lite object if jquery is not present,
                    // but with jquery and jquery ui, it will be a full jquery object.
            elem.autocomplete({
                source: autoCompleteDataService.getSource(), //from your service
                minLength: 2
            });
        }
    };
});

并在标记中使用它...注意ng-model,用你选择的内容在$ scope上设置一个值.

<div ng-controller="Ctrl1">
    <input type="text" ng-model="foo" auto-complete/>
    Foo = {{foo}}
</div>

这只是基础知识,但希望这有所帮助.

Answer 2

我不得不做更多的工作来使用$ http服务来实现这一点.

服务:

app.factory("AutoCompleteService", ["$http", function ($http) {
    return {
        search: function (term) {
            return $http.get("http://YourServiceUrl.com/" + term).then(function (response) {
                return response.data;
            });
        }
    };
}]);

指令:

app.directive("autocomplete", ["AutoCompleteService", function (AutoCompleteService) {
    return {
        restrict: "A",
        link: function (scope, elem, attr, ctrl) {
            elem.autocomplete({
                source: function (searchTerm, response) {
                    AutoCompleteService.search(searchTerm.term).then(function (autocompleteResults) {
                        response($.map(autocompleteResults, function (autocompleteResult) {
                            return {
                                label: autocompleteResult.YourDisplayProperty,
                                value: autocompleteResult 
                            }
                        }))
                    });
                },
                minLength: 3,
                select: function (event, selectedItem) {
                    // Do something with the selected item, e.g. 
                    scope.yourObject= selectedItem.item.value;
                    scope.$apply();
                    event.preventDefault();
                }
            });
        }
    };
}]);

html:

<input ng-model="YourObject" autocomplete />