更新: Here is a link to reproduce the problem
相关: This is another question of mine where similar problems are happening with Kendo UI Map, maybe it could help someone figure this one out!它有一个失败版和一个版本。
我在Angular单页面应用程序中使用Kendo UI的DataSource,DropDownList和Map。
我想为DropDownList和Map使用相同的DataSource对象。但是,地图的行为方式非常不可预测。
transport.read
中不使用任何承诺,但只是立即使用静态值调用options.success
时,一切都按预期工作。正在进行两次通话。我整个工作日都在梳理头发,所以任何帮助都会受到高度赞赏。
数据源服务:
m.factory('ourDataSource', function(foo, bar, baz) {
return new kendo.data.DataSource({
transport: {
read: function(options) {
foo().then(function (result) {
return bar(result);
}).then(function (result) {
return baz(result);
}).then(function (result) {
options.success(result);
}).catch(function (err) {
options.error(err);
});
}
}
});
});
控制器:
m.controller('ourController', ['ourDataSource', function(ourDataSource) {
// set the data source of the dropdownlist
this.ourDataSource = ourDataSource;
// set up the map layers
this.mapLayers = [{
type: 'tile',
urlTemplate: 'https://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer/tile/#= zoom #/#= y #/#= x #',
}, {
type: 'marker',
dataSource: ourDataSource, // the same data source as before
locationField: 'Position',
titleField: 'Title'
}];
}]);
观点:
<div ng-controller="ourController as ctrl">
<select kendo-drop-down-list
k-data-text-field="'Title'"
k-data-value-field="'Title'"
k-data-source="ctrl.ourDataSource"></select>
<div kendo-map
k-zoom="2"
k-center="[1, 1]"
k-layers="ctrl.mapLayers">
</div>
</div>
我在这里缺少什么?
答案 0 :(得分:0)
我认为这可能是Kendo UI Map小部件中的一个错误,因为此处发生的行为根本不是人们所期望的。但是,我确实有一个解决方法。而不是将数据源作为单个对象返回,而是将其作为函数返回。这可能不太理想,但它确实有效。
angular.module('ourModule', ['kendo.directives'])
.factory('getDataSource', function ($q) {
return function() { // return a function that creates a new data source
return new kendo.data.DataSource({
transport: {
read: function (options) {
$q.when([
{Position: [1, 1], Title: 'First place'},
{Position: [10, 10], Title: 'Second place'}
]).then(function (result) {
options.success(result);
});
}
}
});
};
})
.controller('ourController', function (getDataSource) {
this.ourDataSource = getDataSource();
this.mapLayers = [{
type: 'tile',
urlTemplate: '...removed for brevity...'
}, {
type: 'marker',
dataSource: getDataSource(),
locationField: 'Position',
titleField: 'Title'
}];
});
答案 1 :(得分:0)
工厂主要用于按需创建实例。见这个例子
var app = angular.module('ourModule', ['kendo.directives']);
app.factory('dataSourceFactory', function($q) {
function dataSourceFactory() {}
dataSourceFactory.prototype = {
contentTypes: function() {
return new kendo.data.DataSource({
transport: {
read: function(options) {
$q.when(
[{
Position: [1, 1],
Title: 'First place'
}, {
Position: [10, 10],
Title: 'Second place'
}])
.then(function(result) {
options.success(result);
});
}
}
})
}
};
return dataSourceFactory;
});
app.controller('ourController', ['$scope', 'dataSourceFactory',
function($scope, dataSourceFactory) {
var dataSourceFactory = new dataSourceFactory();
$scope.mapLayers = [{
type: 'tile',
urlTemplate: 'https://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer/tile/#= zoom #/#= y #/#= x #',
}, {
type: 'marker',
dataSource: dataSourceFactory.contentTypes(), // the same data source as before
locationField: 'Position',
titleField: 'Title'
}];
$scope.ourDataSource = dataSourceFactory.contentTypes();
}
]);
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2015.3.930/styles/kendo.common.min.css">
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2015.3.930/styles/kendo.rtl.min.css">
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2015.3.930/styles/kendo.default.min.css">
<link rel="stylesheet" href="http://kendo.cdn.telerik.com/2015.3.930/styles/kendo.mobile.all.min.css">
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script src="http://kendo.cdn.telerik.com/2015.3.930/js/angular.min.js"></script>
<script src="http://kendo.cdn.telerik.com/2015.3.930/js/jszip.min.js"></script>
<script src="http://kendo.cdn.telerik.com/2015.3.930/js/kendo.all.min.js"></script>
<div ng-app="ourModule">
<div ng-controller="ourController">
<kendo-drop-down-list k-data-source="ourDataSource"
k-data-text-field="'Title'"
k-data-value-field="'Title'">
</kendo-drop-down-list>
<kendo-map k-zoom="2"
k-layers="mapLayers">
</kendo-map>
</div>
</div>
请参阅此JSFiddle演示