我想从服务中的方法访问数据,该方法返回我用来发出HTTP请求的坐标。我在我的控制器中添加了我的Leaflet代码,这样我就可以访问lat,lng坐标来向另一个API发出API请求。一切正常。问题是当我尝试将这些数据传递给控制器时,它不读取属性“L.Control.Search”。我也试图编写一个数组并在控制器中访问它,并返回undefined。使用方法从角度服务访问数据
app.service('mapService', (function($http,$q) {
//Coordinates
var fmCoordinates = {};
//Function to Request markets
var requestMarkets = function(lat,lng){
var defer = $q.defer();
var dataFromHttp = {};
var options = {
type: "GET",
contentType: "application/json; charset=utf-8",
url: "http://someurl?lat=" + lat + "&lng=" + lng
};
$http(options).then(function(result) {
dataFromHttp = result.data;
defer.resolve(dataFromHttp);
}, function(error){
defer.reject(error);
});
return defer.promise;
};
L.Control.Search = L.Control.extend({
_getLocation: function(key) { //extract latlng from _recordsCache
var latLong = this._recordsCache[key];
console.log("This is latlong:\n"+Object.keys(latLong));
fmCoordinates.lat = latLong.lat;
fmCoordinates.lng = latLong.lng;
console.log(fmCoordinates.lat,fmCoordinates.lng || "Nothing yet!");
var promise = requestMarkets(fmCoordinates.lat,fmCoordinates.lng);
promise.then(function(greeting) {
for(var property in greeting.results) {
console.log(property + "=" + greeting.results[property]);
};
console.log('Success: ' + greeting.results);
}, function(reason) {
console.log('Failed: ' + reason);
});
if(this._recordsCache.hasOwnProperty(key))
return latLong;//then after use .loc attribute
else
return false;
},
L.Map.addInitHook(function() {
if (this.options.searchControl) {
this.searchControl = L.control.search(this.options.searchControl);
this.addControl(this.searchControl);
}
});
L.control.search = function (options) {
return new L.Control.Search(options);
};
}));
你在哪里回报什么?您只能访问您在服务中返回的数据。 –
好吧,我明白了。现在在我的控制器中,我想调用mapService.requestMarkets,但requestMarkets在_getLocation()中调用。我仍然无法访问该函数,因为它位于我的控制器不识别的L.Control.Search中。 – Roscoe
例如,您可以返回L.Control.Search。 'return {search:L.Control.Search,requestMarkets:requestMarkets}',然后在你的控制器中只需要'mapService.search()' –