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I have a function in node.js that looks like this:
exports.getAllFlights = function(getRequest) {
// this is the package from npm called "async"
async.map(clients, getFlight, function(err, results) {
getRequest(results);
});
}
The variable clients should be a JSON that looks like this:
{'"A4Q"': 'JZA8187', "'B7P"': 'DAL2098' }.
I expect that the map function will pass the individual indices of the array of the variable clients to getFlight. However, instead it passed the values of that each(ex: 'DAL2098', 'JZA8187' and so on).
Is this the expected functionality? Is there a function in async that will do what I want?
The signature of getFlight is getFlight(identifier, callback). Identifier is what is currently messed up. It returns callback(null, rtn). Null reprsents the nonexistence of an error, rtn represents the JSON that my function produces.
Yes, that's the expected result. The documentation is not very clear but all iterating functions of async.js pass the values of the iterable, not the keys. There is the eachOf series of functions that pass both key and value. For example:
async.eachOf(clients, function (value, key, callback) {
// process each client here
});
Unfortunately there is no mapOf.
If you don't mind not doing things in parallel you can use eachOfSeries:
var results = [];
async.eachOfSeries(clients, function (value, key, callback) {
// do what getFlight needs to do and append to results array
}, function(err) {
getRequest(results);
});
Another (IMHO better) workaround is to use proper arrays:
var clients = [{'A4Q': 'JZA8187'},{'B7P': 'DAL2098'}];
Then use your original logic. However, I'd prefer to use a structure like the following:
var clients = [
{key: 'A4Q', val: 'JZA8187'},
{key: 'B7P', val: 'DAL2098'}
];
First create a custom event. Attach a listener for return data. then process it.
var EventEmitter = require('events');
var myEmitter = new EventEmitter();
myEmitter.emit('clients_data',{'"A4Q"': 'JZA8187'}); //emit your event where ever
myEmitter.on('clients_data', (obj) => {
if (typeof obj !=='undefined') {
if (obj.contructor === Object && Object.keys(obj).lenth == 0) {
console.log('empty');
} else {
for(var key in obj) {
var value = obj[key];
//do what you want here
}
}
}
});
Well, you need to format your clients object properly before you can use it with async.map(). Lodash _.map() can help you:
var client_list = _.map(clients, function(value, key) {
var item = {};
item[key] = value;
return item;
});
After that, you will have an array like:
[ { A4Q: 'JZA8187' }, { B7P: 'DAL2098' } ]
Then, you can use async.map():
exports.getAllFlights = function(getRequest) {
async.map(client_list, getFlight, function(err, results) {
getRequest(results);
});
};
I try to use ng-tags-input with a returned Json list by an api controller .net Mvc 6. My list is created in json but when try to display this list with the autocompletion , nothing works. My autocomplete list isn't displayed and I don't have error in chrome console.
So this is an object of my list :
[{
"ShopID":1,
"CompanyID":1,
"RegionID":1,
"Name":"Les Pieux",
"Town":"Les Pieux",
"Address":null,
"ZipCode":null,
"CreateDate":"2006-01-01T00:00:00",
"ModificationDate":"2006-09-29T00:00:00",
"LastModificationUserID":1,
"PhoneNumber":null,
"Fax":null,
"Email":null,
"CEmployeeShop":null
}]
This is my method in my controller:
$scope.tokenShops = [];
$scope.loadJsonShops = function(query)
{
//$scope.shops contains my list of shops in json format.
return $scope.shops;
}
And the tag in Html:
<div ng-controller="EmployeesCtrl">
<tags-input ng-model="tokenShops"
display-property="Name"
Placeholder="Ajouter un magasin"
add-from-autocomplete-only="true">
<auto-complete resource="loadJsonShops($query)"></auto-complete>
</tags-input>
</div>
This is my code that populates $scope.shops
Api Controller:
public IEnumerable<Shop> Get()
{
using (LSContext db = new LSContext())
{
var listShop = db.Shops.ToList();
return listShop;
}
}
angular shopCtrl:
function ShopsCtrl($scope, $http, $rootScope) {
function getShopsList() {
var reqGetShops = $http({ url: 'api/Shops' });
reqGetShops.success(function (data) {
$scope.shops = data;
$rootScope.$broadcast("getListShops", { list: data });
});
}
//with api controller the list is returned in json format. I tried an another method to fill my list with an convertion that I do and it doesn't work.
angularjs EmployeeCtrl :
$scope.$on("getListShops", function (event, args) {
$scope.shops = args.list;
$scope.selectShop = args.list[0];
})
But I don't think that my problem from my json list.
I hope someone can help me . Have a nice day.
I resolve my problem with a directive:
angular.module('TagsDirective', ['myResources', 'resourcesManagerGet', 'translateI18n'])
.directive('tags', function ($http, $q) {
return {
restrict: 'E',//restraint pour les éléments du dom
template: '<tags-input ng-model="SShops" key-property="ShopID" display-property="Name" placeholder="{{\'AddShop\' | i18n}}" add-from-autocomplete-only="true"><auto-complete source="loadTags($query)"></auto-complete></tags-input>',
scope: false,
link: function (scope, el) {
scope.loadTags = function (query) {
var deferred = $q.defer();
var reqGetShops = $http({ url: 'api/Shops/GetListShopFiltered', params: { 'query': query } });
reqGetShops.success(function (data) {
deferred.resolve(data);
});
return deferred.promise;
}
}
}
});
and in Html:
<tags></tags>
g0loob : thanks for your help, but now you can put an array of objects and use the attribute display-property to choose the text property to display.
example:http://mbenford.github.io/ngTagsInput/demos and look the tags input with custom object.
auto-complete requires array of objects with at least one property named "text" (just like tags-input), if you are not using your template for auto-complete or tags-input. And you also need to filter your result for auto-complete in order to work properly. Also see this link.
angular.module('TagsDirective', ['myResources', 'resourcesManagerGet', 'translateI18n'])
.directive('tags', function ($http, $q) {
return {
restrict: 'E',//restraint pour les éléments du dom
template: '<tags-input ng-model="SShops" key-property="ShopID" display-property="Name" placeholder="{{\'AddShop\' | i18n}}" add-from-autocomplete-only="true"><auto-complete source="loadTags($query)"></auto-complete></tags-input>',
scope: false,
link: function (scope, el) {
scope.loadTags = function (query) {
var deferred = $q.defer();
var reqGetShops = $http({ url: 'api/Shops/GetListShopFiltered', params: { 'query': query } });
reqGetShops.success(function (data) {
deferred.resolve(data);
});
return deferred.promise;
}
}
}
I am trying to display nested JSON in a page. I'm not sure how to drill down into it.
In my app js file I have an parameter called initialData that I want to call a function getProducts() when the view is called...
'use strict';
var quoteApp = angular.module('quoteApp', ['ui.router']);
quoteApp.config(function($stateProvider, $urlRouterProvider) {
$urlRouterProvider.otherwise('/home');
$stateProvider
// HOME STATES AND NESTED VIEWS ========================================
.state('home', {
url: '/home',
templateUrl: 'ng-views/choose.html',
controller: "quoteBuilderController",
resolve: {
initialData: ['quoteApi', function (quoteApi) {
return quoteApi.getProducts();
}]
}
})
});
my quoteApi looks like this in case you want to see it...
(function () {
'use strict';
angular.module('quoteApp').factory('quoteApi', quoteApi);
quoteApi.$inject = ['$http'];
function quoteApi($http) {
var service = {
getProducts: getProducts,
getPrices: getPrices
};
var baseUrl = 'http://www.website.com/api/Pricing';
return service;
function getProducts() {
return httpGet('/GetProductCatalogue');
}
function getPrices() {
return httpGet('/GetPrices');
}
/** Private Methods **/
function httpExecute(requestUrl, method, data){
return $http({
url: baseUrl + requestUrl,
method: method,
data: data,
headers: requestConfig.headers }).then(function(response){
return response.data;
});
}
function httpGet(url){
return httpExecute(url, 'GET');
}
}
})();
So quoteApi.getProducts() returns JSON that looks like this...
{
"Cat1": [
{
"product_id": 1,
"product_name": "Prod1"
},
{
"product_id": 2,
"product_name": "Prod2"
}
],
"Cat2": [
{
...
}
]
}
My controller for the view looks like this...
(function () {
'use strict';
angular.module('quoteApp').controller('quoteController', ['$scope', '$http', '$timeout', quoteController]);
quoteController.$inject = ['initialData', 'quoteApi'];
function quoteController($scope, initialData) {
$scope.cat1Products = initialData;
};
})();
So my question is, how can I get 'initialData' to load products from Cat1 only? Should I try to do this from the html? It seems like it should be straight forward enough but I can seem to get it. Thank you.
You need to transform your response from your http request further so you only return the piece you require, and you may also want to consider using the .then() approach:
$http.get('/someUrl').then(function(response) {
//Do something with response.data.Cat1 here
}, function(errResponse) {
console.error('Error while fetching data');
});
Just take out cat1 from your initialData object
function quoteController($scope, initialData) {
$scope.cat1Products = initialData['Cat1'];
};
I would like to display data returned from service call into view:
Service Code :
.service('HomeExchangeList', function ($rootScope, $http, $log) {
this.getHomeExchange = function() {
var rates = $http({
method: 'GET',
url: 'http://localhost:8080/feeds/homerates_android.php'
}).success(function (data) {
$log.log(data);
return data;
});
return homeRates;
};
})
JSON Data returned by service
{
"record":[
{
"Name":"GBP\/USD",
"Ticker":"GBP\/USD",
"Price":"0.5828",
"Open":"0.5835",
"High":"0.5848",
"Low":"0.5828",
"PercentagePriceChange":"0.1371",
"Movement":"0.0800",
"DateStamp":"2014\/07\/09",
"TimeStamp":"22:15:00"
},
{
"Name":"EUR\/USD",
"Ticker":"EUR\/USD",
"Price":"0.7330",
"Open":"0.7344",
"High":"0.7351",
"Low":"0.7327",
"PercentagePriceChange":"0.2585",
"Movement":"0.1900",
"DateStamp":"2014\/07\/09",
"TimeStamp":"22:15:00"
},
{
"Name":"GHS\/USD",
"Ticker":"GHS\/USD",
"Price":"3.3350",
"Open":"3.2650",
"High":"3.3500",
"Low":"3.2650",
"PercentagePriceChange":"0.8915",
"Movement":"3.0000",
"DateStamp":"2014\/07\/09",
"TimeStamp":"22:15:00"
},
{
"Name":"KES\/USD",
"Ticker":"KES\/USD",
"Price":"87.7000",
"Open":"86.2970",
"High":"87.6500",
"Low":"86.1800",
"PercentagePriceChange":"0.0661",
"Movement":"5.8000",
"DateStamp":"2014\/07\/09",
"TimeStamp":"22:15:00"
},
{
"Name":"MUR\/USD",
"Ticker":"MUR\/USD",
"Price":"30.2925",
"Open":"29.1460",
"High":"29.4300",
"Low":"29.0500",
"PercentagePriceChange":"-0.0909",
"Movement":"-2.7500",
"DateStamp":"2014\/07\/09",
"TimeStamp":"22:15:00"
},
{
"Name":"MWK\/USD",
"Ticker":"MWK\/USD",
"Price":"393.5000",
"Open":"393.3900",
"High":"393.3900",
"Low":"385.0000",
"PercentagePriceChange":"-0.2548",
"Movement":"-100.0000",
"DateStamp":"2014\/07\/09",
"TimeStamp":"22:15:00"
},
{
"Name":"NGN\/USD",
"Ticker":"NGN\/USD",
"Price":"162.3000",
"Open":"160.0600",
"High":"162.4000",
"Low":"160.0600",
"PercentagePriceChange":"0.2459",
"Movement":"40.0000",
"DateStamp":"2014\/07\/09",
"TimeStamp":"22:15:00"
},
{
"Name":"ZAR\/USD",
"Ticker":"ZAR\/USD",
"Price":"10.6659",
"Open":"10.6751",
"High":"10.7162",
"Low":"10.6523",
"PercentagePriceChange":"0.9840",
"Movement":"10.6000",
"DateStamp":"2014\/07\/09",
"TimeStamp":"22:15:00"
},
{
"Name":"ZMK\/USD",
"Ticker":"ZMK\/USD",
"Price":"47.7014",
"Open":"47.3850",
"High":"47.7000",
"Low":"46.8900",
"PercentagePriceChange":"0.0067",
"Movement":"0.3165",
"DateStamp":"2013\/07\/27",
"TimeStamp":"01:55:00"
}
]
}
Controller code
function HomeCtrl($scope, Page, $location, HomeExchangeList) {
$scope.rates = HomeExchangeList.getHomeExchange();
$scope.$on('HomeExchangeList', function (event, data) {
$scope.exchangeRates = data;
});
}
View
<ul id="home-rates" ng-repeat="rate in exchangeRates">
<li><span class='rate-symbol'>{{rate.Name}}</span><span class='rate-amount'>{{rate.Price}}</span></li>
</ul>
I would like to display the data returned by in the service in the view but it doesn't seem to be working. Please help
First, $http invocations all return a promise, not the result of your request. Your service should just return the result of the $http call, and your controller needs to attach a .success handler to receive the data and set it on the scope of your controller.
.service('HomeExchangeList', function ($rootScope, $http, $log) {
this.getHomeExchange = function() {
var rates = $http({
method: 'GET',
url: 'http://localhost:8080/feeds/homerates_android.php'
}).success(function (data) {
$log.log(data);
// removed your return data; it doesn't do anything, and this success is only added to log the result. if you don't need the log other than for debugging, get rid of this success handler too.
});
return rates;
};
})
function HomeCtrl($scope, Page, $location, HomeExchangeList) {
HomeExchangeList.getHomeExchange().success(function(data) {
$scope.exchangeRates = data;
});
}
Second, the root of your JSON is not an array, so you can't enumerate through just exchangeRates alone. Perhaps you meant exchangeRates.record.
try to assign data.record to $scope.exchangeRates instead of data... as data doesnt hold the array of records... it holds record which then holds the array
First of all, your service function always returns undefined:
var rates = ...,
return homeRates;
It should be
return rates;
Second, once that is fixed, the service doesn't return data. It returns a promise, and you can't iterate on a promise. What you need in the controller is:
HomeExchangeList.getHomeExchange().then(function(data) {
$scope.rates = data.record;
}
The call to $scope.$on doesn't make any sense. $scope.$on is used to listen for events. Not to get data from a promise.
And finally, your view must iterate over these retes, and not over exchangeRates:
ng-repeat="rate in rates">
Is it possible that listAction not call server function use AJAX , and the function will call to javascript function that return object ?
$('#ExecActDelays').jtable({
actions: {
listAction://get object from javascript no call server method
},
///...
can help me?
thank
i solve my proble, by edit jquery.jtable.js
my script:
function getObject(){
var result={};
result.Result="OK";
var array=[];
//...
{
array.push(new object...);
}
result.Records=array;
return result;
}
$('#ExecActDelays').jtable({
actions: {
listAction: getObject()
},
and in jquery.jtable.js i change
self._ajax({
url: loadUrl,
data: self._lastPostData,
success: function (data) {
self._hideBusy();
//Show the error message if server returns error
if (data.Result != 'OK') {
self._showError(data.Message);
return;
}
//Re-generate table rows
self._removeAllRows('reloading');
self._addRecordsToTable(data.Records);
self._onRecordsLoaded(data);
//Call complete callback
if (completeCallback) {
completeCallback();
}
},
error: function () {
self._hideBusy();
self._showError(self.options.messages.serverCommunicationError);
}
});
}
to:(line 442)
if (typeof loadUrl == "string") {
self._ajax({
url: loadUrl,
data: self._lastPostData,
success: function (data) {
self._hideBusy();
//Show the error message if server returns error
if (data.Result != 'OK') {
self._showError(data.Message);
return;
}
//Re-generate table rows
self._removeAllRows('reloading');
self._addRecordsToTable(data.Records);
self._onRecordsLoaded(data);
//Call complete callback
if (completeCallback) {
completeCallback();
}
},
error: function () {
self._hideBusy();
self._showError(self.options.messages.serverCommunicationError);
}
});
}
else {//no from server method
self._hideBusy();
//Re-generate table rows
self._removeAllRows('reloading');
self._addRecordsToTable(loadUrl.Records);
self._onRecordsLoaded(loadUrl);
//Call complete callback
if (completeCallback) {
completeCallback();
}
}
my complete my jquery.jtable.js
Try do this
function foo(){
return object;// JSON object
}
$('#ExecActDelays').jtable({
actions: {
listAction: foo()
},
///...
OR try this too
var object = null;
function foo(){
object = objectJSON;
}
$('#ExecActDelays').jtable({
actions: {
listAction: object
},
///...