I have a test script to update a county drop down list whenever the year or state is updated. When I used a literal string when year is selected, the county list updated fine. However when I tried to the county list using an ajax call and used a (var options) to build the list, the drop down list value changed to an empty list even though I verified the value of (var options) contains valid drop down list options.
Please help!
Thanks,
$('#State').on("change", function () {
var state = $('#State').val();
var year = $('#Year').val();
var obj = {
state: state,
year:year
};
alert("State changed:" + state + ":" + year);
AjaxCall('/RIC/GetCounties', JSON.stringify(obj), 'POST').done
(function (response) {
if (response) {
$('#DataId').html("<option value='test'>Test</option>");
var options = '';
options += "<option value='Select'>Select</option>\n";
for (i in response) {
options += "<option value='" + response[i].DataId + "'>" + response[i].County + "</option>\n";
}
$('#DataId').html("<option value='Select'>Select-S</option><option value='16'>Alameda-S</option>");
alert("Statitical Areas(S): " + options);
//$('#DataId').html(options); //This should work. How to get the value of options into the string
//$('#DataId').append(options);
}
}).fail(function (error) {
alert("County Error:" + error.StatusText);
});
});
$('#Year').on("change", function () {
var state = $('#State').val();
var year = $('#Year').val();
var obj = {
state: state,
year: year
};
alert("Year changed:" + state +":"+ year);
AjaxCall('/RIC/GetCounties', JSON.stringify(obj), 'POST').done
(function (response) {
if (response) {
$('#DataId').html("<option value='test'>Test</option>");
var options = '';
options += "<option value='Select'>Select</option>\n";
for (i in response) {
options += "<option value='" + response[i].DataId + "'>" + response[i].County + "</option>\n";
}
//$('#DataId').html("<option value='Select'>Select-Y</option><option value='16'>Alameda-Y</option>");
$('#DataId').html(options); //This should work. How to get the value of options into the string
alert("Statitical Areas(Y): " + options);
//$('#DataId').append(options);
}
}).fail(function (error) {
alert("County Error:" + error.StatusText);
});
});
});
function AjaxCall(url, data, type) {
return $.ajax({
url: url,
type: type ? type : 'GET',
data: data,
contentType: 'application/json'
});
}
Instead of using another function to call your $.ajax why not call it immediately. There’s no performance improvement on what you had done. Try to revert your code and just add async property if you want to wait the response before proceeding to your lower conditions.
I hope this will help you
Related
i have an array of stores, where the address and some other things are stored.
Now I want to iterate through this array and geocode the lat / lng coords and save them to the database.
With the code below I get double or triple entries of the same store. Do I miss something with the scope here?
Thanks!
var promises = [];
data.forEach(function (element, index)
{
var addressString = element.plz + " " + element.stadt + "," + element.adresse;
var url = encodeURI("https://maps.googleapis.com/maps/api/geocode/json?address=" +
addressString);
var promise = Parse.Cloud.httpRequest({
method: "GET",
url:url
}).then(function (http) //SUCCESS
{
var geocodedObject = new Parse.Object("GeocodedStores");
geocodedObject.set("storeID", element.id);
geocodedObject.set("Latitude", http.data.results[0].geometry.location.lat);
geocodedObject.set("Longitude", http.data.results[0].geometry.location.lng);
return geocodedObject.save(null, {
useMasterKey: true
});
},
function (http, error)
{
response.error(error);
});
promises.push(promise);
});
return Parse.Promise.when(promises);
Finally found a working solution. It looked like it was a problem with the scope. I put the code in a seperate function and added this returned promise to an array.
var fn = function(element, geocodedObject)
{
var addressString = element.plz + " " + element.stadt + "," + element.adresse;
var url = encodeURI("https://maps.googleapis.com/maps/api/geocode/json?address=" +
addressString);
Parse.Cloud.httpRequest({
method: "GET",
url: url
}).then(function(http)
{
geocodedObject.set("storeID", element.id);
geocodedObject.set("Latitude", http.data.results[0].geometry.location.lat);
geocodedObject.set("Longitude", http.data.results[0].geometry.location.lng);
geocodedObject.set("address", addressString);
return geocodedObject.save(null, {
useMasterKey: true
});
});
}
var promises = [];
for (var k = 0;k<data.length;k++)
{
var geocodedObject = new Parse.Object("GeocodedStores");
promises.push(fn(data[k], geocodedObject));
}
Parse.Promise.when(promises).then(function () {
response.success("DONE");
});
Find my code below which working very fine. but only problem facing by me is that save event is not working for me.Also you can see my log file in the picture. In each method i tried success and error function which working fine as you can see in picture. I tried this code alot but still... it is not working for me.
It always shows error message.
Code :
Parse.Cloud.afterSave("HouserDetailed", function(request, response)
{
var obj = request.object.id;
//console.log(obj);
// code !
var houserdetailed = new Parse.Object("HouserDetailed");
var query = new Parse.Query("HouserDetailed");
query.equalTo("objectId", obj);
query.first({
success: function(results) {
//alert("updates objectId " +request.object.id + " " + "input" + " "+ request.object.bet_title );
var bet_title = results.get("bet_title");
var match_id = results.get("match_id");
var level_coin = results.get("level_coin");
if(bet_title !== "false")
{
console.log("bet_title :- "+bet_title+", match_id:- "+match_id+", level_coin:- "+level_coin);
// nested query
var better = new Parse.Object("Better");
var query1 = new Parse.Query("Better");
query1.equalTo("match_id", match_id);
query1.first({
success: function(result){
var bet_title_better = result.get("bet_title");
var user_id = result.get("user_id");
var bet_OnNoOfticket = result.get("bet_OnNoOfticket");
var bet_price = result.get("bet_price");
var money_got = bet_OnNoOfticket * bet_price;
console.log("bet_title_better :-"+bet_title_better);
if(bet_title !== bet_title_better)
{
console.log("Condition does not match!");
}
else
{
console.log("Condition match!" + "money got :- "+money_got);
// checking for existing user in parse DB
var wallet = new Parse.Object("Wallet");
var query2 = new Parse.Query("Wallet");
query2.equalTo("user_id", user_id);
query2.first({
success: function(result)
{
console.log("User found");
var wallet_coins_number = result.get("wallet_coins_number");
var objectId = result.get("objectId");
total_amount = +wallet_coins_number + +money_got;
console.log("Total amount got :- " + total_amount );
// saving amount in wallet
var Wallet = Parse.Object.extend("Wallet");
var wallet = new Wallet();
wallet.set("user_id", user_id);
wallet.set("wallet_coins_number", total_amount);
wallet.save(null, {
success: function(wallet){
console.log("amount saved in wallet!");
},
error: function(wallet)
{
console.log("amount not saved in wallet!");
}
});
},
error: function(error)
{
console.log("User not found");
}
});
}
},error: function(error)
{
}
});
}
// nested query end
},
error: function(error) {
console.log("Error: " + error.code + " " + error.message);
}
});
// code !
});][1]][1]
I don't see any log, probably it would tell you what is wrong. But you are attempting to save existing ParseObject with dirty objectId, which is bad idea. You are not allowed to change objectId of existing object. Try to remove wallet.set("objectId", objectId) from your code.
You should not use result.get("objectId") either, use result.id instead.
I'm trying to use promise to get in promise2
But if I have an object Widgets with several elements in it...
Why can't I have been able to get my console.log's output
Parse.Cloud.define("extract", function(request, response) {
var user = request.params.user;
var promise = Parse.Promise.as();
[...]
}).then(function() {
return query.find().then(function(results) {
_.each(results, function(result) {
[...]
Widget.objectId = result.id;
Widgets[timestamp] = Widget;
});
return promise;
}).then(function(results) {
for (var key in Widgets) {
var Widget = Widgets[key];
var widget_data = Widgets[key].widget_data;
var promise2 = Parse.Promise.as();
promise2 = promise2.then(function() {
return Parse.Cloud.run('extractWidgetData', {
'widget_data': widget_data,
}).then(function(newresult) {
Widgets[key].data = newresult.data;
console.log('--------WHY NOT HERE ALL TIME ?--------');
});
});
return promise2;
}
}).then(function() {
response.success(Widgets);
},
function(error) {
response.error("Error: " + error.code + " " + error.message);
});
});
});
I'm becoming crazy to run this damn Code
EDIT : I finally followed Roamer's advices to implement something but I'm not sure if it's the good way to work with Promise in series...
Parse.Cloud.define("extract", function(request, response) {
var user = request.params.user;
var Widgets = {};
...
... .then(function() {
return query.find().then(function(results) {
return Parse.Promise.when(results.map(function(result) {
var Widget = ...;//some transform of `result`
Widget.id = ...;//some transform of `result`
var timestamp = createdAtDate.getTime();
...
return Parse.Cloud.run('extractData', {
'widget_data': Widget.widget_data,
}).then(function(newresult) {
Widget.stat = newresult.stats;
return Widget;//<<<<<<< important! This ensures that results.map() returns an array of promises, each of which delivers a Widget objects.
});
}));
}).then(function() {
var promisedWidget = Array.prototype.slice.apply(arguments);
return Parse.Promise.when(promisedWidget.map(function(Widget) {
return Parse.Cloud.run('getWineStats', {
'id': Widget.data.id
}).then(function(stat) {
Widget.stat = stat;
return Widget;
});
}));
}).then(function() {
var promisedWidget = Array.prototype.slice.apply(arguments);
_.each(promisedWidget, function(Widget) {
var createdAtObject = Widget.createdAt;
var strDate = createdAtObject.toString();
var createdAtDate = new Date(strDate);
timestamp = createdAtDate.getTime();
Widgets[timestamp] = Widget;
});
return Widgets;
}).then(function(Widgets) {
response.success(Widgets);
},
function(error) {
response.error("Error: " + error.code + " " + error.message);
});
});
});
First, I echo Bergi's comment on indentation/matching parenthesis.
But ignoring that for a moment, at the heart of the code you have return query.find().then(...).then(...).then(...) but the flow from the first .then() to the second is incorrect. Besides which, only two .then()s are necessary as the code in the first then is synchronous, so can be merged with the second.
Delete the two lines above for (var key in Widgets) { then at least Widgets will be available to be processed further.
Going slightly further, you should be able to do all the required processing of results in a single loop. There seems to be little pont in building Widgets with _.each(...) then looping through the resulting object with for (var key in Widgets) {...}.
In the single loop, you probably want a Parse.Promise.when(results.map(...)) pattern, each turn of the map returning a promise of a Widget. This way, you are passing the required data down the promise chain rather than building a Widgets object in an outer scope.
Do all this and you will end up with something like this :
Parse.Cloud.define("extract", function(request, response) {
var user = request.params.user;
...
... .then(function() {
return query.find().then(function(results) {
return Parse.Promise.when(results.map(function(result) {
var Widget = ...;//some transform of `result`
...
return Parse.Cloud.run('extractWidgetData', {
'widget_data': Widget.widget_data,
}).then(function(newresult) {
Widget.data = newresult.data;
return Widget;//<<<<<<< important! This ensures that results.map() returns an array of promises, each of which delivers a Widget objects.
});
}));
}).then(function() {
//Here, compose the required Widgets array from this function's arguments
var Widgets = Array.prototype.slice.apply(arguments);//Yay, we got Widgets
response.success(Widgets);
}, function(error) {
response.error("Error: " + error.code + " " + error.message);
});
});
});
I'm able to parse JSON with ajax, but at the moment it shows all the names out of the JSON.
I want only one name viewed and after an amount of time I want another one viewed and so on..
Ajax code:
$(document).ready(function(){
parseJson();
});
function parseJson(){
$.ajax({
url : 'data/members.json',
dataType : 'json',
success : function(data) {
succes(data);
},
error: function(){
window.alert("error");
}
});
};
function succes(dataObj){
var counter = 1;
$.each(dataObj.Members.Member, function(indexData, valueData){
var htmlString = "";
htmlString += '<article class="memberInfo" data-object="' + counter + '">';
htmlString += "<div class=''><p>" + valueData.Firstname + ' ' + valueData.Surname + "</p></div>";
htmlString += "</article>";
$("#members").append(htmlString);
counter++;
});
}
Rather than use .append you can use .html and set a staggering timeout so that it cycles through the names that get displayed:
var timer = 0;
$.each(...
setTimeout(function () {
var htmlString = "";
/* snip */
$("#members").html(htmlString);
}, timer + (indexData * 2000));
});
I have 2 lists in my application and the user is supposed to drag and drop items from one list to another.
When the user drops an element from one of the lists to the other list a request has to be made to the server side code to update a field in the database (SelectedForDiscussion).
This is the code in my controller:
$scope.$watch("questionsDiscuss", function (value) {
var question = $.Enumerable.From($scope.questionsDiscuss).Where(function (item) { return !item.SelectedForDiscussion }).FirstOrDefault()
if (question != undefined) {
questionSelectionService.UpdateQuestionSelectionStatus(question.Id, true)
.then(function (output) {
var question = $.Enumerable.From($scope.questionsDiscuss)
.Where(function (item) { return item.Id == output.data.questionId })
.FirstOrDefault();
var index = $.Enumerable.From($scope.questionsDiscuss).IndexOf(question);
if (question != undefined)
if (output.data.result != "success") {
$scope.questionsDiscuss.splice(index, 1);
$scope.questionsReceived.splice(0, 0, question);
}
else {
question.SelectedForDiscussion = true;
$scope.questionsDiscuss[index] = question;
}
});
}
else {
var question = $.Enumerable.From($scope.questionsReceived).Where(function (item) { return item.SelectedForDiscussion }).FirstOrDefault();
if (question != undefined) {
questionSelectionService.UpdateQuestionSelectionStatus(question.Id, false)
.then(function (output) {
var question = $.Enumerable.From($scope.questionsReceived)
.Where(function (item) { return item.Id == output.data.questionId })
.FirstOrDefault();
var index = $.Enumerable.From($scope.questionsReceived).IndexOf(question);
if (question != undefined)
if (output.data.result != "success") {
$scope.questionsReceived.splice(index, 1);
$scope.questionsDiscuss.splice(0, 0, question);
}
else {
question.SelectedForDiscussion = false;
$scope.questionsReceived[index] = question;
}
});
}
}
}, true);
I have 4 javascript breakpoint placed at the following lines within Firebug:
2 of them at the following lines:
if (question != undefined) {
One at:
var question = $.Enumerable.From($scope.questionsDiscuss)
.Where(function (item) {
return item.Id == output.data.questionId
})
.FirstOrDefault();
And the other at:
var question = $.Enumerable.From($scope.questionsReceived)
.Where(function (item) {
return item.Id == output.data.questionId
})
.FirstOrDefault();
The following happens:
The breakpoints at:
if (question != undefined) {
are always reached.
The breakpoint at
var question = $.Enumerable.From($scope.questionsDiscuss)
.Where(function (item) {
return item.Id == output.data.questionId
})
.FirstOrDefault();
is also reached.
The other is never reached.
Both responses are OK(response code 200).
Everything should work perfectly but the then clause in the second promise is never reached.
Can anyone tell me what I am doing wrong?
The serverside appplication is an ASP.NET MVC application written in C#.
Edit 1:
I figured out why this was happening and I have a work around for it. I am stil interested in an actual solution.
The problem is angularjs throws an error then swallows it when calling $http for the second time. The error is:
digest alredy in progress
I think this is because in my directive I have this code:
dndfunc = function (scope, element, attrs) {
// contains the args for this component
var args = attrs.dndBetweenList.split(',');
// contains the args for the target
var targetArgs = $('#' + args[1]).attr('dnd-between-list').split(',');
// variables used for dnd
var toUpdate;
var target;
var startIndex = -1;
// watch the model, so we always know what element
// is at a specific position
scope.$watch(args[0], function (value) {
toUpdate = value;
}, true);
// also watch for changes in the target list
scope.$watch(targetArgs[0], function (value) {
target = value;
}, true);
// use jquery to make the element sortable (dnd). This is called
// when the element is rendered
$(element[0]).sortable({
items: 'div',
start: function (event, ui) {
// on start we define where the item is dragged from
startIndex = ($(ui.item).index());
},
stop: function (event, ui) {
var newParent = ui.item[0].parentNode.id;
// on stop we determine the new index of the
// item and store it there
var newIndex = ($(ui.item).index());
var toMove = toUpdate[startIndex];
// we need to remove him from the configured model
toUpdate.splice(startIndex, 1);
if (newParent == args[1]) {
// and add it to the linked list
target.splice(newIndex, 0, toMove);
} else {
toUpdate.splice(newIndex, 0, toMove);
}
// we move items in the array, if we want
// to trigger an update in angular use $apply()
// since we're outside angulars lifecycle
scope.$apply(targetArgs[0]);
scope.$apply(args[0]);
},
connectWith: '#' + args[1]
})
}
And there are 2 calls to apply at the end which trigger a new digest cycle I think.
Anyway I fixed it by adding this call before the calls to apply:
if (scope.updateLists != undefined)
scope.updateLists();
And moved all the code from the watch into the updateLists function.
Also because people have mentioned the service as having something to do with it I am pasting the relevant code within it:
GetQuestionsReceived: function (eid, criteria, page, rows) {
var promise = this.GetQuestionsReceivedInternal(eid,criteria, page, rows).then(function (response) {
// The return value gets picked up by the then in the controller.
return response;
});
// Return the promise to the controller
return promise;
},
GetQuestionsReceivedInternal: function (eid, criteria, page, rows) {
return $http({ method: 'GET',
url: '../QuestionManagement/GetQuestions?eventId='+eid+'&page=1&rows=5&'+serialize(criteria)
}).
success(function (data, status, headers, config) {
// this callback will be called asynchronously
// when the response is available
results = data;
}).
error(function (data, status, headers, config) {
// called asynchronously if an error occurs
// or server returns response with an error status.
if (window.console && console.log) {
console.log("Could not obtain questions received. Error:" + data + "Status:" + status + "Headers:" + headers + "Config:" + config);
}
});
},
GetQuestionsDiscuss: function (eid,criteria, page, rows) {
var promise = this.GetQuestionsDiscussInternal(eid,criteria, page, rows).then(function (response) {
// The return value gets picked up by the then in the controller.
return response;
});
// Return the promise to the controller
return promise;
},
GetQuestionsDiscussInternal: function (eid,criteria, page, rows) {
return $http({ method: 'GET',
url: '../QuestionManagement/GetQuestions?eventId=' + eid + '&page=1&rows=5&' + serialize(criteria)
}).
success(function (data, status, headers, config) {
// this callback will be called asynchronously
// when the response is available
response = data;
}).
error(function (data, status, headers, config) {
// called asynchronously if an error occurs
// or server returns response with an error status.
if (window.console && console.log) {
console.log("Could not obtain questions received. Error:" + data + "Status:" + status + "Headers:" + headers + "Config:" + config);
}
});
},
You have two very similar blocks of code, which could be generalized and placed in a function wrapper, leaving behind a very simple calling function.
If you can get everything into that form, then I think you will find it easier to debug.
Here is an attempt to do so :
function updateSelectionStatus(qA, qB, bool) {
var en = $.Enumerable.From(qA);
var question = en.Where(function (item) {
return bool ? !item.SelectedForDiscussion : item.SelectedForDiscussion;
}).FirstOrDefault();
if(question) {
questionSelectionService.UpdateQuestionSelectionStatus(question.Id, bool).then(function (output) {
if (output.data.result == "success") {
question.SelectedForDiscussion = bool;
}
else {
qA.splice(en.IndexOf(question), 1);
qB.unshift(question);
}
});
}
return question;
}
$scope.$watch("questionsDiscuss", function (value) {
if (!updateSelectionStatus($scope.questionsDiscuss, $scope.questionsReceived, true) {
updateSelectionStatus($scope.questionsReceived, $scope.questionsDiscuss, false);
}
}, true);
I may have made some false assumptions and simplified too much (eg. purging the inner $.Enumerable.From, which appears to reselect the same question as the outer), so you may well need to rework my code.
I'm advocating a principle here, rather than offering a solution.