ASP.NET JSON serialize DateTime to the following format "/Date(1251877601000)/". Pls, help parse this string into the java(GWT) Date object.
At this time the solution I came with is parsing with regex, extract long.. but then I cannot push long through JSNI.
function FixJsonDates(data) {
//microsoft script service perform the following to fix the dates.
//json date:\/Date(1317307437667-0400)\/"
//javasccript format required: new Date(1317307437667-0400)
//copied from micrsoft generated fiel.
var _dateRegEx = new RegExp('(^|[^\\\\])\\"\\\\/Date\\((-?[0-9]+)(?:[a-zA-Z]|(?:\\+|-)[0-9]{4})?\\)\\\\/\\"', 'g');
var exp = data.replace(_dateRegEx, "$1new Date($2)");
return eval(exp);
}
The answer to this question is, use nuget to obtain JSON.NET then use this inside your JsonResult method:
return Json(JsonConvert.SerializeObject(/* JSON OBJECT TO SEND TO VIEW */));
inside your view simple do this in javascript:
JSON.parse(#Html.Raw(Model.data))
If it comes via a view model that is or if it is an ajax call:
var request = $.ajax({ url: "#Url.Action("SomeAjaxAction", "SomeController")", dataType: "json"});
request.done(function (data, result) { JSON.parse(data); });
Related
This is only for debugging purpose. Only returning JSON, outputs unreadable JSON string on webpage. Is there any quick solution to view formatted json on webpage?
Looking for a C# function that will take json object and return formatted output as string from my action method.
Just change JSON global settings in your Global.asax file.
GlobalConfiguration.Configuration.Formatters.JsonFormatter.SerializerSettings = new JsonSerializerSettings
{
Formatting = Formatting.Indented
};
It should produce indented JSON for all your Web API endpoints.
Then you can inspect resulting JSON directly in browser or using some HTTP traffic capturing tool like Fiddler.
Use the JavaScript JSON.Stringify() function. Example:
$.ajax({
method: "POST",
url: "/yourController/yourAction",
data: { name: "John", location: "Boston" }
}).done(function( data ) {
alert(JSON.Stringify(data));
});
Good day! I need to render a model's attributes to JSON so I can pass them into a template.
Model:
var UserInfo = Backbone.Model.extend({
url: appConfig.baseURL + "users/",
});
Template:
<script type="text/html" class="template" id="profile-form">
<h2 class="ui-li-heading"><%= username %></h2>
<p class="ui-li-desc"><strong><%= phone %></strong></p>
</script>
View:
var ProfilePageView = Backbone.View.extend({
events: {
'click #edit': "edit"
},
initialize: function () {
this.template = $.tpl['profile-form'];
var user = new UserInfo()
user.fetch({
data: $.param({email: localStorage.getItem('user_email')}),
type: 'POST'
});
console.log(user) //returns correct object with attrs
console.log(user.toJSON()) //returns empty object
},
render: function (eventName) {
$(this.el).html(this.template());
},
edit: function () {
window.workspace.navigate('#account/edit', { trigger: true});
}
});
When i put in console something like this, user.toJSON() returns correct data
var user = new UserInfo();
user.fetch({
data: $.param({email: localStorage.getItem('user_email')}),
type: 'POST'
});
But when i put it to my view, its returns Object {}.
Where is a mistake or tell me how can differently pass to the template data received from the server in json format? Thanks!
You appear to have two problems. fetch is asyncronous, so you need to use a callback to use the information. But first, an explanation about toJSON. .toJSON() doesn't actually return a JSON string, it returns an object that is what you want JSON to stringify. This allows you to modify the toJSON method to customize what attributes will be taken from your model or collection and added to the JSON string representation of your model. Here is a quotation from the Backbone.js docs:
toJSON collection.toJSON([options])
Return a shallow copy of the model's attributes for JSON
stringification. This can be used for persistence, serialization, or
for augmentation before being sent to the server. The name of this
method is a bit confusing, as it doesn't actually return a JSON string
— but I'm afraid that it's the way that the JavaScript API for
JSON.stringify works.
So you should replace this line in your code
console.log(user.toJSON())
with this one
console.log(JSON.stringify(user))
The object that you saw was returned by toJSON will then be turned into JSON.
Now, even after you do that, it won't work properly, because you will execute the console.log before you get the data for your model from fetch. fetch is asynchronous, so you need to call any code you want to be executed after the fetch is done in the success callback:
user.fetch({
data: $.param({email: localStorage.getItem('user_email')}),
type: 'POST',
success: function(){
console.log(user);
console.log(JSON.stringify(user));
}
});
I’m using jQuery to make an AJAX call to Node.js to get some JSON. The JSON is actually “built” in a Python child_process called by Node. I see that the JSON is being passed back to the browser, but I can’t seem to parse it—-although I can parse JSONP from YQL queries.
The web page making the call is on the same server as Node, so I don’t believe I need JSONP in this case.
Here is the code:
index.html (snippet)
function getData() {
$.ajax({
url: 'http://127.0.0.1:3000',
dataType: 'json',
success: function(data) {
$("#results").html(data);
alert(data.engineURL); // alerts: undefined
}
});
}
server.js
function run(callBack) {
var spawn = require('child_process').spawn,
child = spawn('python',['test.py']);
var resp = '';
child.stdout.on('data', function(data) {
resp = data.toString();
});
child.on('close', function() {
callBack(resp);
});
}
http.createServer(function(request, response) {
run(function(data) {
response.writeHead(200, {
'Content-Type':
'application/json',
'Access-Control-Allow-Origin' : '*' });
response.write(JSON.stringify(data));
response.end();
});
}).listen(PORT, HOST);
test.py
import json
print json.dumps({'engineName' : 'Google', 'engineURL' : 'http://www.google.com'})
After the AJAX call comes back, I execute the following:
$("#results").html(data);
and it prints the following on the web page:
{“engineURL": "http://www.google.com", "engineName": "Google"}
However, when I try and parse the JSON as follows:
alert(data.engineURL);
I get undefined. I’m almost thinking that I’m not actually passing a JSON Object back, but I’m not sure.
Could anyone advise if I’m doing something wrong building the JSON in Python, passing the JSON back from Node, or simply not parsing the JSON correctly on the web page?
Thanks.
I’m almost thinking that I’m not actually passing a JSON Object back, but I’m not sure.
Yes, the ajax response is a string. To get an object, you have to parse that JSON string into an object. There are two ways to do that:
data = $.parseJSON(data);
Or, the recommended approach, specify dataType: 'json' in your $.ajax call. This way jQuery will implicitly call $.parseJSON on the response before passing it to the callback. Also, if you're using $.get, you can replace it with $.getJSON.
Also:
child.stdout.on('data', function(data) {
resp = data.toString();
// ^ should be +=
});
The data event's callback receives chunks of data, you should concatenate it with what you've already received. You probably haven't had problems with that yet because your JSON is small and comes in a single chunk most of the time, but do not rely on it, do the proper concatenation to be sure that your data contains all the chunks and not just the last one.
http://www.hulu.com/mozart/v1.h2o/shows/54/episodes?show_id=54&sort=seasons_and_release&video_type=episode&_language=en&_region=us&items_per_page=32&position=1&_user_pgid=1&_device_id=1&access_token=sTEbtl-07BZKws2iXobQFRWRzsA%3D8gQbJIixd5b6b896ddf9e57468c8f629c56ca14bcaba6e85ec2664236998c57f6dce5759ae4bbceb1f6442e53302cb02e8ba121f
Need to convert this JSON URL to HTML URL! If we hit the above URL am getting only the JSON script and i want to convert it into HTML table where i can apply xpath to fetch the data.
You have to parse the response by yourself. jQuery can do that: (short example)
var doc = $('#table');
$.getJSON('url', function (res) {
$.each(res, function (x) {
doc.append('<tr>');
doc.append('<td>'+x.description+'</td>');
doc.append('</tr>');
});
});
I can successfully make a jQuery Ajax call into my C# Controller and receive back an XML string, but I need to in turn gather some Portfolio dates and package them up into a JSON object so I can send them back into another C# Controller.
If it's a C# issue, then I apologize if I'm in the wrong forum...however I'd like to pass my JSON object into the server side controller ..
Here's what I'm trying to do:
var nodeDatesJson = {"nodedates": // CREATE JSON OBJECT OF DATE STRINGS
{ "date": 01/20/2012,
"date": "01/21/2012" } };
getTradeContribs(thisPfId, nodeDatesJson.nodedates.date);
Now call the next js function:
function getTradeContribs(pfid, nodedates) {
//alert(nodedates);
$.ajax({ // GET TRADE CONTRIBS FROM SERVER !!
url: "/Portfolios/getTradeContribs?portfolioId=" + pfid + "&nodedates=" + nodedates,
type: "GET", // or "PUT"
dataType: "json",
async: true,
success: parseTradeContribs,
error: function (error) {
alert("failed in opening Trade Contribs file !!!");
}
});
}
function parseTradeContribs(data) {
alert("In parseTradeContribs..." );
$(data).find("Trade").each(function(){
$(".TradeContrib").append($(this).text());
})
}
and my C# controller is trying to read in the "nodedates" JSON object, but HOW do I read it in ?
public string getTradeContribs(string portfolioId, **string nodedates**)
{
// Build Portfolio Select request here !
RequestBuilder rzrRequest = new RequestBuilder();
// REQUEST FOR CONTRIBUTIONS !
// ... more code here..
xmlResponse.LoadXml(contribResponse);
string jsonTest = #" {""nodedates"": ""date"":""01/01/2012""}";
//return xmlResponse.OuterXml; // WORKS FINE
return "<Trade><TradeId>1234</TradeId></Trade>"; // RETURN TEST XML STR
}
thank you in advance...
Bob
The best way to receive a list of dates in a MVC action is to bind to a collection. What this means is that you should put your dates and other attributes in a form with the following naming convention:
<input type="hidden" name="dates" value="2012-1-20" />
<input type="hidden" name="dates" value="2012-1-21" />
Then you should serialize this form (look into jquery's docs for this) and post its data to your action, which will be something along the lines of:
public ActionResult getTradeContribs(string portfolioId, IList<DateTime> dates) {
// Do your work here
}
You should really take a look into MVC Model binding and collection binding as well:
Model binding to a list
Model binding objects
Also, if I may, your javascript object has two properties with the same name, which is probably not what you mean. If you want to have multiple dates stored somewhere in a object, you should use an array:
var nodeDatesJson = {"nodedates":
[ "01/20/2012", "01/21/2012" ] };
Sorry, but I didn't understand your doubt very well...but here it goes:
Maybe you should pass the json, well-formatted, as a string and use some C# parser.
This way you can get a object in server-side as same as the Json object in javascript.
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