JMVC + ASP.NET Handler.ashx

General JavaScriptMVC Getting Started

ivancogje..

in General JavaScriptMVC » Getting Started • 2 years ago

Hey,

great job boys, JMVC is awesome.

I start working on a new project (medium size) and i was hoping to integrate JMVC in the solution.

Right now I'm doing some testings on JMVC + Asp.net handler as data provider.

This is the code:

findAll: function( params, success, error ){

$.ajax({

url: 'http://url/data.ashx',

type: 'get',

dataType: 'json',

data: params,

success: this.callback(['wrapMany',success]),

error: error//,

//fixture: "//emis/fixtures/places.json.get" //calculates the fixture path from the url and type.

});

the handler is doing this:

context.Response.ContentType = "application/json";

context.Response.Write("[ {'name': 'Take Out Trash', 'description': 'To the curb!', 'id': 5}]");

and seems everything is OK but data is not displayed.

Firebug shows that everything is loaded but the UI is not rendered.

Can you give me some direction on this issue?

thanks,

Ivanco Gjeorgjiev

Replies(3)

Justin Me..

Re: JMVC + ASP.NET Handler.ashx

2 years ago

make sure you are getting data back from jQuery, and that success is getting called by replacing your code with:

findAll: function( params, success, error ){

var self = this;

$.ajax({

url: 'http://url/data.ashx',

type: 'get',

dataType: 'json',

data: params,

success: function(data){ console.log(data); success(self.wrapMany(data)) },

error: error//,

//fixture: "//emis/fixtures/places.json.get" //calculates the fixture path from the url and type.

});

If you see output, check the success handler.

BlessYAHU

Re: JMVC + ASP.NET Handler.ashx

2 years ago

You might also want to check Econsia's post on using jQuery's ajax with ASP net handlers/webservices: http://encosia.com/2008/03/27/using-jquery-to-consume-aspnet-json-web-services/

_______________________
I lurk to learn..

A'braham Barakhyahu

ivancogje..

Re: JMVC + ASP.NET Handler.ashx

2 years ago

Thanks for the replays,

I solve the problem.

Here is what I did:

1. setting contentType: "application/json; charset=utf-8" solve the problem for me.

here is copy/paste of the function:

findAll: function( params, success, error ){

$.ajax({

url: 'http://url/data.ashx',

type: 'GET',

contentType: "application/json; charset=utf-8",

dataType: 'json',

data: params,

success:this.callback(['wrapMany',success]),

error: error

});

2. On the asp.net handler side here is the code:

public void ProcessRequest(HttpContext context)

{

context.Response.Clear();

context.Response.ClearHeaders();

places p = new places();

p.Id = "2";

p.Regionalcode = "2";

List<places> l= new List<places>();

l.Add(p);

context.Response.ContentType = "application/json";

string out_ = Jayrock.Json.Conversion.JsonConvert.ExportToString(l);

context.Response.Write(out_);

}

I had a bit of a problem with JSON syntax ( WrapMany function was throwing error "length is undefined")

but i find out that if you sand only one object that object should be sand as a list of one object - [{"id":"2","regionalcode":"2"}]

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