Passing array of integers to webapi Method

Question

I am trying to pass an array of int but I can not get the value in the webapi method

var postData = { "deletedIds": deletedIds };

    $.ajax({
        type: "DELETE",
        traditional: true,
        dataType: 'json',
        contentType: 'application/json',
        cache: false,
        url: "/api/Management/Models",
        data: JSON.stringify(postData),
        success: ModelDeleted,
        error: ModelNotDeleted
    });

and in apiController :

[HttpDelete]
        public bool DeleteModel(int[] deletedIds)
        {
            return modelsRepository.DeleteModels(deletedIds);
        }

I tried to remove JSON.stringify but still not working

Muhammad Alaa
– Muhammad Alaa

2013-05-04 21:34:18 +00:00
Commented May 4, 2013 at 21:34 — Muhammad Alaa
– Muhammad Alaa, Commented May 4, 2013 at 21:34

Community · Accepted Answer · 2017-05-23 12:08:28Z

9

Your code looking pretty Ok to me. Please define structure of "deletedIds" object. one suggestion is to Use new Array() object to initialize deletedIds property and remove JSON.stringify() . A similar question asked here.

EDIT

Web API supports parsing content data in a variety of ways, but it does not deal with multiple posted content values. A solution for your problem could be to create a ViewModel with a property of int[] type. Like code below,

public class SimpleViewModel
{
    public int[] deletedIds{ get; set; }
}

//Controller
[HttpDelete]
    public bool DeleteModel(SimpleViewModel deletedIds)
    {
        return modelsRepository.DeleteModels(deletedIds.deletedIds);
    }

and use it as parameter type.

edited May 23, 2017 at 12:08

CommunityBot

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answered May 4, 2013 at 14:42

Shashank

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5 Comments

Muhammad Alaa Over a year ago

I tried to use new Array but still get null on webapi method parameter

Muhammad Alaa Over a year ago

Thanks for your reply but the question you referenced is not the same my code is working fine when I use action method in regular controller but when url is to webapi it can not get the data

Shashank Over a year ago

Use firebug to test post data.

Muhammad Alaa Over a year ago

the data is ok on client side but the problem is webapi uses different model binding than mvc

Shashank Over a year ago

decorating your action parameter with the [FromUri] attribute. this post may help you.

Muhammad Alaa · Accepted Answer · 2013-05-05 08:01:44Z

2

At last, based on @Shashank Answer it worked and the code modified as :

var deletedIds = new Array();

deletedIds.push(modelId);

var postData = { "DeletedIds": deletedIds };
$.ajax({
    type: "Delete",
    traditional: true,
    dataType: 'json',
    cache: false,
    url: "/api/Management/Models",
    data: postData,
    success: ModelDeleted,
    error: ModelNotDeleted
});

and the apiController :

[HttpDelete]
        public bool DeleteModels(DeleteViewModel dvm)
        {
            return modelsRepository.DeleteModels(dvm.DeletedIds);
        }

and for the DeleteViewModel :

public class DeleteViewModel
    {
        public int[] DeletedIds { get; set; }
    }

answered May 5, 2013 at 8:01

Muhammad Alaa

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Comments

Joanna Derks · Accepted Answer · 2013-05-04 17:02:38Z

0

I suspect that the stringify bit is messing up your object - have you tried assigning it to a variable to see if it's the expected formatting?

You're stringifying the whole thing at the moment:

{ "deletedIds": deletedIds }

while what you probably want to send as post body is this:

{ "deletedIds": JSON.stringify(deletedIds) }

answered May 4, 2013 at 17:02

Joanna Derks

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5 Comments

Joanna Derks Over a year ago

And either way, if your controller method expects integers, why stringify them in JS?

Muhammad Alaa Over a year ago

stringify was just a try I made up a test action method in a regular controller and it works mvc modelbinder works but webapi not !!

Joanna Derks Over a year ago

@MuhammadAlaa - post the exact JSON you're sending with the request. Is the controller method hit at all? Are you getting an empty array?

Muhammad Alaa Over a year ago

I tried to send static data just for test I get an empty array in the apicontroller method

Joanna Derks Over a year ago

@Muhammad Alaa - post here the JSON you are sending, static or not, otherwise I can't help you

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