模型类上的数据属性未在Web Api中发布

Question

I have written following code to post JSon data to Web Api Class

var product = '{Id: 2012, Name: 'test', Category: 'My Category', Price: 99.5}'

$.ajax({
url: 'api/products',
type: 'POST',
data: JSON.stringify(product),
dataType: 'json',
contentType: "application/json",
success: function (data) {
}
});

On Server side i have defined a Post Method with following code

  public HttpResponseMessage Post(Product p)
    {
       //some code to manipulate p and return response 
       return response;
    }

The Product is Model class containing Id, Name, Category and Price attribute.

Problem :- When in Model class i add attribute of Required on Id, Name and other properties, data does not get posted and Server return 500 Error with a message ID is Required?

What could be the possible reason of problem or in other words how to post Json data for a model having properties with Attributes.

Answer 1

You're double-stringifying the product data, and you shouldn't be stringifying it at all; JQuery's ajax method takes a JSON object for data.

var product = {Id: 2012, Name: 'test', Category: 'My Category', Price: 99.5};

$.ajax({
    url: 'api/products',
    type: 'POST',
    data: product,
    dataType: 'json',
    contentType: "application/json",
    success: function (data) {
    }
});

Answer 2

Its a better practice to decorate the serverside method which is accepting jquery post with a HttpPost attribute.

[HttpPost]
  public HttpResponseMessage Post(Product p)
{
   //some code to manipulate p and return response 
   return response;
}

and follow the same as per dbaseman