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I am not sure how to validate a model in web API, when we receive it as a serialized string.

I use DataAnnotations on my model for validation purposes, and I usually do this:

public IHttpActionResult Save([FromBody] IEnumerable<User> users)
{
    if (!ModelState.IsValid)
    {
        return BadRequest(ModelState);
    }

    // ...
}

In this specific case, the "model" is coming from a serialized string:

public IHttpActionResult Save()
{
    string Data = HttpContext.Current.Request.Form["Data"];
    IEnumerable<User> users = JsonConvert.DeserializeObject<IEnumerable<User>>(Data);

    // ...
}

How could I possibly validate this?

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1

1 Answer 1

Reset to default
1

Following the example above:

        // Validate
        Validate<List<User>>(user);

        if (!ModelState.IsValid)
        {
            return new InvalidModelStateResult(ModelState, true, new DefaultContentNegotiator(), Request, new MediaTypeFormatter[] { new JsonMediaTypeFormatter() }); // Force JSON
        }

Thank you.

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