ASP.Net MVC: How to correctly pass in string as data to POST call in AngularJS?

Question

On my front end, I have a simple button:

<input class="btn" value="Something" ng-click="doStuff('myNameisEarl')" />

My Angular.js is as follows:

$scope.doStuff = function (name) {

    $http.post('/api/callToApi', name)
    .then(function (response) {
        // Do something with response
    }, function () {
        console.log("Failure");
    });
}

Then my back end C# Controller is:

[HttpPost("api/callToApi")]
public IActionResult Get(string name)
{
    return Ok(_context.MyDBTable.Where(a => a.Name.Equals(name)));
}

Unfortunately, when I pass in name from my angular code to the C# function, string name is null.

Why is that? What's going wrong here?

Win · Accepted Answer · 2016-10-14 13:57:22Z

1

Since you are posting data from body which we normally do, you can explicit say [FromBody] in action method.

$scope.doStuff = function (name) {
    var data = JSON.stringify({name: name}); // Convert to a JSON string
    $http.post('/api/callToApi', data)
    .then(function (response) {
        console.log("Success");
    }, function () {
        console.log("Failure");
    });
}

[HttpPost("api/callToApi")]
public IActionResult Post([FromBody] string name)
{
    return Ok(_context.MyDBTable.Where(a => a.Name.Equals(name)));
}

FYI: You want to name action method as Post instead of Get for best practice.

edited Oct 14, 2016 at 13:57

answered Oct 13, 2016 at 19:40

Win

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2 Comments

Win Over a year ago

@RamSingh he is using the POST method, if you check the code carefully. My answer is also about the Post. I'm not really understanding your comment. Could you please elaborate more?

Ram Singh Over a year ago

FYI: You want to name action method as Post instead of Get for best practice you added this line so i added my comment. skip if you were trying to add more info. i am going to delete it in that case

Shyju · Accepted Answer · 2016-10-13 19:56:37Z

0

You can send the name in the querystring. the querystring key should match with the parameter name.

This should work.

$scope.doStuff = function (name) {

    $http.post('/api/callToApi?name='+ name )
    .then(function (response) {

           var responseData = response.data;
           console.log(responseData);

        }, function () {
        console.log("Failure");
    });
}

edited Oct 13, 2016 at 19:56

answered Oct 13, 2016 at 19:40

Shyju

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Comments

Fehintola · Accepted Answer · 2016-10-14 15:26:25Z

0

I think this should solve the problem

$.ajax({
        url: '/api/controller/action',
        type: "POST",
        data: {name: variable}
    }).done((data) => {
        successCallBack(data);
    }).fail((response) => {
        failureCallBack(response);
    });

This should work.

answered Oct 14, 2016 at 15:26

Fehintola

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