Develop Reference

Reading in view return values ​from the controller AJAX / ASP.NET Update NEW

called by selectbox go into function 'getDepAndMan()',
there is a value taken from the selectbox (works)
calls functions in the controller 'GetDepartmentAndManager' (works)
controller returns value (works)
{Microsoft.EntityFrameworkCore.Query.Internal.EntityQueryable<<>f__AnonymousType6<'string, string>>}
Result View: [0] { UserDepartament = "there is value here / string", UserManager = "there is value here / string" }
should go back to ajax and call 'succes: function (employee data)' (works)
should assign values ​​to the fields (doesn't work)
show an alert (work)
show alert with values (doesn't work, show an alert with: undefined undefined)
View:
#(Html
.DevExtreme()
.SelectBox()
.DataSource(d => d
.Mvc()
)
.OnValueChanged("getDepAndMan")
)
#(Html.DevExtreme().TextBox()
.ID("Id_department")
.ReadOnly(true)
)
#(Html.DevExtreme().TextBox()
.ID("Id_manager")
.ReadOnly(true)
)
<script type="text/javascript">
function getDepAndMan() {
var userId = {
nazwaValueId: $("#idName").dxSelectBox("instance").option("value")
};
$.ajax({
url: "#Url.Action("GetDepartmentAndManager", "Uzytkownicy")",
type: "POST",
dataType: "json",
data: {"userId": JSON.stringify(userId)},
cache: false,
success: function (danePracownika) {
$("#Id_department")
.dxTextBox("instance")
.option("value", danePracownika.UserDepartament);
$("#Id_manager")
.dxTextBox("instance")
.option("value", danePracownika.UserManager);
alert(danePracownika.UserDepartament + " " + danePracownika.UserManager);
},
failure: function (error) {
alert(error);
},
error: function (error) {
alert(error);
}
});
}
</script>
Controller:
[HttpPost]
public ActionResult GetDepartmentAndManager(string userId)
{
dynamic serializer = JsonConvert.DeserializeObject<IDictionary>(userId);
var IdCzlowieka = serializer["nazwaValueId"];
int IntIdCzlowieka = Convert.ToInt32(IdCzlowieka);
var danePracownika = _uzytkownicyContext.Uzytkownicy.Where(x => x.Id == IntIdCzlowieka).Select(s => new
{
UserDepartament = s.Departament,
UserManager = s.ManagerLogin
});
return Json(danePracownika);
}
return : //
[0] { UserDepartament = "there is value here / string", UserManager = "there is value here / string" }
EDIT
The question is, what's wrong with the code, why it doesn't work for me?
.

I see that in Your GetDepartmentAndManager You are not using Your passed parameter userID:
var danePracownika = ... .Where(x => x.Id == IntIdCzlowieka)...
should be Where(x => x.Id == userId) instead.
The next thing that came to me is the value You are acctualy getting inside the controller action; based on the JS code I would say that this is not the ID of the employee what You are passing but the stringified object { "nazwaValueId": ... } that in the best case would be handled by the server and You will get the raw string as a value of userId (unless You have defined a IModelBinder class that would handle conversion from stringified { "nazwaValueId": ... } to the value of that field - more on that You can find here).
Oh any by the way - please try to avoid mixing languages. I have a friend in the company which was forced to work with the german project and all their code was written in German - You would DEFINETLY won't be happy working with it. But if this a project made only by PL for PL, that is some kind of acceptable approach I assume.
Also I highly advice You to not use HTTP POST method for getting data. To make long story short there is a convention that GET requests are for getting the data and You can call it as many times You like without affecting the state (było takie mądre słowo na to, ale nie pamiętam ;)) and POST is for saving/modifing data and should always redirect to GET method on return. You can read more about it here.
EDIT:
Ok, for some reason I have found that the call in the current form is sending data not as a body but as a form. I don't know, I don't use jQuery. But here is the reqest:
so I changed the signature of the action to
public ActionResult GetDepartmentAndManager([FromForm]string userId)
to get is started working. Maybe on Your side it is just working fine, I don't know. But what I have found is that while sending the responce to the client we end up with... this:
so as You can see either Ajax or server changed the JSON keys to be kebabCase not PascalCase and that's why You are getting undefined values. Because properties You arereading do not exists. Just check it out: alert(danePracownika.userDepartament + " " + danePracownika.userManager);
UPDATE:
I checked it, it was not server's fault:

Javascript function to replace data in Kendo Grid

I have a Kendo Grid on the start page of a .NET Core 2.0 MVC web app. The data source is populated via ViewData on page load:
public IActionResult Index()
{
var allForms = formsDB.FormHeader.Select(x => x);
ViewData["AllForms"] = allForms;
<...>
return View();
}
The data source object (FormHeader) contains a column with an employee code. One of the columns in my Kendo grid is currently displaying the employee code, but I'd like to display the full name via .ClientTemplate:
#(Html.Kendo().Grid<Forms.Models.FormHeader>()
.Name("HeadersMasterGrid")
.BindTo((IQueryable<Forms.Models.FormHeader>)ViewData["AllForms"])
.Pageable()
.Columns(columns =>
{
columns.Bound(p => p.EmployeeCode).Title("Employee")
/*.ClientTemplate("#=getEmployeeName(EmployeeCode)#")*/;
<..>
I'd like to display the employee's first and last name instead of the code. I set up an IAction result in my Form Controller to receive an employee code and return the full name (via ~/Form/GetEmployee/):
public ActionResult GetEmployee(string id)
{
var employee = theDB.EmployeeMasters.FirstOrDefault(x => x.EmployeeCode.Trim() == id.ToUpper());
BasicEmployee basicEmployee = new BasicEmployee(employee.FirstName, employee.LastName, id.Trim());
//return Json(basicEmployee);
return Json(basicEmployee.FullName);
}
Lastly, I added some jQuery script to my view that I was hoping would open the URL, retrieve the full name, and return that into the .ClientTemplate of the Kendo Grid column. You can see that I have tried returning just the full name, but also returning the entire object and then parsing/returning the full name from the object.
The second function in the block below was my most recent attempt after receiving some instruction about promises/callbacks (which are still pretty fuzzy).
#*function getEmployeeName(empCode) {
$.getJSON('#Url.Action("GetEmployee", "Form")' + "/" + empCode,
function(data) {
//var response = $.parseJSON(data);
//return response.FullName.toString();
return $.parseJSON(data);
}, 'json');
}*#
function getEmployeeName(empCode) {
var promise = $.getJSON('#Url.Action("GetEmployee", "Form")' + "/" + empCode);
$.when(promise).done(function(data) {
return JSON.stringify(data);
});
}
I've spent quite a bit of time with the Kendo docs, Google, and two Slack workspaces for developers, but I'm not finding anything that works. I have no experience with either Javascript or jQuery before this project and am still very much in the learning phase. I understand that I am most likely going about this incorrectly (or missing an easy solution), but I'd like to know how I can accomplish this.

How do I post Seach Textbox data alongside DataSourceRequest

I am trying to send my toolbar's 'search textbox' value through to a WEB API action. I have searched various online solutions. However, none seem to work.
On the client-side, I have a 'KeyUp' event on the 'search textbox'. Once completed, I need to append the value to the READ.
I HAVE TRIED THE FOLLOWING (CLIENT-SIDE):
// This Fails
var value = dictionary.elements.txtDeviceSearch.val();
var url = "api/devicedataitem/search?text='" + value + "'";
dictionary.instances.gridDevices.dataSource.options.transport.read.url = url;
dictionary.instances.gridDevices.dataSource.read();
// This Fails
dictionary.instances.gridDevices.dataSource.options.transport.read.data = { text: value };
dictionary.instances.gridDevices.dataSource.read();
// This Fails
dictionary.instances.gridDevices.dataSource.read({ text: 'Work Dammit' });
THE INITIAL CALL WORKS AS EXPECTED:
This is working as expected...
#(Html.Kendo().Grid<DeviceDataItem>()
.Name("gridDevices")
.DataSource(dataSource => dataSource
.WebApi()
.Model(model =>
{
model.Id(m => m.DeviceId);
model.Field(m => m.DeviceName);
model.Field(m => m.CommunicationTechnicianId);
model.Field(m => m.CommunicationTechnicianFullName);
model.Field(m => m.MeasurementTechnicianId);
model.Field(m => m.MeasurementTechnicianFullName);
})
.Read(read => read.Url("api/devicedataitem/search?text=''").Type(HttpVerbs.Post))
)
.ToolBar(toolbar =>
{
toolbar.Template(#<text>
<div class="input-group pull-right" role="toolbar">
<span class="input-group-addon">
<span class="glyphicon glyphicon-search" aria-hidden="true"></span>
</span>
<input type="text" class="form-control" id='txtDeviceSearch' placeholder="Search for..." />
</div>
</text>);
})
.Deferred(true))

Now we're getting somewhere, this question is better than the other one. What I was about to say back then, before giving up is that there is a parameter called parameterMap in the JavaScript widget where you can manipulate the data which will be sent in the request to API. As stated in the docs you could try:
parameterMap: function (data, type) {
return kendo.stringify($.extend({ "text": $("#txtDeviceText").text() }, data));
}
But I don't know how to add it to the razor helper because their docs sucks too much and I can't test it. So you can try:
Adding the parameter in the initialization(which I'm not sure if works):
DataSource(dataSource => dataSource.ParameterMap("jsFunctionNameHere")
Or something like that;
Setting it in your grid after initialization:
$("#grid").data("kendoGrid").dataSource.transport.parameterMap = function() {
return { text: $("#txtDeviceText").text() };
};
Demo
I bet on 2nd option, it should work.

Give this a try:
dictionary.instances.gridDevices.dataSource.type = "aspnetmvc-ajax";
We do the same thing within our application, sending parameters to the controller action in addition to the DataSourceRequest object. With that type setting removed, I get the same behaviour you do with the parameters received with null values.
The datasource is defined with js akin to this:
this.results = new kendo.data.DataSource({
type: "aspnetmvc-ajax",
transport: {
read: {
url: "Controller/Search",
data: function () {
return {
value: "abc"
};
}
}
}
});
When read() is triggered on it, it hits the controller action like this:
public JsonResult Search([DataSourceRequest] DataSourceRequest request, string value)
So nothing out of the ordinary there but with that type removed, the value is not received. Note that this is a System.Web.MVC.Controller, not a System.Web.Http.ApiController, although I can't see how that would make a difference. It may also be that the datasource type can only effectively be set at the time it is set up (so it would go in the definition, not altered after the fact as I originally suggested) but that's just another guess. I feel your pain - this sort of thing should just work.

Well, I finally figured this one out & it was difficult. This particular answer has many facets:
It uses a GET
As such, the GET requires use of the "Model Binder Attribute"
A minor POST example is now included below...
GET - WEB API:
This works because the "Model Binder Attribute" grabs the REQUEST object & hydrates it for you. Without it, the REQUEST will always be null.
// GET: /api/DeviceDataItem/Search
[HttpGet]
public DataSourceResult Search([ModelBinder(typeof(WebApiDataSourceRequestModelBinder))] DataSourceRequest request, string search)
{
var application = (MyApplication)Application;
var provider = (DeviceDataItemProvider)application.DeviceDataItemProvider;
IQueryable<DeviceDataItem> query = provider.Query();
// No 'Where' needed
if (string.IsNullOrWhiteSpace(search))
return query.ToDataSourceResult(request);
// Where
...your WHERE logic goes here...
return query.ToDataSourceResult(request);
}
GET - MVC.Read:
Notice I am referring to a custom Page Controller object that is publicly available through the window.
.Read(read => read.Url(Url.HttpRouteUrl("DefaultApi", new { controller = "DeviceDataItem", action="Search"}))
.Type(HttpVerbs.Get)
.Data("window.pageController.on.read.gridDevices"))
GET - JavaScript:
I happen to cache my objects in a Page Controller - you will have to reference your objects (however they are built).
this.on = {
read: {
gridDevices: function () {
return {
search: dictionary.elements.txtDeviceSearch.val()
}
}
},
search: {
gridDevices: function (e) {
lazyInitGridDevices();
// Clear
dictionary.instances.gridDevices.dataSource.data([]);
dictionary.instances.gridDevices.refresh();
// Read
dictionary.instances.gridDevices.dataSource.read();
}
}
};
POST:
According to Telerik, the same approach is used for passing parameters to POST requests. However, with Web API, the second parameter cannot be added to the method signature. One possible way to address this scenario is to use a JObject to get all the data from the request and then construct a new model object using this data.
For example:
public HttpResponseMessage Post(JObject jsonData)
{
ProductViewModel product = new ProductViewModel() {
ProductName = (string)jsonData["ProductName"],
UnitPrice = (decimal)jsonData["ProductID"],
UnitsInStock = (int)jsonData["ProductName"],
Discontinued = (bool)jsonData["ProductID"]
};
string searchTerm = (string)jsonData["search"];
.............
}

ajax reading/getting variable sometimes cannot get the exact variable with codeigniter

I am having a problem in my ajax or i don't know if it is a problem with ajax. I have an ajax code to get a value from label and concat it in my fresh data from database. Everytime i refresh the page, it outputs different. Sometimes it works fine, and sometimes it doesn't.
I am having my trouble in this part :
else {
value = value + "-"+init;
$('#checkID').text(value);
$("#checkID").css('visibility','visible');
}
sometimes it outputs 1-0 and sometimes the output became -0.
I am thinking of var value = $('#clinicID').html(); cannot concat with my -0 where the 1 of the output 1-0 is came from value variable
Here is my ajax full code :
function getcheckupID() {
var init = 0;
var value = $('#clinicID').html();
$.ajax ({
url: siteurl+"myclinic/getcheckID",
type: "GET",
dataType: "JSON",
success: function(data) {
if(data.length>0) {
$('#checkID').text(data[0]['check_up_id']);
$("#checkID").css('visibility','visible');
}
else {
value = value + "-"+init;
$('#checkID').text(value);
$("#checkID").css('visibility','visible');
}
}
})
}
my document ready code:
$(document).ready(function() {
get_clinicID();
show_patients();
checkupme();
});
where checkupme() function got a nested getcheckupID() runtime

I suggested another way to get data in #clinicID that you can use
When you refresh the page, insert your #clinicID like:
<span id="clinicID" data-value="1-0"><span> or whatever data you wanna input.
Then in getcheckupID function you'll call:
function getcheckupID() {
var init = 0;
var value = $('#clinicID').attr("data-value");
// Your code ajax
}
If it still have problem, please check your echo when page generated. Maybe there're not any value to print.
Hope this help.

AngularJS and Restangular, trying to convert update method to API

I'm trying to convert my basic crud operations into an API that multiple components of my application can use.
I have successfully converted all methods, except the update one because it calls for each property on the object to be declared before the put request can be executed.
controller
$scope.update = function(testimonial, id) {
var data = {
name: testimonial.name,
message: testimonial.message
};
dataService.update(uri, data, $scope.id).then(function(response) {
console.log('Successfully updated!');
},
function(error) {
console.log('Error updating.');
});
}
dataService
dataService.update = function(uri, data, id) {
var rest = Restangular.one(uri, id);
angular.forEach(data, function(value, key) {
// needs to be in the format below
// rest.key = data.key
});
// needs to output something like this, depending on what the data is passed
// rest.name = data.name;
// rest.message = data.message;
return rest.put();
}
I tried to describe the problem in the codes comments, but to reiterate I cannot figure out how to generate something like rest.name = data.name; without specifying the name property because the update function shouldn't need to know the object properties.
Here is what the update method looked like before I started trying to make it usable by any of my components (this works)
Testimonial.update = function(testimonial, id) {
var rest = Restangular.one('testimonials', id);
rest.name = testimonial.name;
rest.message = testimonial.message;
return rest.put();
}
How can I recreate this without any specific properties parameters hard-coded in?
Also, my project has included lo-dash, if that helps, I don't know where to start with this problem. Thanks a ton for any advice!

Try like
angular.extend(rest,testimonial)
https://docs.angularjs.org/api/ng/function/angular.extend