I want to call a function with 2 int parameters from an MVC Controller class in it's appropriate Razor view, when selecting something from a dropdown. Basically the dropdown selects the Id of a color(colorId), and the Razor view alreadt knows the Id of a car(carId). These are the variables I need as a parameter.
public void GetCarImageBasedOnColor(int carId, int colorId)
{
CarImage image = (from c in _context.CarImage
where c.CarId == carId && c.ColorId == colorId
select new CarImage
{
Image = c.Image
}).FirstOrDefault();
configCar.CurrentCarColorImage = image.Image;
}
This is the method from the Controller class, where confogCar is declared globally, and it is the Model on which the Controller and the View are based on. What I am looking for is calling this method so that the property CurrentCarColorImage can be changed based on the 2 Id's.
This is the Razor view code.
@if (Model.car.Image != null)
{
<div class="mt-4">
<center><img src="@("~/Images/"[email protected])" id="carImage" asp-append-version="true" style="padding-top:50px; padding-bottom:40px; width:65%; height:65%" /></center>
</div>
}
<div class="row">
<div class="col-md-4">
<label asp-for="@Model.CarImg.ColorId" class="control-label">Color</label>
<select id="colorDropdown" onchange="GetCarImageBasedOnColor(@Model.car.Id, @Model.CarImg.ColorId)" asp-for="@Model.CarImg.ColorId" class="form-control" asp-items="@Model.Colors">
<option value="">Please select a color</option>
</select>
</div>
</div>
You can try to use ajax to get new CurrentCarColorImage from action,here is a demo:
view:
@if (Model.car.Image != null)
{
<div class="mt-4">
<center><img src="@("~/Images/"[email protected])" id="carImage" asp-append-version="true" style="padding-top:50px; padding-bottom:40px; width:65%; height:65%" /></center>
</div>
}
<div class="row">
<div class="col-md-4">
<label asp-for="@Model.CarImg.ColorId" class="control-label">Color</label>
<select id="colorDropdown" onchange="GetCarImageBasedOnColor()" asp-for="@Model.CarImg.ColorId" class="form-control" asp-items="@Model.Colors">
<option value="">Please select a color</option>
</select>
</div>
</div>
js:
@section Scripts{
<script>
function GetCarImageBasedOnColor() {
$.ajax({
type: "GET",
url: "GetCarImageBasedOnColor",
data: { carId: @Model.car.Id, colorId: $("#colorDropdown").val() },
success: function (data) {
var newSrc = $("#carImage").attr("src").split("Images")[0] + "Images/" + data;
$("#carImage").attr("src", newSrc);
}
});
}
</script>
}
action:
public JsonResult GetCarImageBasedOnColor(int carId, int colorId)
{
CarImage image = (from c in _context.CarImage
where c.CarId == carId && c.ColorId == colorId
select new CarImage
{
Image = c.Image
}).FirstOrDefault();
return new JsonResult(image.Image);
}