CODEWITHSUNDEEP
asp.net-mvcmacosviewcontrollervisual-studio-code
Hatsumi
Hatsumi

Reputation: 2228

How to pass model values from a view to a controller?

I'm using VSCode in Mac creating a MVC.

The parameter "new { problem = @Model }" shouldn't pass the values from the view to the controller?

View code:

@model ProblemsV4.Models.ProblemModel

<h2>New Solution</h2>

@using(Html.BeginForm("SaveSolution", "Problem", new { problem = @Model }, FormMethod.Get))
{
    <label>Solution: </label>
    <input type="text" name="solution" /><br/><br/>
    <input type="submit" value="Save"/>
}

Controller code:

public IActionResult SaveSolution(ProblemModel problemModel, string solution)
        {
            SolutionModel model = new SolutionModel();

            model.Solution = solution;

            ProblemBC bc = new ProblemBC();

            bc.AddSolution(model);

            List<ProblemModel> models = bc.ListAll();
            ViewBag.Message = "Solução inserida com sucesso";

            return View("Index", models);
        }

Upvotes: 2

Views: 2240

Answers (1)

Felipe Augusto
Felipe Augusto

Reputation: 8184

You should receive a HttpPost at the controller and send the parameters of the model with a HiddenFor, a type of HtmlHelper that doesn't shows any input.

The BeginForm method has many signatures, one of them contains the Object routeValues, that is an object that contains the parameters for a route. You don't need to use that, you can use other signature like this: https://msdn.microsoft.com/en-us/library/dd460344(v=vs.118).aspx

First step:

[HttpPost] 
public IActionResult SaveSolution(ProblemModel problemModel, string solution) 
{ 
    SolutionModel model = new SolutionModel(); 

    model.Solution = solution; 

    ProblemBC bc = new ProblemBC(); 

    bc.AddSolution(model); 

    List<ProblemModel> models = bc.ListAll(); 

    ViewBag.Message = "Solução inserida com sucesso"; 

    return View("Index", models); 
}

Second step:

@model ProblemsV4.Models.ProblemModel 

<h2>New Solution</h2> 

@using(Html.BeginForm("SaveSolution", "Problem", FormMethod.Post)) 
{ 

    <label>Solution: </label> 

    <input type="text" name="solution" /><br/><br/> 

    @Html.HiddenFor(model => model.Problem) 
    @Html.HiddenFor(model => model.Description) 
    @Html.HiddenFor(model => model.ID) 

    <input type="submit" value="Save"/> 

}

Upvotes: 2

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