I can't figure out how to bind back generic value from view when sending it back to controller via post method.
I have generic class PageModel that inherites from GenericModel. PageModel has additional parameter Page (class that have two int parameters, pageSize and pageNumber). GenericModel has only generic value of T named viewModel and nothing more. The problem is that standard C# binder binds Page parameter without any issues, but no matter what I'm trying to do ViewModel is never filled in.
Models:
public class GenericModel<T>
{
public T ViewModel { get; set; }
public GenericModel(T viewModel)
{
ViewModel = viewModel;
}
public GenericModel()
{
}
}
public class PageModel<T> : GenericModel<T>
{
public Page Page { get; set; }
public PageModel(T viewModel, Page page) : base(viewModel)
{
Page = page;
}
public PageModel() : base()
{
}
}
Generic Parameter:
public class UserModel
{
public string Id { get; set; }
public string Email { get; set; }
public string Password { get; set; }
public string ConfirmPassword { get; set; }
public IList<string> Roles { get; set; }
public IList<string> NewRoles { get; set; }
}
Controller method
[HttpPost]
public async Task<IActionResult> Update(PageModel<UserModel> model)
{
var isUpdated = await _userServices.Update(model.ViewModel);
ViewData["IsUpdated"] = isUpdated;
return View("Index", await _userServices.GetUsersPage(model.Page.PageNumber, model.Page.PageSize));
}
View:
#model PageModel<UserModel>
#{
ViewData["Title"] = "Update";
}
<h1>Update</h1>
<form asp-controller="Admin" asp-action="Update" method="post">
<div asp-validation-summary="All" class="text-danger"></div>
<div class="form-group">
<label asp-for="ViewModel.Id"></label>
<input type="text" asp-for="ViewModel.Id" disabled="disabled" class="form-control" />
<span asp-validation-for="ViewModel.Id" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="ViewModel.Password"></label>
<input type="password" asp-for="ViewModel.Password" class="form-control" />
<span asp-validation-for="ViewModel.Password" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="ViewModel.ConfirmPassword"></label>
<input type="password" asp-for="ViewModel.ConfirmPassword" class="form-control" />
<span asp-validation-for="ViewModel.ConfirmPassword" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="ViewModel.Roles"></label>
<input type="text" asp-for="ViewModel.Roles" class="form-control" hidden="hidden" />
<span asp-validation-for="ViewModel.Roles" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="Page.PageNumber"></label>
<input type="number" asp-for="Page.PageNumber" class="form-control" hidden="hidden" />
<span asp-validation-for="Page.PageNumber" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="Page.PageSize"></label>
<input type="number" asp-for="Page.PageSize" class="form-control" hidden="hidden" />
<span asp-validation-for="Page.PageSize" class="text-danger"></span>
</div>
#foreach (var availableRole in (IList<IdentityRole>)ViewData["AllRoles"])
{
<div class="form-check">
<input class="form-check-input" type="checkbox" name="newRoles" value="#availableRole.Name"
checked="#Model.ViewModel.Roles.Contains(availableRole.Name)">
<label class="form-check-label">#availableRole</label>
</div>
}
<button type="submit" class="btn btn-success">Change</button>
Do you know what can be the issue? Is naming convention wrong? I've already tried to find answer on stack, but with no luck.
**
EDIT 1:
**
This is what is generated by ASP.NET (Copied from google chrome)
<form method="post" action="/Admin/Update/439c61f5-d721-4e10-b49c-6263b7929c6a">
<div class="text-danger validation-summary-valid" data-valmsg-summary="true"><ul><li style="display:none"></li>
</ul></div>
<div class="form-group">
<label asp-for="ViewModel.Id"></label>
<input type="text" asp-for="ViewModel.Id" disabled="disabled" class="form-control" />
</div>
<div class="form-group">
<label for="ViewModel_Password">Password</label>
<input type="password" class="form-control" data-val="true" data-val-length="The Password must be at least 6 and at max 100 characters long." data-val-length-max="100" data-val-length-min="6" id="ViewModel_Password" name="ViewModel.Password">
<span class="text-danger field-validation-valid" data-valmsg-for="ViewModel.Password" data-valmsg-replace="true"></span>
</div>
<div class="form-group">
<label for="ViewModel_ConfirmPassword">Confirm password</label>
<input type="password" class="form-control" data-val="true" data-val-equalto="The password and confirmation password do not match." data-val-equalto-other="*.Password" id="ViewModel_ConfirmPassword" name="ViewModel.ConfirmPassword">
<span class="text-danger field-validation-valid" data-valmsg-for="ViewModel.ConfirmPassword" data-valmsg-replace="true"></span>
</div>
<div class="form-group">
<label for="ViewModel_Roles">Roles</label>
<input type="text" class="form-control" hidden="hidden" id="ViewModel_Roles" name="ViewModel.Roles" value="System.Collections.Generic.List`1[System.String]">
<span class="text-danger field-validation-valid" data-valmsg-for="ViewModel.Roles" data-valmsg-replace="true"></span>
</div>
<div class="form-group">
<label for="Page_PageNumber">PageNumber</label>
<input type="number" class="form-control" hidden="hidden" data-val="true" data-val-required="The PageNumber field is required." id="Page_PageNumber" name="Page.PageNumber" value="1">
<span class="text-danger field-validation-valid" data-valmsg-for="Page.PageNumber" data-valmsg-replace="true"></span>
</div>
<div class="form-group">
<label for="Page_PageSize">PageSize</label>
<input type="number" class="form-control" hidden="hidden" data-val="true" data-val-required="The PageSize field is required." id="Page_PageSize" name="Page.PageSize" value="5">
<span class="text-danger field-validation-valid" data-valmsg-for="Page.PageSize" data-valmsg-replace="true"></span>
</div>
<div class="form-check">
<input class="form-check-input" type="checkbox" name="newRoles" value="Administrator">
<label class="form-check-label">Administrator</label>
</div>
<div class="form-check">
<input class="form-check-input" type="checkbox" name="newRoles" value="User" checked="checked">
<label class="form-check-label">User</label>
</div>
<button type="submit" class="btn btn-success">Change</button>
<input name="__RequestVerificationToken" type="hidden" value="CfDJ8Hsh_QOxexZLjyWnCjnNzz2ZhIuA-aPvi2MKBsCF12vrc6FY2yJnWGo1Nq9xNtwuiq7dTKdt93hUTJUf0PDD8RX1CJGgo0Jc3eDJMf8Ymh13fz0K60_S-uajXL3lNZalJJ58idjvok61tqa6oddepoWN1A0BUYHsk-h-PdfUCswqBSrt9GsHdbRvS5NrIitiZQ"></form>
Form data from google dev tools:
ViewModel.Password:
ViewModel.ConfirmPassword:
ViewModel.Roles: System.Collections.Generic.List%601%5BSystem.String%5D
Page.PageNumber: 1
Page.PageSize: 5
newRoles: User
__RequestVerificationToken: CfDJ8Hsh_QOxexZLjyWnCjnNzz2AyLo8vWEn4NIFS4brVjbJsYdFKgY97yj5IO8trooYDKkrdxPlFrGk2hmPQrmoEKgmGSno2jdOwGud-5Fcy8ewmp7K2pl1XODyKXxYSaZ3TngHSl1KLpMb9REpq4_Nqh45sdO1eBaMqpw3dfgCoAbvc6m2nEKJlDaRm_2eaKTX-w
Decoded form (the same as above):
ViewModel.Password=&ViewModel.ConfirmPassword=&ViewModel.Roles=System.Collections.Generic.List%601%5BSystem.String%5D&Page.PageNumber=1&Page.PageSize=5&newRoles=User&__RequestVerificationToken=CfDJ8Hsh_QOxexZLjyWnCjnNzz2AyLo8vWEn4NIFS4brVjbJsYdFKgY97yj5IO8trooYDKkrdxPlFrGk2hmPQrmoEKgmGSno2jdOwGud-5Fcy8ewmp7K2pl1XODyKXxYSaZ3TngHSl1KLpMb9REpq4_Nqh45sdO1eBaMqpw3dfgCoAbvc6m2nEKJlDaRm_2eaKTX-w
EDIT 2
I've changed the disable tag from id to readonly, and now ID is being sent. I don't thing I've changed anything else but I think thanks to that every single other property is added, but IList with roles. There still is a problem. Roles don't bind at all.
ViewModel.Id: fde0b182-3b24-4d5b-b31e-3680b7cfd4de
ViewModel.Password: 19923845379
ViewModel.ConfirmPassword: 1284326898838
ViewModel.Roles: System.Collections.Generic.List`1[System.String]
Page.PageNumber: 1
Page.PageSize: 5
newRoles: Administrator
newRoles: User
__RequestVerificationToken: CfDJ8Hsh_QOxexZLjyWnCjnNzz1Hy5YNNny4vPyGFd434Uybuo-O-dMFHT7eSKvd7JKA_dqxlQDIFlNzVsSjTDT6lzl7d2AU6Pj1nVRUyux3OZ2cGbyyBVKZHUI0Kq4u_MAx_b_29SUVSYh5Tpayc-0WPdcjGfxKLvL1qrbn6qeHcNk356VsPG1AC5cphft3frjILA
EDIT 3 [Solved]
Thanks to #itminus help I could solve the issue. Below you have changed form with two versions of the same - Roles with
<form asp-controller="Admin" asp-action="Update" method="post">
<div asp-validation-summary="All" class="text-danger"></div>
<div class="form-group">
<label asp-for="ViewModel.Id"></label>
<input type="text" asp-for="ViewModel.Id" readonly class="form-control" />
<span asp-validation-for="ViewModel.Id" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="ViewModel.Password"></label>
<input type="password" asp-for="ViewModel.Password" class="form-control" />
<span asp-validation-for="ViewModel.Password" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="ViewModel.ConfirmPassword"></label>
<input type="password" asp-for="ViewModel.ConfirmPassword" class="form-control" />
<span asp-validation-for="ViewModel.ConfirmPassword" class="text-danger"></span>
</div>
#for(int i = 0; i < Model.ViewModel.Roles.Count(); i++) {
<div class="form-group">
<label asp-for="ViewModel.Roles[i]"></label>
<input type="text" asp-for="ViewModel.Roles[i]" class="form-control" hidden="hidden" />
<span asp-validation-for="ViewModel.Roles[i]" class="text-danger"></span>
</div>
}
<div class="form-group">
<input type="number" asp-for="Page.PageNumber" class="form-control" hidden="hidden" />
<span asp-validation-for="Page.PageNumber" class="text-danger"></span>
</div>
<div class="form-group">
<input type="number" asp-for="Page.PageSize" class="form-control" hidden="hidden" />
<span asp-validation-for="Page.PageSize" class="text-danger"></span>
</div>
#foreach (var availableRole in (IList<IdentityRole>)ViewData["AllRoles"])
{
<div class="form-check">
<input class="form-check-input" type="checkbox" name="ViewModel.NewRoles[]" value="#availableRole.Name"
checked="#Model.ViewModel.Roles.Contains(availableRole.Name)">
<label class="form-check-label">#availableRole</label>
</div>
}
<button type="submit" class="btn btn-success">Change</button>
</form>
What is being sent from form now. (Example values)
ViewModel.Id: bf872461-f429-497f-8159-898e1dfafad9
ViewModel.Password: 1394657234609243070
ViewModel.ConfirmPassword: 2346-7345-67356667
ViewModel.Roles[0]: User
Page.PageNumber: 1
Page.PageSize: 5
ViewModel.NewRoles[]: Administrator
ViewModel.NewRoles[]: User
__RequestVerificationToken: CfDJ8Hsh_QOxexZLjyWnCjnNzz1AvzPUt8DrSfqpOni-Q65jAFnRqNs875teRTned_OQ6S7GV19WwWRqE7yRgTNmeeX9Twg4RjgQR_JEibtFYpHN6zbDJgLeauyyHxwOukRSTl0GZIRii5VaQBUxIbK6A8qHxgl4bn5-01YLj8bOXV9Ze7TvdP3MTX7ghYcAprPUJQ
Is naming convention wrong?
Yes. The name convention is :
Dot (.) represents property
[] represents collection index or dictionary
However, in your previous code, NewRoles fields have the name of newRoles:
<input ... name="newRoles" ...>
which is not correct. The same goes for the Roles property.
So you need change you code in following way:
Roles:
<label asp-for="ViewModel.Roles"></label>
<input type="text" asp-for="ViewModel.Roles" class="form-control" hidden="hidden" />
<span asp-validation-for="ViewModel.Roles" class="text-danger"></span>
#for(var i=0; i < Model.ViewModel.Roles.Count(); i++)
{
<input type="hidden" name="ViewModel.Roles[]" value="#Model.ViewModel.Roles[i]" />
}
NewRoles:
#foreach (var availableRole in (IList<IdentityRole>)ViewData["AllRoles"])
{
<div class="form-check">
<input class="form-check-input" type="checkbox"
name="ViewModel.NewRoles[]"
value="#availableRole.Name"
checked="#Model.ViewModel.Roles.Contains(availableRole.Name)">
<label class="form-check-label">#availableRole</label>
</div>
}
Related
When I pass model to the view on the post method the ProductId and UserId get nulled.
[HttpGet]
public async Task<IActionResult> AddReview(int id)
{
var userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
var model = new AddReviewViewModel()
{
ProductId = id,
UserId = userId
};
return View(model);
}
[HttpPost]
public async Task<IActionResult> AddReview(AddReviewViewModel addReviewViewModel)
{
if (!ModelState.IsValid)
{
return View(addReviewViewModel);
}
//...
}
Here is how I call the post method.
<div class="row">
<div class="col-sm-12 offset-lg-2 col-lg-8 offset-xl-3 col-xl-6">
<form asp-action="AddReview" method="post">
<div class="mb-3">
<label asp-for="#Model.Comment" class="form-label">Comment</label>
<input asp-for="#Model.Comment" class="form-control" aria-required="true" />
<span asp-validation-for="Comment" class="text-danger"></span>
</div>
<div class="mb-3">
<label asp-for="#Model.Rating" class="form-label">Rating</label>
<input asp-for="#Model.Rating" class="form-control" aria-required="true" />
<span asp-validation-for="Rating" class="text-danger"></span>
</div>
<div class="mb-3">
<input class="btn btn-primary" type="submit" value="Submit Review" />
</div>
</form>
</div>
</div>
I have done something like this while adding a new product but I haven't had any problem.
You have to return the data. It needs to make a round-trip. This is typically done with hidden input fields.
<input type="hidden" id="ProductId" name="ProductId" value="#Model.ProductId">
<input type="hidden" id="UserId" name="UserId" value="#Model.UserId">
Full example
<form asp-action="AddReview" method="post">
<input type="hidden" id="ProductId" name="ProductId" value="#Model.ProductId">
<input type="hidden" id="UserId" name="UserId" value="#Model.UserId">
<div class="mb-3">
<label asp-for="#Model.Comment" class="form-label">Comment</label>
<input asp-for="#Model.Comment" class="form-control" aria-required="true" />
<span asp-validation-for="Comment" class="text-danger"></span>
</div>
<div class="mb-3">
<label asp-for="#Model.Rating" class="form-label">Comment</label>
<input asp-for="#Model.Rating" class="form-control" aria-required="true" />
<span asp-validation-for="Rating" class="text-danger"></span>
</div>
<div class="mb-3">
<input class="btn btn-primary" type="submit" value="Submit Review" />
</div>
</form>
If your version supports taghelpers you can also write:
<input type="hidden" asp-for="ProductId">
<input type="hidden" asp-for="UserId">
Or using the HtmlHelper:
#Html.HiddenFor(m => m.ProductId)
#Html.HiddenFor(m => m.UserId)
In all cases, make sure you add this inside the form.
hello community I have a problem how can I get the value of a radio button in blazor, I have three radio buttons in the first two I want to put a value number 0 and 16 to save them in the database and in the third button a bool value to show some input if that value was selected,but the truth is I don't know how to do this since I understand that in blazor you can't even put the bidirectional values with bind-value
this is my code:
<div class="form-group col-md-2">
<label>Impuestos</label>
<div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio1" #bind-value="#ImpuestoDetalle.Tasa">
<label class="form-check-label" for="inlineRadio1">0%</label>
</div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio2" #bind-value="#ImpuestoDetalle.Tasa">
<label class="form-check-label" for="inlineRadio2">16%</label>
</div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio3" #bind="#Perzonalizado">
<label class="form-check-label" for="inlineRadio3">Perzonalizado</label>
</div>
</div>
</div>
#if (Perzonalizado)
{
<div class="form-group col-md-2">
<label>Tasa</label>
<div>
<input type="number" class="form-control" #bind-value="#ImpuestoDetalle.Tasa" />
</div>
</div>
}
#code {
private Impuesto Impuesto = new Impuesto();
private ImpuestoDetalle ImpuestoDetalle = new ImpuestoDetalle();
private Boolean Perzonalizado = false;
}
Tried this really quickly and achieved in a slightly different way using onchange event:
<div class="form-group col-md-2">
<label>Impuestos</label>
<div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio1" #onchange="#(() => UpdatePercentage(0))">
<label class="form-check-label" for="inlineRadio1">0%</label>
</div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio2" #onchange="#(() => UpdatePercentage(16))">
<label class="form-check-label" for="inlineRadio2">16%</label>
</div>
<div class="form-check form-check-inline">
<input class="form-check-input" type="radio" name="inlineRadioOptions" id="inlineRadio3" #onchange="#(() => Perzonalized())">
<label class="form-check-label" for="inlineRadio3">Perzonalizado</label>
</div>
</div>
</div>
#if (Perzonalizado)
{
<div class="form-group col-md-2">
<label>Tasa</label>
<div>
<input type="number" class="form-control" #bind-value="#ImpuestoDetalleM.Tasa" />
</div>
</div>
}
#code {
public ImpuestoDetalle ImpuestoDetalleM = new ImpuestoDetalle();
private Boolean Perzonalizado = false;
public class ImpuestoDetalle
{
public int Tasa { get; set; }
}
public void Perzonalized()
{
Perzonalizado = true;
}
public void UpdatePercentage(int percentage)
{
Perzonalizado = false;
ImpuestoDetalleM.Tasa = percentage;
}
}
So basically when the radio button is clicked, we fill the value by passing from parameter.
You can also try the snippet here: https://blazorrepl.com/repl/ckOBGDvj26S1LtXe41
I wanted to know how to modify or delete (Edit async or delete) 1 or 2 models belonging to the same view
Like this example we have
public class FruitsViewModel
{
public List<Abricot> Abricots { get; set; }
public List<Banane> Bananes { get; set; }
public List<Citron> Citrons { get; set; }
}
#model namespace de FruitsViewModel
#foreach(var abricot in Model.Abricots)
{
// Affiche les propriétés d'un abricot
}
#foreach(var banane in Model.Bananes)
{
// Affiche les propriétés d'une banane
}
#foreach(var citron in Model.Citrons)
{
// Affiche les propriétés d'un citron
}
public ActionResult ActionController()
{
var vm = new FruitsViewModel();
vm.Abricots = // Récupère les abricots depuis la base de données
vm.Bananes = // Récupère les bananes depuis la base de données
vm.Citrons = // Récupère les citrons depuis la base de données
return View(vm);
}
i do like your code,there is no exception,
if I click on the save button normally the banae model will be changed and I will write to index which displays this update
`enter code here` `#foreach (var banane in Model.personnels)
{
<form asp-action="EditBanane" method="post">
<div asp-validation-summary="ModelOnly" class="text-danger"></div>
<div class="form-group">
<label asp-for="#banane.Id" class="control-label"></label>
<input asp-for="#banane.Id" class="form-control" />
<span asp-validation-for="#banane.Id" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="#banane.Name" class="control-label"></label>
<input asp-for="#banane.Name" class="form-control" />
<span asp-validation-for="#banane.Name" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="#banane.Color" class="control-label"></label>
<input asp-for="#banane.Color" class="form-control" />
<span asp-validation-for="#banane.Color" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="#banane.BananeP" class="control-label"></label>
<input asp-for="#banane.BananeP" class="form-control" />
<span asp-validation-for="#banane.BananeP" class="text-danger"></span>
</div>
<div class="form-group">
<input type="submit" value="Save" class="btn btn-primary" />
</div>
</form>
----action Edit
public ActionResult EditBanane(int id, [Bind("id,Name,Color,BananeP")] Banane banane)
{
_context.Update(banane);
_context.SaveChangesAsync();
return RedirectToAction("Index");
how I can do an Edit in method public async Task Edit(int id, [Bind("id,..,")] ....)on the banana or lemon model
If you'd like to edit/update model item of banana or lemon etc, you can try these approaches.
Approach 1: put input fields of model item in a form and specify the action method for form submission, like below.
#foreach (var fruit in Model.Abricots)
{
// Affiche les propriétés d'un abricot
//...
}
#foreach (var banane in Model.Bananes)
{
// Affiche les propriétés d'une banane
<form asp-action="EditBanane" method="post">
<div asp-validation-summary="ModelOnly" class="text-danger"></div>
<div class="form-group">
<label asp-for="#banane.Id" class="control-label"></label>
<input asp-for="#banane.Id" class="form-control" />
<span asp-validation-for="#banane.Id" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="#banane.Name" class="control-label"></label>
<input asp-for="#banane.Name" class="form-control" />
<span asp-validation-for="#banane.Name" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="#banane.Color" class="control-label"></label>
<input asp-for="#banane.Color" class="form-control" />
<span asp-validation-for="#banane.Color" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="#banane.BananeP" class="control-label"></label>
<input asp-for="#banane.BananeP" class="form-control" />
<span asp-validation-for="#banane.BananeP" class="text-danger"></span>
</div>
<div class="form-group">
<input type="submit" value="Save" class="btn btn-primary" />
</div>
</form>
}
#foreach (var fruit in Model.Citrons)
{
// Affiche les propriétés d'un citron
//...
}
Action method
[HttpPost]
public IActionResult EditBanane(Banane banane)
{
//...
Approach 2: generate expected data and make request using Fetch API or Ajax etc to post data to corresponding action method with JavaScript code.
I do like your code,and thers is no exception and no update of the model in the page Index (principal page)
#foreach (var banane in Model.Bananes)
{
<form asp-action="EditBanane" method="post">
<div asp-validation-summary="ModelOnly" class="text-danger"></div>
<div class="form-group">
<label asp-for="#banane.Id" class="control-label"></label>
<input asp-for="#banane.Id" class="form-control" />
<span asp-validation-for="#banane.Id" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="#banane.Name" class="control-label"></label>
<input asp-for="#banane.Name" class="form-control" />
<span asp-validation-for="#banane.Name" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="#banane.Color" class="control-label"></label>
<input asp-for="#banane.Color" class="form-control" />
<span asp-validation-for="#banane.Color" class="text-danger"></span>
</div>
<div class="form-group">
<label asp-for="#banane.BananeP" class="control-label"></label>
<input asp-for="#banane.BananeP" class="form-control" />
<span asp-validation-for="#banane.BananeP" class="text-danger"></span>
</div>
<div class="form-group">
<input type="submit" value="Save" class="btn btn-primary" />
</div>
</form>
----action Edit
public ActionResult EditBanane(int id, [Bind("id,Name,Color,BananeP")] Banane banane)
{
_context.Update(banane);
_context.SaveChangesAsync();
return RedirectToAction("Index");
and thanks a lot for your response,
I do like that but unfortunately it does not work yet the update has not done
#foreach (var item in Model.bananes)
{
<div class="col-md-4">
<form asp-action="ViewEdit" method="post">
<div asp-validation-summary="ModelOnly" class="text-danger"></div>
<input type="hidden" value=#Html.DisplayFor(modelItem => item.id)>
<div class="form-group">
<label asp-for="#item.Name" class="control-label"></label>
<input class="form-control" value="#Html.DisplayFor(modelItem => item.Name)">
</div>
<div class="form-group">
<label asp-for="#item.Color" class="control-label"></label>
<input class="form-control" value="#Html.DisplayFor(modelItem => item.Color)">
</div>
<div class="form-group">
<label asp-for="#item.BananeP" class="control-label"></label>
<input class="form-control" value="#Html.DisplayFor(modelItem => item.BananeP)">
</div>
<div class="form-group">
<input type="submit" value="save" class="btn btn-info text-white " />
</div>
</form>
</div>}
public IActionResult ViewEdit( [Bind("id,Name,Color,BananeP ")] Banane item)
{
_context.Update(item);
_context.SaveChangesAsync();
return RedirectToAction("Index");}
I'm attempting to build a form with a few textbox inputs and a file input for someone to upload images.
When a file is picked, I have some JS go get a partial view and render it in the form. After the new partial is rendered, I clone and copy the file input element and place it as a hidden input in the new partial to be used later in the form. There's some other fields in the partial that relate to the image that was selected.
Once that's all done, the file input element is reset, and the user can select another image, generating a new partial view, etc.
The form looks like it's being rendered correctly, but when I try to submit, VS memory/cpu usage spikes, and the request never makes it to the controller. Any advice or help here is appreciated!
Screenshot of the form
ViewModel:
public class ProjectCreate
{
public int Id { get; set; }
public string Title { get; set; }
public string Description { get; set; }
public DateTime ProjectDate { get; set; }
public List<Image> GalleryImages { get; set; }
}
Image ViewModel:
public class Image
{
public int Id { get; set; }
public int GalleryIndex { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public IFormFile ImageFile { get; set; }
}
Form:
<form asp-action="Create" enctype="multipart/form-data">
<div asp-validation-summary="ModelOnly" class="text-danger"></div>
<div class="form-group col-sm-4">
<label asp-for="Title" class="control-label"></label>
<input asp-for="Title" class="form-control" />
<span asp-validation-for="Title" class="text-danger"></span>
</div>
<div class="form-group col-sm-4">
<label asp-for="Description" class="control-label"></label>
<input asp-for="Description" class="form-control" />
<span asp-validation-for="Description" class="text-danger"></span>
</div>
<div class="form-group col-sm-4">
<label asp-for="ProjectDate" class="control-label"></label>
<input asp-for="ProjectDate" class="form-control" />
<span asp-validation-for="ProjectDate" class="text-danger"></span>
</div>
<div class="form-group col-sm-4">
<label class="control-label">Project Images</label>
<input id="ImageUpload" type="file" class="form-control" accept="image/jpeg, image/png, image/gif" />
</div>
#* Display images here *#
<div id="pending-images" class="row"></div>
<div class="form-group">
<input type="submit" value="Create" class="btn btn-primary" />
</div>
</form>
The 'pending-images' div is where the partialview is rendered to.
PartialView:
<div class="card mb-3" style="width: 18rem">
<img class="card-img-top" id="pending-image-#Model.Id" src="" style="max-height: 18rem; max-width: 18rem;" />
<div class="card-body">
<div class="form-group">
<label class="control-label">Index</label>
<input id="GalleryImages[#Model.Id].GalleryIndex" name="GalleryImages[#Model.Id].GalleryIndex" class="form-control" value="#Model.Id" />
</div>
<div class="form-group">
<label class="control-label">Name/Title</label>
<input id="GalleryImages[#Model.Id].Name" name="GalleryImages[#Model.Id].Name" class="form-control" />
</div>
<div class="form-group">
<label class="control-label">Description</label>
<input id="GalleryImages[#Model.Id].Description" name="GalleryImages[#Model.Id].Description" class="form-control" />
</div>
<input type="file" id="GalleryImages[#Model.Id].ImageFile" name="GalleryImages[#Model.Id].ImageFile" style="display: none;" />
</div>
</div>
Rendered HTML:
<form enctype="multipart/form-data" action="/Projects/Create" method="post" novalidate="novalidate">
<div class="form-group col-sm-4">
<label class="control-label" for="Title">Title</label>
<input class="form-control valid" type="text" id="Title" name="Title" value="" aria-invalid="false">
<span class="text-danger field-validation-valid" data-valmsg-for="Title" data-valmsg-replace="true"></span>
</div>
<div class="form-group col-sm-4">
<label class="control-label" for="Description">Description</label>
<input class="form-control valid" type="text" id="Description" name="Description" value="" aria-invalid="false">
<span class="text-danger field-validation-valid" data-valmsg-for="Description"
data-valmsg-replace="true"></span>
</div>
<div class="form-group col-sm-4">
<label class="control-label" for="ProjectDate">Project Date</label>
<input class="form-control valid" type="date" data-val="true"
data-val-required="The Project Date field is required." id="ProjectDate" name="ProjectDate" value=""
aria-describedby="ProjectDate-error" aria-invalid="false">
<span class="text-danger field-validation-valid" data-valmsg-for="ProjectDate"
data-valmsg-replace="true"></span>
</div>
<div class="form-group col-sm-4">
<label class="control-label">Project Images</label>
<input id="ImageUpload" type="file" class="form-control" accept="image/jpeg, image/png, image/gif">
</div>
<div id="pending-images" class="row">
<div class="col-sm-4">
<div class="card mb-3" style="width: 18rem">
<img class="card-img-top" id="pending-image-0" src="data:image/jpeg;base64,xxx"
style="max-height: 18rem; max-width: 18rem;">
<div class="card-body">
<div class="form-group">
<label class="control-label">Index</label>
<input id="GalleryImages[0].GalleryIndex" name="GalleryImages[0].GalleryIndex"
class="form-control" value="0">
</div>
<div class="form-group">
<label class="control-label">Name/Title</label>
<input id="GalleryImages[0].Name" name="GalleryImages[0].Name" class="form-control">
</div>
<div class="form-group">
<label class="control-label">Description</label>
<input id="GalleryImages[0].Description" name="GalleryImages[0].Description"
class="form-control">
</div>
<input id="GalleryImages[0].ImageFile" type="file" class="form-control"
accept="image/jpeg, image/png, image/gif" name="GalleryImages[0].ImageFile"
style="display:none;">
</div>
</div>
</div>
</div>
<div class="form-group">
<input type="submit" value="Create" class="btn btn-primary">
</div>
<input name="__RequestVerificationToken" type="hidden" value="xxx">
</form>
When there's more than one image trying to be uploaded, only the first image shows up the in the Fiddler info. I can also upload that or anything else if it would be helpful. I tried to include everything though. Is there a better way to accomplish this? I'm thinking about trying to hook into imgur or something similar if I can't work this out.
You should use your input like this :
<input type="file" multiple="multiple" name="files" id="files" />
I don't know if you can use the type="image" here, but you can certainly use your controler to check if the user only uploaded images.
Or you may be able to add this parameter to the input.
accept="image/png, image/jpeg"
The form fields do not return the value of the form even thought the asp-controller and asp-action is stated.
The form does go to the right controller function and returns the right view, however, it does the form object is NULL.
#using ActionAugerMVC.Models
#model Tuple<IEnumerable<Cities>,Content,IEnumerable<Content>,Quote>
#addTagHelper "*,Microsoft.AspNetCore.Mvc.TagHelpers"
<div class="sidebar__item">
<p class="subheading">Instant Quote Request</p>
<form class="register__form" role="form" asp-controller="Plumbing" asp-action="QuoteForm" method="post">
<div class="text-danger" asp-validation-summary="All"></div>
<div class="form-group">
<label class="sr-only">Full Name </label>
<input asp-for="#Model.Item4.FullName" type="text" class="form-control" placeholder="Full name">
</div>
<div class="form-group">
<label class="sr-only">Your phone</label>
<input asp-for="#Model.Item4.Phone" type="tel" class="form-control" placeholder="Your phone">
<span asp-validation-for="#Model.Item4.Phone" class="text-danger"></span>
</div>
<div class="form-group">
<label class="sr-only">E-mail</label>
<input asp-for="#Model.Item4.Email" type="email" class="form-control" placeholder="E-mail">
<span asp-validation-for="#Model.Item4.Email" class="text-danger"></span>
</div>
<div class="form-group">
<label class="sr-only">Your Message</label>
<input asp-for="#Model.Item4.Message" type="text" class="form-control" placeholder="Your Message">
</div>
<input type="submit" value="Get a Quote Now" class="btn btn-accent btn-block">
</form>
</div> <!-- .sidebar__item -->
And the Controller looks like this, with the Quote object being null.
The hard coded, values appear correctly in the view, but the Quote object returned by the form is null.
[HttpPost]
public IActionResult QuoteForm(Quote quote)
{
if (ModelState.IsValid)
{
/* quote.FullName = "Umar Aftab";
quote.Email = "test#email.com";
quote.City = "Calgary";
quote.Message = "Test Message";
quote.Phone = "6474543769";
*/
}
return View(quote);
}
The issue is your use of a Tuple as your view's model combined with asp-for. For example, with something like:
<input asp-for="#Model.Item4.FullName" type="text" class="form-control" placeholder="Full name">
The name of the input is going to end up as Item4.FullName. However, your action accepts only Quote, which means the modelbinder needs the input to be named just FullName in order to bind it properly. You either need to accept the same model the view uses (though I've never tried posting a Tuple so not sure if that will even work), or you can use a partial view to work around the issue.
Essentially, you just would need to move all the fields related to just Quote to a partial view. Then, in this view, you can include them via:
#Html.Partial("_QuoteFields", Model.Item4)
That should be enough psych Razor out enough to just name the fields like FullName instead of Item4.FullName. If it's not, then you may need to reset the HtmlFieldPrefix, via:
#Html.Partial("_QuoteFields, Model.Item4, new ViewDataDictionary(ViewData) { TemplateInfo = new TemplateInfo { HtmlFieldPrefix = "" } })
The model on your view is different than the model you're trying to bind it to in the controller. You're not going to get the key/value pairs to match up
Put your razor in a partial view with Quote as the model and try that.
_QuoteForm.cshtml
#model Quote
<div class="form-group">
<label class="sr-only">Full Name </label>
<input asp-for="FullName" type="text" class="form-control" placeholder="Full name">
</div>
<div class="form-group">
<label class="sr-only">Your phone</label>
<input asp-for="Phone" type="tel" class="form-control" placeholder="Your phone">
<span asp-validation-for="Phone" class="text-danger"></span>
</div>
<div class="form-group">
<label class="sr-only">E-mail</label>
<input asp-for="Email" type="email" class="form-control" placeholder="E-mail">
<span asp-validation-for="Email" class="text-danger"></span>
</div>
<div class="form-group">
<label class="sr-only">Your Message</label>
<input asp-for="Message" type="text" class="form-control" placeholder="Your Message">
</div>
OriginalView.cshtml
using ActionAugerMVC.Models
#model Tuple<IEnumerable<Cities>,Content,IEnumerable<Content>,Quote>
#addTagHelper "*,Microsoft.AspNetCore.Mvc.TagHelpers"
<div class="sidebar__item">
<p class="subheading">Instant Quote Request</p>
<form class="register__form" role="form" asp-controller="Plumbing" asp-action="QuoteForm" method="post">
<div class="text-danger" asp-validation-summary="All"></div>
#Html.Partial("_QuoteForm", Model.Item4)
<input type="submit" value="Get a Quote Now" class="btn btn-accent btn-block">
</form>
</div> <!-- .sidebar__item -->