Open
Description
Is there an existing issue for this?
- I have searched the existing issues
Describe the bug
I have a model like below that I bind to an EditForm (just the name property). But on post the model is not created.
public class MyModel
{
public string? Name { get; set; }
// Removing this line fixes the issue.
public MyModel? Parent { get; set; }
}Expected Behavior
Model should be created, or it should fail or there should be some logging explain they issue.
Steps To Reproduce
- Create a new Blazor project.
- Open Home.razor, and replace with the code below.
- Run the application.
- Enter a name and press enter.
- Check in
OnInitializedif Model is created. - Remove the
Parentproperty and see the difference.
Repro project: https://github.com/pekspro/AspNetIssues/tree/Issue61341
@page "/"
@inject ILogger<Home> Logger;
<PageTitle>Home</PageTitle>
<EditForm EditContext="FormContext" OnSubmit="Submit" FormName="RequestForm">
<h4>Name</h4>
<p>
<InputText @bind-Value="Model!.Name" />
</p>
</EditForm>
@code {
[SupplyParameterFromForm(FormName = "RequestForm")]
private MyModel? Model { get; set; }
private EditContext FormContext = null!;
public class MyModel
{
public string? Name { get; set; }
// Removing this line fixes the issue.
public MyModel? Parent { get; set; }
}
protected override void OnInitialized()
{
// Model will aways be null, even when the form has been submitted.
if (Model == null)
{
Model = new();
}
FormContext = new EditContext(Model);
}
private void Submit()
{
Logger.LogInformation($"Name: {Model?.Name}");
}
}Exceptions (if any)
No response
.NET Version
9.0.201
Anything else?
I have seen similar issues when I have model that is used by EF-core. Sometimes it work, other times it doesn't. Haven't found a simple why to replicate this. But in these situation the model is created, but all properties has the default values.
I situations like this I would prefer an error or some explanation in the logs, I haven't found any so far.