Diplomarbeit-Absolventenverein/oqtane.framework
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Use ComponentTagHelper parameters on Blazor Server for passing state to allow pre-rendering to function properly ( ComponentTagHelper parameters do not work on Blazor WebAssembly - likely a .NET 5 bug )

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This commit is contained in:
Shaun Walker
2021-09-23 17:16:51 -04:00
parent c1b482e0c0
commit 005843ef2d
4 changed files with 45 additions and 30 deletions
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57
Oqtane.Client/App.razor
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@ -4,37 +4,44 @@
@if (_initialized)
{
<div style="@_display">
@if (!_installation.Success)
@if (!_installation.Success)
{
<Installer />
}
else
{
@if (string.IsNullOrEmpty(_installation.Message))
{
<Installer />
}
else
{
@if (string.IsNullOrEmpty(_installation.Message))
{
<div style="@_display">
<CascadingAuthenticationState>
<CascadingValue Value="@PageState">
<SiteRouter Runtime="@Runtime" RenderMode="@RenderMode" OnStateChange="@ChangeState" />
</CascadingValue>
</CascadingAuthenticationState>
}
else
{
<div class="app-alert">
@_installation.Message
</div>
}
</div>
}
</div>
else
{
<div class="app-alert">
@_installation.Message
</div>
}
}
}
@code {
[Parameter]
public string AntiForgeryToken { get; set; }
[Parameter]
public string Runtime { get; set; }
[Parameter]
public string RenderMode { get; set; }
private bool _initialized = false;
private string _display = "display: none;";
private Installation _installation = new Installation { Success = false, Message = "" };
private string Runtime = "";
private string RenderMode = "";
private PageState PageState { get; set; }
@ -44,6 +51,7 @@
if (_installation.Alias != null)
{
SiteState.Alias = _installation.Alias;
SiteState.AntiForgeryToken = AntiForgeryToken;
}
else
{
@ -56,10 +64,15 @@
{
if (firstRender)
{
var interop = new Interop(JSRuntime);
SiteState.AntiForgeryToken = await interop.GetElementByName(Constants.RequestVerificationToken);
Runtime = await interop.GetElementByName("app_runtime");
RenderMode = await interop.GetElementByName("app_rendermode");
if (string.IsNullOrEmpty(AntiForgeryToken))
{
// parameter values are not set when running on WebAssembly (seems to be a .NET 5 bug) - need to retrieve using JSInterop
var interop = new Interop(JSRuntime);
AntiForgeryToken = await interop.GetElementByName(Constants.RequestVerificationToken);
SiteState.AntiForgeryToken = AntiForgeryToken;
Runtime = await interop.GetElementByName("app_runtime");
RenderMode = await interop.GetElementByName("app_rendermode");
}
_display = "";
StateHasChanged();
}