Fluxor.Blazor.Persistence 1.2.2

blazor-fluxor-persistence

Fluxor state persistence for web blazor application using LocalStorage. Currently supports LocalStorage only. Supports LocalStorage persistence only which is default, if set to other options - state will not persist.

Usage

In Program.cs file Add UsePersistence to FluxorOptions

Install Fluxor.Blazor.Persistence

Add below code to the program.cs file

builder.Services
  .AddFluxor(o =>
  {
    o.ScanAssemblies(typeof(Program).Assembly)
    .UseRouting()
    .UsePersistence();
  });

Using routing middleware but do not want to persist routes (default value for PersistOptions.PersistRoutes is true)

builder.Services
  .AddFluxor(o =>
  {
    o.ScanAssemblies(typeof(Program).Assembly)
    .UseRouting()
    .UsePersistence(x => x.PersistRoutes = false);
  });

Exceptions

Any exception thrown when loading/saving the persist state are added to `StatePersistenceFailureState' This errors can be retrieved from state

This exceptions are cleared on browser refresh or close. The exceptions can also be cleared by dispatching action

e.g. Razor component 'StateErrors.razor'

@page "/persist-state-errors"
@inherits FluxorComponent
@using Fluxor.Blazor.Persistence.Store
@inject IState<StatePersistenceFailureState> State
@inject IDispatcher Dispatcher;

<h3>Errors</h3>

@if (State.Value.Errors.Count == 0)
{
  <div>No Errors</div>
}
else 
{
  @foreach(var e in State.Value.Errors)
  {
    <div class="row">
      <span class="col1">@e.ActionType</span>
      <span class="col2">@e.FeatureName</span>
      <span class="col3">@e.Exception?.Message</span>
    </div>
  }

  <button class="btn btn-outline" @onclick="ClearErrors">Clear Errors</button>
}

@code {
  protected override void OnInitialized()
  {
    base.OnInitialized();
  }

  public void ClearErrors() 
  {
    Dispatcher.Dispatch(new ClearStatePersistenceFailureStateAction());
  }
}

Release 1.2.0 change log

public class PersistOtions
{
  public PersistenceType PersistenceType { get; set; } = PersistenceType.LocalStorage;
  public string PersistenceKey { get; set; } = "Fluxor.Blazor.Persistence";
  public bool PersistRoutes { get; set; } = true;
}

Added new PersistRoutes flag - default true.

Release 1.2.1 change log

Issue: Persisted state for the feature is null, causes initial state to be null.
Fix: do not restore feature state if persisted loaded state is null.

Release 1.2.2 change log

Added .net7.0 as target framework