I am customizing the Login pages here How can I validate the username and password if they are incorrect and show validation error in login page #9061

7 Answer(s)

• 

  0

  maliming created 20 days ago

  Support Team Fullstack Developer

  hi

  You can use Alerts.Warning(L["Message"]);.

  try
  {
     //...
  }
  catch (Exception ex)
  {
      // Handle exceptions from base login or tenant context switching
      System.Diagnostics.Debug.WriteLine($"Login Processing Error: {ex.Message}");
      ModelState.AddModelError("", "An unexpected error occurred during login. Please try again.");
      
      Alerts.Warning(L["Message"]);
      
      return Page();
  }
  
  

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• 

  0

  Ravikumar-Morrawthu_HON created 19 days ago

    public override async Task<IActionResult> OnPostAsync(string action)
          {
              // Decode the entire query string to handle encoded parameters
              var decodedQueryString = Uri.UnescapeDataString(Request.QueryString.ToString());
  
  
              // Extract the username and password from the posted form data
              var username = Request.Form["LoginInput.UserNameOrEmailAddress"].ToString();
              var password = Request.Form["LoginInput.Password"].ToString(); 
  
                      // Log the decoded query string for debugging purposes
                      System.Diagnostics.Debug.WriteLine(decodedQueryString);
  
              // Parse the decoded query string manually to extract parameters
              var queryParams = Microsoft.AspNetCore.WebUtilities.QueryHelpers.ParseQuery(decodedQueryString);
  
              // Extract the tenantKey from the query parameters
              if (!queryParams.TryGetValue("tenantKey", out var tenantKey))
              {
                  //return BadRequest("Tenant key is not provided in the query parameters.");
              }
            //  var resolvedUser = await _identityUserRepository.FindAsync()
  
              var resolvedTenant = await _tenantRepository.FindByNameAsync(tenantKey);
             // var tenantIdOrName = resolvedTenantId.TenantIdOrName;
              if (resolvedTenant == null)
              {
                  // Handle the case where the tenant could not be resolved (e.g., return an error view or redirect).
                  //return NotFound("Tenant could not be resolved.");
              }
  
  
              // Step 3: Switch tenant and call base login logic with error handling
              try
              {
                  using (CurrentTenant.Change(resolvedTenant?.Id, resolvedTenant?.Name ?? "Default"))
                  {
                      System.Diagnostics.Debug.WriteLine(CurrentTenant?.Name);
  
                      // Check ModelState before proceeding (e.g., from data annotations)
                      if (!ModelState.IsValid)
                      {
                          var errors = ModelState.Values.SelectMany(v => v.Errors).Select(e => e.ErrorMessage);
                          System.Diagnostics.Debug.WriteLine("Pre-Login Validation Errors: " + string.Join(", ", errors));
                          return Page();
                      }
  
                      // Call base method with try-catch for additional safety
                      var result = await base.OnPostAsync(action);
  
                      // Check if base method added errors to ModelState (e.g., invalid credentials)
                      if (!ModelState.IsValid)
                      {
                          var errors = ModelState.Values.SelectMany(v => v.Errors).Select(e => e.ErrorMessage);
                          System.Diagnostics.Debug.WriteLine("Post-Login Errors: " + string.Join(", ", errors));
                          return Page();
                      }
  
                      return result; // Success: redirect or other action result
                  }
              }
              catch (Exception ex)
              {
                  // Handle exceptions from base login or tenant context switching
                  System.Diagnostics.Debug.WriteLine($"Login Processing Error: {ex.Message}");
                  ModelState.AddModelError("", "An unexpected error occurred during login. Please try again.");
                  return Page();
              }
  
              //using (CurrentTenant.Change(resolvedTenant?.Id, resolvedTenant?.Name))
              //{
              //    System.Diagnostics.Debug.WriteLine(CurrentTenant?.Name);
  
              //    // Call base method and handle its result
              //    var result = await base.OnPostAsync(action);
  
              //    // Check if base method added errors to ModelState
              //    if (!ModelState.IsValid)
              //    {
              //        var errors = ModelState.Values.SelectMany(v => v.Errors).Select(e => e.ErrorMessage);
              //        System.Diagnostics.Debug.WriteLine("Post-Login Errors: " + string.Join(", ", errors));
              //        return Page();
              //    }
  
              //    return result;
              //}
          }
      }
  
  }
  

  Here in the OnPost method. I am not getting Any Exception when I am logging with incorrect password or username

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• 

  0

  maliming created 19 days ago

  Support Team Fullstack Developer

  hi

  The base OnPostAsync method will catch the exception and show an error message in the Login page.

  Can you share why you try to override the page?

  What is your purpose?

  Thanks.

  

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• 

  0

  Ravikumar-Morrawthu_HON created 19 days ago

  I want to customize this login page when I am typing incorrect password, I am not getting any error like "Invalid username or password" Alert and it not catching any exception as well. I am following this documentation https://abp.io/docs/2.8/How-To/Customize-Login-Page-MVC Below I am providing my complete code login.chtml @page @using Hon.IFS.Admin @using Microsoft.AspNetCore.Mvc.Localization @using Volo.Abp.Account.Localization @using Volo.Abp.Account.Settings @using Volo.Abp.Account.Web.Pages.Account @using Volo.Abp.AspNetCore.Mvc.UI.Theming @using Volo.Abp.Identity @using Volo.Abp.Settings @model Hon.IFS.Admin.Pages.Account.CustomLoginModel @inject IHtmlLocalizer<AccountResource> L @inject IThemeManager ThemeManager @inject Volo.Abp.Settings.ISettingProvider SettingProvider @inject AdminBrandingProvider adminBrandingProvider

  @{ Layout = ThemeManager.CurrentTheme.GetAccountLayout(); }

  @section scripts { <abp-script-bundle name="@typeof(Hon.IFS.Admin.Pages.Account.CustomLoginModel).FullName"> <abp-script src="/Pages/Account/Login.js" /> </abp-script-bundle> <script src="https://ajax.aspnetcdn.com/ajax/jquery/jquery-3.5.1.min.js"></script> <script src="https://ajax.aspnetcdn.com/ajax/jquery.unobtrusive-ajax/3.2.6/jquery.unobtrusive-ajax.min.js"></script> }

  <style> .card-padding { padding: 0.5rem !important; /* Adjusted back to 0.5rem for consistency */ }

  .full-height {
      min-height: 100vh; /* Kept at 100vh for full height */
      display: flex;
      align-items: flex-start; /* Move content to the top */
      padding-top: 50px; /* Adds space from the top to shift content down slightly */
  }
  
  .static-content {
      padding-top: 40px;
      padding-right: 20px;
  }
  
  .red-button {
      background-color: red !important;
      border-color: red !important;
      color: white !important;
  }
  
  .form-check-input.small-switch {
      width: 2em; /* Adjust width */
      height: 1em; /* Adjust height */
  }
  

  </style>

  <div class="row" style="padding-top: 20px; padding-left: 20px"> <div class="col-12 col-md-6 static-content"> <h2 style="color: red">STAY</h2> <h2 style="color: red">CONNECTED</h2> <h2 style="color: white">STAY</h2> <h2 style="color: white">PROTECTED</h2> </div>

  <div class="col-12 col-md-5 align-content-end pe-md-5">
      <div style="display: flex; justify-content: center; align-items: center;">
          <h3 style="color: white">@adminBrandingProvider.AppName</h3>
      </div>
  
      <div class="card shadow-sm rounded card-padding" style="max-height: 400px; max-width: 600px;">
          <div class="card-body p-3">
              <h3 class="text-center mb-3">@L["Login"]</h3>
  
  
                  <form method="post" class="mt-1">
                      <div class="mb-1">
                          <label asp-for="LoginInput.UserNameOrEmailAddress" class="form-label"></label>
                          <input asp-for="LoginInput.UserNameOrEmailAddress" class="form-control form-control-sm" />
                          <span asp-validation-for="LoginInput.UserNameOrEmailAddress" class="text-danger"></span>
                      </div>
                      <div class="mb-2">
                          <label asp-for="LoginInput.Password" class="form-label"></label>
                          <div class="input-group">
                              <input type="password" class="form-control form-control-sm" autocomplete="new-password"
                                     maxlength="@IdentityUserConsts.MaxPasswordLength" asp-for="LoginInput.Password" />
                          </div>
                          <span asp-validation-for="LoginInput.Password" class="text-danger"></span>
                      </div>
                  <div class="row">
                      <div class="col">
                          <div class="form-check form-switch mb-3">
                              <input type="checkbox" class="form-check-input" id="LoginInput_RememberMe" name="LoginInput.RememberMe" value="true" />
                              <label class="form-check-label " for="LoginInput_RememberMe">Remember Me</label>
                          </div>
                      </div>
                      <div class="col text-end">
                          <a href="@Url.Page("./ForgotPassword", new { returnUrl = Model.ReturnUrl, returnUrlHash = Model.ReturnUrlHash })">@L["ForgotPassword"]</a>
                      </div>
                  </div>
                      <div class="d-grid gap-1">
                          <abp-button type="submit" button-type="Primary" name="Action" value="Login" class="btn-sm mt-2 red-button">@L["Login"]</abp-button>
                          @if (Model.ShowCancelButton)
                          {
                              <abp-button type="submit" button-type="Secondary" formnovalidate="formnovalidate" name="Action" value="Cancel" class="btn-sm mt-2">@L["Cancel"]</abp-button>
                          }
                      </div>
                  </form>
              
     
              
              @if (Model.VisibleExternalProviders.Any())
              {
                  <div class="mt-1">
                      <h4>@L["UseAnotherServiceToLogIn"]</h4>
                      <form asp-page="./Login" asp-page-handler="ExternalLogin" asp-route-returnUrl="@Model.ReturnUrl" asp-route-returnUrlHash="@Model.ReturnUrlHash" method="post">
                          @foreach (var provider in Model.VisibleExternalProviders)
                          {
                              <button type="submit" class="btn btn-primary btn-sm m-1" name="provider" value="@provider.AuthenticationScheme" title="@L["GivenTenantIsNotAvailable", provider.DisplayName]">@provider.DisplayName</button>
                          }
                      </form>
                  </div>
              }
  
  
  
         @*      @if (!Model.EnableLocalLogin && !Model.VisibleExternalProviders.Any())
              {
                  <div class="alert alert-warning">
                      <strong>@L["InvalidLoginRequest"]</strong>
                      @L["ThereAreNoLoginSchemesConfiguredForThisClient"]
                  </div>
              } *@
          </div>
      </div>
  
  </div>
  

  </div>

  login.chtml.cs using Microsoft.AspNetCore.Authentication; using Microsoft.AspNetCore.Http; using Microsoft.AspNetCore.Http.Extensions; using Microsoft.AspNetCore.Identity; using Microsoft.AspNetCore.Mvc; using Microsoft.AspNetCore.Mvc.RazorPages; using Microsoft.Extensions.Options; using Owl.reCAPTCHA; using System; using System.Linq; using System.Threading.Tasks; using Volo.Abp.Account.ExternalProviders; using Volo.Abp.Account.Public.Web; using Volo.Abp.Account.Public.Web.Pages.Account; using Volo.Abp.Account.Security.Recaptcha; using Volo.Abp.AspNetCore.MultiTenancy; using Volo.Abp.DependencyInjection; using Volo.Abp.Identity; using Volo.Abp.MultiTenancy; using Volo.Abp.Security.Claims; using Volo.Abp.Ui.Branding; using Volo.Saas.Tenants;

  namespace Hon.IFS.Admin.Pages.Account { [ExposeServices(typeof(CustomLoginModel), typeof(LoginModel))] public class CustomLoginModel : LoginModel { private readonly ITenantRepository _tenantRepository; public AdminBrandingProvider _adminBrandingProvider; public DefaultBrandingProvider _defaultBrandingProvider; public IIdentityUserRepository _identityUserRepository; public CustomLoginModel( IAuthenticationSchemeProvider schemeProvider, IOptions<AbpAccountOptions> accountOptions, IAccountExternalProviderAppService accountExternalProviderAppService, ICurrentPrincipalAccessor currentPrincipalAccessor, IAbpRecaptchaValidatorFactory recaptchaValidatorFactory, IOptions<IdentityOptions> identityOptions, IOptionsSnapshot<reCAPTCHAOptions> reCaptchaOptions, ITenantRepository tenantRepository, AdminBrandingProvider adminBrandingProvider, DefaultBrandingProvider defaultBrandingProvider, IIdentityUserRepository identityUserRepository) : base(schemeProvider, accountOptions, recaptchaValidatorFactory, accountExternalProviderAppService, currentPrincipalAccessor, identityOptions, reCaptchaOptions) { _tenantRepository = tenantRepository; _adminBrandingProvider = adminBrandingProvider; _defaultBrandingProvider = defaultBrandingProvider; _identityUserRepository = identityUserRepository; } public override async Task<IActionResult> OnGetAsync() { // Decode the entire query string to handle encoded parameters var decodedQueryString = Uri.UnescapeDataString(Request.QueryString.ToString());

          // Log the decoded query string for debugging purposes
          System.Diagnostics.Debug.WriteLine(decodedQueryString);
  
          // Parse the decoded query string manually to extract parameters
          var queryParams = Microsoft.AspNetCore.WebUtilities.QueryHelpers.ParseQuery(decodedQueryString);
  
  
          if (queryParams.TryGetValue("tenantKey", out var resolvedTenant))
          {
              _adminBrandingProvider.SetAppName(resolvedTenant.ToString());
              ViewData["sathavva"] = resolvedTenant; 
          }
          return await base.OnGetAsync();
      }
      public override async Task<IActionResult> OnPostAsync(string action)
      {
          // Decode the entire query string to handle encoded parameters
          var decodedQueryString = Uri.UnescapeDataString(Request.QueryString.ToString());
  
  
          // Extract the username and password from the posted form data
          var username = Request.Form["LoginInput.UserNameOrEmailAddress"].ToString();
          var password = Request.Form["LoginInput.Password"].ToString();
  
        
  
                  // Log the decoded query string for debugging purposes
                  System.Diagnostics.Debug.WriteLine(decodedQueryString);
  
          // Parse the decoded query string manually to extract parameters
          var queryParams = Microsoft.AspNetCore.WebUtilities.QueryHelpers.ParseQuery(decodedQueryString);
  
          // Extract the tenantKey from the query parameters
          if (!queryParams.TryGetValue("tenantKey", out var tenantKey))
          {
              //return BadRequest("Tenant key is not provided in the query parameters.");
          }
        //  var resolvedUser = await _identityUserRepository.FindAsync()
  
          var resolvedTenant = await _tenantRepository.FindByNameAsync(tenantKey);
         // var tenantIdOrName = resolvedTenantId.TenantIdOrName;
          if (resolvedTenant == null)
          {
              // Handle the case where the tenant could not be resolved (e.g., return an error view or redirect).
              //return NotFound("Tenant could not be resolved.");
          }
  
  
          // Step 3: Switch tenant and call base login logic with error handling
          try
          {
              using (CurrentTenant.Change(resolvedTenant?.Id, resolvedTenant?.Name ?? "Default"))
              {
                  System.Diagnostics.Debug.WriteLine(CurrentTenant?.Name);
  
                  // Check ModelState before proceeding (e.g., from data annotations)
                  if (!ModelState.IsValid)
                  {
                      var errors = ModelState.Values.SelectMany(v => v.Errors).Select(e => e.ErrorMessage);
                      System.Diagnostics.Debug.WriteLine("Pre-Login Validation Errors: " + string.Join(", ", errors));
                      return Page();
                  }
  
                  // Call base method with try-catch for additional safety
                  var result = await base.OnPostAsync(action);
  
               
  
                 
  
                  // Check if base method added errors to ModelState (e.g., invalid credentials)
                  if (!ModelState.IsValid)
                  {
                      var errors = ModelState.Values.SelectMany(v => v.Errors).Select(e => e.ErrorMessage);
                      System.Diagnostics.Debug.WriteLine("Post-Login Errors: " + string.Join(", ", errors));
  
                      // Add custom error message if no specific model errors regarding the username/password
                      ModelState.AddModelError("", "Invalid username or password.");
                      return Page();
                  }
  
                  return result; // Success: redirect or other action result
              }
          }
          catch (Exception ex)
          {
              // Handle exceptions from base login or tenant context switching
              System.Diagnostics.Debug.WriteLine($"Login Processing Error: {ex.Message}");
              ModelState.AddModelError("", "An unexpected error occurred during login. Please try again.");
              Alerts.Warning(L["Message"]);
              return Page();
          }
  
          //using (CurrentTenant.Change(resolvedTenant?.Id, resolvedTenant?.Name))
          //{
          //    System.Diagnostics.Debug.WriteLine(CurrentTenant?.Name);
  
          //    // Call base method and handle its result
          //    var result = await base.OnPostAsync(action);
  
          //    // Check if base method added errors to ModelState
          //    if (!ModelState.IsValid)
          //    {
          //        var errors = ModelState.Values.SelectMany(v => v.Errors).Select(e => e.ErrorMessage);
          //        System.Diagnostics.Debug.WriteLine("Post-Login Errors: " + string.Join(", ", errors));
          //        return Page();
          //    }
  
          //    return result;
          //}
      }
  }
  

  }

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  0

  maliming created 19 days ago

  Support Team Fullstack Developer

  hi

  Can you share a test project with your custom code with liming.ma@volosoft.com?

  Thanks

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• 

  0

  Ravikumar-Morrawthu_HON created 19 days ago

  @await Component.InvokeAsync(typeof(PageAlertsViewComponent))
  

  it resolved after adding this line in index.chtml

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• 

  0

  maliming created 19 days ago

  Support Team Fullstack Developer

  Great. We also use it in theme layout.

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