Add a way to specify username to send notifications to

src/OrchardCore.Modules/OrchardCore.Liquid/Services/LiquidTemplateManager.cs

@@ -124,8 +124,17 @@ public LiquidViewTemplate GetCachedTemplate(string source)
 
         public bool Validate(string template, out IEnumerable<string> errors)
         {
+            if (string.IsNullOrEmpty(template))
+            {
+                errors = [];
+
+                return true;
+            }
+
             var success = _liquidViewParser.TryParse(template, out _, out var error);
-            errors = new[] { error };
+
+            errors = [error];
+
             return success;
         }
     }

src/OrchardCore.Modules/OrchardCore.Notifications/Activities/NotifyUserTask.cs

@@ -1,41 +1,61 @@
+using System;
 using System.Collections.Generic;
-using System.Linq;
 using System.Text.Encodings.Web;
 using System.Threading.Tasks;
 using Microsoft.Extensions.Localization;
 using Microsoft.Extensions.Logging;
 using OrchardCore.Users;
+using OrchardCore.Users.Indexes;
 using OrchardCore.Users.Models;
 using OrchardCore.Workflows.Models;
 using OrchardCore.Workflows.Services;
+using YesSql;
+using YesSql.Services;
 
 namespace OrchardCore.Notifications.Activities;
 
 public class NotifyUserTask : NotifyUserTaskActivity<NotifyUserTask>
 {
+    private readonly ISession _session;
+
     public NotifyUserTask(
        INotificationService notificationCoordinator,
        IWorkflowExpressionEvaluator expressionEvaluator,
        HtmlEncoder htmlEncoder,
        ILogger<NotifyUserTask> logger,
-       IStringLocalizer<NotifyUserTask> localizer
+       IStringLocalizer<NotifyUserTask> stringLocalizer,
+       ISession session
    ) : base(notificationCoordinator,
        expressionEvaluator,
        htmlEncoder,
        logger,
-       localizer)
+       stringLocalizer)
     {
+        _session = session;
     }
 
-    public override LocalizedString DisplayText => S["Notify User Task"];
+    public override LocalizedString DisplayText => S["Notify Specific Users Task"];
+
+    public WorkflowExpression<string> UserNames
+    {
+        get => GetProperty(() => new WorkflowExpression<string>());
+        set => SetProperty(value);
+    }
 
-    protected override Task<IEnumerable<IUser>> GetUsersAsync(WorkflowExecutionContext workflowContext, ActivityContext activityContext)
+    protected override async Task<IEnumerable<IUser>> GetUsersAsync(WorkflowExecutionContext workflowContext, ActivityContext activityContext)
     {
-        if (workflowContext.Input.TryGetValue("User", out var userObject) && userObject is User user && user.IsEnabled)
+        if (!string.IsNullOrEmpty(UserNames.Expression))
         {
-            return Task.FromResult<IEnumerable<IUser>>(new[] { user });
+            var expression = await _expressionEvaluator.EvaluateAsync(UserNames, workflowContext, null);
+
+            var userNames = expression.Split(',', StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries);
+
+            if (userNames.Length > 0)
+            {
+                return await _session.Query<User, UserIndex>(user => user.NormalizedUserName.IsIn(userNames)).ListAsync();
+            }
         }
 
-        return Task.FromResult(Enumerable.Empty<IUser>());
+        return [];
     }
 }

src/OrchardCore.Modules/OrchardCore.Notifications/Drivers/NotifyUserTaskActivityDisplayDriver.cs

@@ -1,4 +1,4 @@
-using System;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using Microsoft.Extensions.Localization;
 using Microsoft.Extensions.Options;
@@ -18,15 +18,15 @@ namespace OrchardCore.Notifications.Drivers;
 
 public abstract class NotifyUserTaskActivityDisplayDriver<TActivity, TEditViewModel> : ActivityDisplayDriver<TActivity, TEditViewModel>
     where TActivity : NotifyUserTaskActivity
-    where TEditViewModel : NotifyUserTaskActivityViewModel, new()
+    where TEditViewModel : class, new()
 {
     private readonly IHtmlSanitizerService _htmlSanitizerService;
     private readonly ILiquidTemplateManager _liquidTemplateManager;
     private readonly NotificationOptions _notificationOptions;
 
     protected readonly IStringLocalizer S;
 
-    protected virtual string EditShapeType => $"{nameof(NotifyUserTaskActivity)}_Fields_Edit";
+    protected virtual string EditShapeType { get; } = null;
 
     public NotifyUserTaskActivityDisplayDriver(
         IHtmlSanitizerService htmlSanitizerService,
@@ -40,45 +40,69 @@ public NotifyUserTaskActivityDisplayDriver(
         S = stringLocalizer;
     }
 
-    public override IDisplayResult Edit(TActivity model)
+    public override IDisplayResult Edit(TActivity activity)
     {
-        return Initialize<TEditViewModel>(EditShapeType, viewModel =>
+        var results = new List<IDisplayResult>();
+
+        if (!string.IsNullOrEmpty(EditShapeType))
         {
-            return EditActivityAsync(model, viewModel);
-        }).Location("Content");
+            results.Add(Initialize<TEditViewModel>(EditShapeType, viewModel =>
+            {
+                return EditActivityAsync(activity, viewModel);
+            }).Location("Content"));
+        }
+
+        results.Add(Initialize<NotifyUserTaskActivityViewModel>("NotifyUserTaskActivity_Fields_Edit", model =>
+        {
+            model.Subject = activity.Subject.Expression;
+            model.Summary = activity.Summary.Expression;
+            model.TextBody = activity.TextBody.Expression;
+            model.HtmlBody = activity.HtmlBody.Expression;
+            model.IsHtmlPreferred = activity.IsHtmlPreferred;
+        }).Location("Content"));
+
+        return Combine(results);
     }
 
-    public async override Task<IDisplayResult> UpdateAsync(TActivity model, IUpdateModel updater)
+    public async override Task<IDisplayResult> UpdateAsync(TActivity activity, IUpdateModel updater)
     {
-        var viewModel = new TEditViewModel();
-        await updater.TryUpdateModelAsync(viewModel, Prefix);
-
-        if (!_liquidTemplateManager.Validate(viewModel.Subject, out var subjectErrors))
-        {
-            updater.ModelState.AddModelError(Prefix, nameof(viewModel.Subject), S["Subject field does not contain a valid Liquid expression. Details: {0}", string.Join(' ', subjectErrors)]);
-        }
+        var model = new NotifyUserTaskActivityViewModel();
+
+        await updater.TryUpdateModelAsync(model, Prefix);
 
-        if (!_liquidTemplateManager.Validate(viewModel.Summary, out var summaryErrors))
+        if (!_liquidTemplateManager.Validate(model.Subject, out var subjectErrors))
         {
-            updater.ModelState.AddModelError(Prefix, nameof(viewModel.Summary), S["Summary field does not contain a valid Liquid expression. Details: {0}", string.Join(' ', summaryErrors)]);
+            updater.ModelState.AddModelError(Prefix, nameof(model.Subject), S["Subject field does not contain a valid Liquid expression. Details: {0}", string.Join(' ', subjectErrors)]);
         }
 
-        if (!_liquidTemplateManager.Validate(viewModel.TextBody, out var textBodyErrors))
+        if (!_liquidTemplateManager.Validate(model.Summary, out var summaryErrors))
         {
-            updater.ModelState.AddModelError(Prefix, nameof(viewModel.TextBody), S["Text Body field does not contain a valid Liquid expression. Details: {0}", string.Join(' ', textBodyErrors)]);
+            updater.ModelState.AddModelError(Prefix, nameof(model.Summary), S["Summary field does not contain a valid Liquid expression. Details: {0}", string.Join(' ', summaryErrors)]);
         }
 
-        if (!_liquidTemplateManager.Validate(viewModel.HtmlBody, out var htmlBodyErrors))
+        if (!_liquidTemplateManager.Validate(model.TextBody, out var textBodyErrors))
         {
-            updater.ModelState.AddModelError(Prefix, nameof(viewModel.HtmlBody), S["HTML Body field does not contain a valid Liquid expression. Details: {0}", string.Join(' ', htmlBodyErrors)]);
+            updater.ModelState.AddModelError(Prefix, nameof(model.TextBody), S["Text Body field does not contain a valid Liquid expression. Details: {0}", string.Join(' ', textBodyErrors)]);
         }
 
-        if (updater.ModelState.IsValid)
+        if (!_liquidTemplateManager.Validate(model.HtmlBody, out var htmlBodyErrors))
         {
-            await UpdateActivityAsync(viewModel, model);
+            updater.ModelState.AddModelError(Prefix, nameof(model.HtmlBody), S["HTML Body field does not contain a valid Liquid expression. Details: {0}", string.Join(' ', htmlBodyErrors)]);
         }
 
-        return Edit(model);
+        activity.Subject = new WorkflowExpression<string>(model.Subject);
+        activity.Summary = new WorkflowExpression<string>(_htmlSanitizerService.Sanitize(model.Summary ?? string.Empty));
+        activity.TextBody = new WorkflowExpression<string>(model.TextBody);
+        activity.HtmlBody = new WorkflowExpression<string>(_notificationOptions.DisableNotificationHtmlBodySanitizer ? model.HtmlBody : _htmlSanitizerService.Sanitize(model.HtmlBody ?? string.Empty));
+        activity.IsHtmlPreferred = model.IsHtmlPreferred;
+
+        var modelOfT = new TEditViewModel();
+
+        await updater.TryUpdateModelAsync(modelOfT, Prefix);
+
+        await UpdateActivityAsync(modelOfT, activity);
+
+        return Edit(activity);
     }
 
     /// <summary>
@@ -96,15 +120,10 @@ protected override ValueTask EditActivityAsync(TActivity activity, TEditViewMode
     /// </summary>
     protected override void EditActivity(TActivity activity, TEditViewModel model)
     {
-        model.Subject = activity.Subject.Expression;
-        model.Summary = activity.Summary.Expression;
-        model.TextBody = activity.TextBody.Expression;
-        model.HtmlBody = activity.HtmlBody.Expression;
-        model.IsHtmlPreferred = activity.IsHtmlPreferred;
     }
 
     /// <summary>
-    /// Updates the activity when the view model is validated.
+    /// Updates the activity.
     /// </summary>
     protected override Task UpdateActivityAsync(TEditViewModel model, TActivity activity)
     {
@@ -114,23 +133,19 @@ protected override Task UpdateActivityAsync(TEditViewModel model, TActivity acti
     }
 
     /// <summary>
-    /// Updates the activity when the view model is validated.
+    /// Updates the activity.
     /// </summary>
     protected override void UpdateActivity(TEditViewModel model, TActivity activity)
     {
-        activity.Subject = new WorkflowExpression<string>(model.Subject);
-        activity.Summary = new WorkflowExpression<string>(_htmlSanitizerService.Sanitize(model.Summary));
-        activity.TextBody = new WorkflowExpression<string>(model.TextBody);
-        activity.HtmlBody = new WorkflowExpression<string>(_notificationOptions.DisableNotificationHtmlBodySanitizer ? model.HtmlBody : _htmlSanitizerService.Sanitize(model.HtmlBody));
-        activity.IsHtmlPreferred = model.IsHtmlPreferred;
+
     }
 
     public override IDisplayResult Display(TActivity activity)
     {
         return Combine(
-            Shape($"{typeof(TActivity).Name}_Fields_Thumbnail", new ActivityViewModel<TActivity>(activity))
+            Shape($"{ActivityName}_Fields_Thumbnail", new ActivityViewModel<TActivity>(activity))
                 .Location("Thumbnail", "Content"),
-            Shape($"{typeof(TActivity).Name}_Fields_Design", new ActivityViewModel<TActivity>(activity))
+            Shape($"{ActivityName}_Fields_Design", new ActivityViewModel<TActivity>(activity))
                 .Location("Design", "Content")
         );
     }
@@ -147,4 +162,6 @@ public NotifyUserTaskActivityDisplayDriver(
         : base(htmlSanitizerService, liquidTemplateManager, notificationOptions, stringLocalizer)
     {
     }
+
+    sealed protected override string EditShapeType { get; } = null;
 }

src/OrchardCore.Modules/OrchardCore.Notifications/Drivers/NotifyUserTaskDisplayDriver.cs

@@ -1,13 +1,21 @@
+using System;
+using System.Linq;
+using System.Threading.Tasks;
 using Microsoft.Extensions.Localization;
 using Microsoft.Extensions.Options;
+using OrchardCore.DisplayManagement.ModelBinding;
+using OrchardCore.DisplayManagement.Views;
 using OrchardCore.Infrastructure.Html;
 using OrchardCore.Liquid;
+using OrchardCore.Mvc.ModelBinding;
 using OrchardCore.Notifications.Activities;
 using OrchardCore.Notifications.Models;
+using OrchardCore.Notifications.ViewModels;
+using OrchardCore.Workflows.Models;
 
 namespace OrchardCore.Notifications.Drivers;
 
-public class NotifyUserTaskDisplayDriver : NotifyUserTaskActivityDisplayDriver<NotifyUserTask>
+public class NotifyUserTaskDisplayDriver : NotifyUserTaskActivityDisplayDriver<NotifyUserTask, NotifyUserTaskViewModel>
 {
     public NotifyUserTaskDisplayDriver(
         IHtmlSanitizerService htmlSanitizerService,
@@ -17,4 +25,33 @@ public NotifyUserTaskDisplayDriver(
         : base(htmlSanitizerService, liquidTemplateManager, notificationOptions, stringLocalizer)
     {
     }
+
+    protected override string EditShapeType { get; } = $"{ActivityName}_Fields_Edit";
+
+    public override async Task<IDisplayResult> UpdateAsync(NotifyUserTask activity, IUpdateModel updater)
+    {
+        var viewModel = new NotifyUserTaskViewModel();
+        await updater.TryUpdateModelAsync(viewModel, Prefix);
+
+        var userNames = viewModel.UserNames?.Split(',', StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries)
+            .Distinct(StringComparer.OrdinalIgnoreCase) ?? [];
+
+        if (!userNames.Any())
+        {
+            updater.ModelState.AddModelError(Prefix, nameof(viewModel.UserNames), S["Please provide at least one username to notify."]);
+        }
+        else
+        {
+            activity.UserNames = new WorkflowExpression<string>(string.Join(", ", userNames));
+        }
+
+        return await base.UpdateAsync(activity, updater);
+    }
+
+    protected override void EditActivity(NotifyUserTask activity, NotifyUserTaskViewModel model)
+    {
+        base.EditActivity(activity, model);
+
+        model.UserNames = activity.UserNames.Expression;
+    }
 }

src/OrchardCore.Modules/OrchardCore.Notifications/ViewModels/NotifyUserTaskViewModel.cs

@@ -0,0 +1,6 @@
+namespace OrchardCore.Notifications.ViewModels;
+
+public class NotifyUserTaskViewModel
+{
+    public string UserNames { get; set; }
+}

src/OrchardCore.Modules/OrchardCore.Notifications/Views/Items/NotifyUserTask.Fields.Design.cshtml

@@ -5,6 +5,6 @@
 @model ActivityViewModel<NotifyUserTask>
 
 <header>
-    <h4><i class="fa-solid fa-envelope" aria-hidden="true"></i>@Model.Activity.GetTitleOrDefault(() => T["Notify user"])</h4>
+    <h4><i class="fa-solid fa-envelope" aria-hidden="true"></i>@Model.Activity.GetTitleOrDefault(() => T["Notify Specific Users"])</h4>
 </header>
 <em>&quot;@Model.Activity.Subject&quot;</em>

src/OrchardCore.Modules/OrchardCore.Notifications/Views/Items/NotifyUserTask.Fields.Edit.cshtml

@@ -0,0 +1,8 @@
+@model NotifyUserTaskViewModel
+
+<div class="mb-3" asp-validation-class-for="UserNames">
+    <label asp-for="UserNames" class="form-label">@T["User names"]</label>
+    <input type="text" asp-for="UserNames" class="form-control" />
+    <span asp-validation-for="UserNames"></span>
+    <span class="hint">@T["Please provide a comma separated list of user names. You may use Liquid syntax."]</span>
+</div>

src/OrchardCore.Modules/OrchardCore.Notifications/Views/Items/NotifyUserTask.Fields.Thumbnail.cshtml

@@ -1,2 +1,2 @@
-<h4 class="card-title"><i class="fa-solid fa-envelope" aria-hidden="true"></i>@T["Notify user"]</h4>
-<p>@T["Notify user"]</p>
+<h4 class="card-title"><i class="fa-solid fa-envelope" aria-hidden="true"></i>@T["Notify Specific Users"]</h4>
+<p>@T["Notify specific users"]</p>

src/OrchardCore.Modules/OrchardCore.Notifications/Views/Items/NotifyUserTaskActivity.Fields.Edit.cshtml

@@ -17,12 +17,14 @@
 <div class="mb-3" asp-validation-class-for="TextBody">
     <label asp-for="TextBody" class="form-label">@T["Text Body"]</label>
     <textarea asp-for="TextBody" rows="5" class="form-control"></textarea>
+    <span asp-validation-for="TextBody"></span>
     <span class="hint">@T["This optional text body does not support HTML. You may use Liquid syntax."]</span>
 </div>
 
 <div class="mb-3" asp-validation-class-for="HtmlBody">
     <label asp-for="HtmlBody" class="form-label">@T["HTML Body"]</label>
     <textarea asp-for="HtmlBody" rows="10" class="form-control"></textarea>
+    <span asp-validation-for="HtmlBody"></span>
     <span class="hint">@T["HTML message will only be sent if the notification provider supports it. You may use Liquid syntax."]</span>
 </div>
 

src/OrchardCore/OrchardCore.DisplayManagement/Handlers/DisplayDriver.cs

@@ -12,6 +12,8 @@ public abstract class DisplayDriver<TModel, TDisplayContext, TEditorContext, TUp
         where TEditorContext : BuildEditorContext
         where TUpdateContext : UpdateEditorContext
     {
+        protected static readonly string ModelName = typeof(TModel).Name;
+
         /// <summary>
         /// Returns <c>true</c> if the model can be handle by the current driver.
         /// </summary>
@@ -116,11 +118,11 @@ protected virtual void BuildPrefix(TModel model, string htmlFieldPrefix)
         {
             if (!string.IsNullOrEmpty(htmlFieldPrefix))
             {
-                Prefix = $"{htmlFieldPrefix}.{typeof(TModel).Name}";
+                Prefix = $"{htmlFieldPrefix}.{ModelName}";
             }
             else
             {
-                Prefix = typeof(TModel).Name;
+                Prefix = ModelName;
             }
         }
     }