Bearbeitung von Fragen

MultipleChoiceTrainer.sln

@@ -3,7 +3,7 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 16
 VisualStudioVersion = 16.0.30128.74
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MultipleChoiceTrainer", "MultipleChoiceTrainer\MultipleChoiceTrainer.csproj", "{5B8B8E79-0139-4A22-A789-F9A4EBD703BA}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MultipleChoiceTrainer", "MultipleChoiceTrainer\MultipleChoiceTrainer.csproj", "{5B8B8E79-0139-4A22-A789-F9A4EBD703BA}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

MultipleChoiceTrainer/Controllers/QuestionsController.cs

@@ -19,6 +19,12 @@ namespace MultipleChoiceTrainer.Controllers
             _context = context;
         }
 
+        public IActionResult List(int sectionId)
+        {
+            return View(_context.Questions.Include(e => e.Choices).Where(e => e.SectionId == sectionId));
+        }
+
+
         // GET: Questions/Create
         public IActionResult Create(int sectionId)
         {
@@ -35,6 +41,8 @@ namespace MultipleChoiceTrainer.Controllers
         {
             if (ModelState.IsValid)
             {
+                question.Choices = question.Choices.ToList().Where(e => !string.IsNullOrEmpty(e.Text) && !string.IsNullOrWhiteSpace(e.Text)).ToList();
+
                 _context.Add(question);
                 await _context.SaveChangesAsync();
                 var section = _context.Sections.FirstOrDefault(s => s.Id == question.SectionId);
@@ -52,7 +60,7 @@ namespace MultipleChoiceTrainer.Controllers
                 return NotFound();
             }
 
-            var question = await _context.Questions.FindAsync(id);
+            var question = _context.Questions.Include(e => e.Choices).FirstOrDefault(e => e.Id == id);
             if (question == null)
             {
                 return NotFound();
@@ -66,7 +74,7 @@ namespace MultipleChoiceTrainer.Controllers
         // more details, see http://go.microsoft.com/fwlink/?LinkId=317598.
         [HttpPost]
         [ValidateAntiForgeryToken]
-        public async Task<IActionResult> Edit(int id, [Bind("Id,Text,SectionId")] Question question)
+        public async Task<IActionResult> Edit(int id, Question question)
         {
             if (id != question.Id)
             {
@@ -75,10 +83,21 @@ namespace MultipleChoiceTrainer.Controllers
 
             if (ModelState.IsValid)
             {
+                var deletedChoices = question.Choices.Where(e => (string.IsNullOrEmpty(e.Text) || string.IsNullOrWhiteSpace(e.Text)) && e.Id != 0).Select(e => e.Id).ToList();
+
+                question.Choices = question.Choices.ToList().Where(e => !string.IsNullOrEmpty(e.Text) && !string.IsNullOrWhiteSpace(e.Text)).ToList();
+
                 try
                 {
                     _context.Update(question);
                     await _context.SaveChangesAsync();
+
+                    if(deletedChoices.Any())
+                    {
+                        var q = _context.Questions.Include(e => e.Choices).First(e => e.Id == id);
+                        q.Choices.RemoveAll(e => deletedChoices.Contains(e.Id));
+                        await _context.SaveChangesAsync();
+                    }
                 }
                 catch (DbUpdateConcurrencyException)
                 {
@@ -91,7 +110,7 @@ namespace MultipleChoiceTrainer.Controllers
                         throw;
                     }
                 }
-                return RedirectToAction(nameof(Index), "Home", new { categoryId = question.Section.CategoryId });
+                return RedirectToAction(nameof(List), new { sectionId = question.SectionId });
             }
             ViewData["Section"] = _context.Sections.Include(e => e.Category).FirstOrDefault(s => s.Id == question.SectionId);
             return View(question);

MultipleChoiceTrainer/Models/DataModels/Category.cs

@@ -1,4 +1,5 @@
-using System;
+using MultipleChoiceTrainer.Validation;
+using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
@@ -11,6 +12,7 @@ namespace MultipleChoiceTrainer.Models.DataModels
         public int Id { get; set;  }
 
         [Display(Name="Name")]
+        [NotNullOrEmpty]
         public string Name { get; set; }
         [Display(Name = "Beschreibung")]
         public string Description { get; set; }

MultipleChoiceTrainer/Models/DataModels/Question.cs

@@ -1,6 +1,8 @@
-using System;
+using MultipleChoiceTrainer.Validation;
+using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Threading.Tasks;
 
@@ -10,12 +12,14 @@ namespace MultipleChoiceTrainer.Models.DataModels
     {
         public int Id { get; set; }
         [Display(Name="Frage")]
+        [NotNullOrEmpty]
         public string Text { get; set; }
 
         public Section Section { get; set; }
         public int SectionId { get; set; }
 
         [Display(Name = "Antwortmöglichkeiten")]
+        [NotEmptyChoiceCollection()]
         public List<Choice> Choices { get; set; }
 
         public ICollection<Answer> Answers { get; set; } = new HashSet<Answer>();

MultipleChoiceTrainer/Models/DataModels/Section.cs

@@ -1,4 +1,5 @@
-using System;
+using MultipleChoiceTrainer.Validation;
+using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
@@ -11,6 +12,7 @@ namespace MultipleChoiceTrainer.Models.DataModels
         public int Id { get; set; }
 
         [Display(Name = "Name")]
+        [NotNullOrEmpty]
         public string Name { get; set; }
         [Display(Name = "Beschreibung")]
         public string Description { get; set; }

MultipleChoiceTrainer/Validation/NotEmptyChoiceCollectionAttribute.cs

@@ -0,0 +1,43 @@
+using MultipleChoiceTrainer.Models.DataModels;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace MultipleChoiceTrainer.Validation
+{
+    public class NotEmptyChoiceCollectionAttribute : ValidationAttribute
+    { 
+        public NotEmptyChoiceCollectionAttribute()
+        {
+
+        }
+
+
+        public override bool IsValid(object value)
+        {
+            ErrorMessage = "Es müssen mindestens zwei Antwortmöglichkeiten eingegeben werden!";
+
+            if (value == null || !(value is ICollection<Choice> collection))
+            {
+                return false;
+            }
+
+            if(collection == null || collection.Where(e => !string.IsNullOrEmpty(e.Text)).Count() < 2)
+            {
+                return false;
+            }
+
+            if(!collection.Where(e => !string.IsNullOrEmpty(e.Text)).Any(e => e.IsTrue))
+            {
+                ErrorMessage = "Es muss mindestens eine richtige Antwort eingegeben werden!";
+                return false;
+            }
+
+            return true;
+        }
+
+    }
+}

MultipleChoiceTrainer/Validation/NotNullOrEmptyAttribute.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace MultipleChoiceTrainer.Validation
+{
+    public class NotNullOrEmptyAttribute : ValidationAttribute
+    {
+        public NotNullOrEmptyAttribute()
+        {
+        }
+
+        protected override ValidationResult IsValid(object value, ValidationContext validationContext)
+        {
+            if (value == null)
+                return new ValidationResult($"{validationContext.DisplayName} darf nicht leer sein!");
+
+            if (string.IsNullOrEmpty(value.ToString()) || string.IsNullOrWhiteSpace(value.ToString()))
+            {
+                return new ValidationResult($"{validationContext.DisplayName} darf nicht leer sein!");
+            }
+
+            return ValidationResult.Success;
+        }
+    }
+}

MultipleChoiceTrainer/Views/Home/_homeLogInPartial.cshtml

@@ -29,7 +29,7 @@
                             <ul class="list-group-item list-group-item-action">
                                 <div class="d-flex w-100 justify-content-between">
                                     <h5 class="mb-1">@sub.Name <small class="text-muted">@sub.Description</small></h5>
-                                    <small>@sub.Questions.Count() Fragen</small>
+                                    <small><a asp-action="list" asp-controller="questions" asp-route-sectionId="@sub.Id" class="text-decoration-none text-black-50">@sub.Questions.Count() Fragen</a></small>
                                 </div>
                                 <p class="text-black-50">
                                     <a asp-action="edit" asp-controller="Sections" asp-route-id="@sub.Id" class="text-black-50"><i class="far fa-edit"></i> Lektion bearbeiten</a> &nbsp;&nbsp;&nbsp;

MultipleChoiceTrainer/Views/Questions/Create.cshtml

@@ -12,33 +12,37 @@
         <form asp-action="Create">
             <div asp-validation-summary="ModelOnly" class="text-danger"></div>
             <input type="hidden" asp-for="SectionId" value="@ViewBag.Section.Id" />
-            <div class="form-group">
+            <div class="form-group row">
-                <label asp-for="Text" class="control-label"></label>
+                <label asp-for="Text" class="control-label col-2"></label>
-                <input asp-for="Text" class="form-control" />
+                <input asp-for="Text" class="form-control col-10" />
-                <span asp-validation-for="Text" class="text-danger"></span>
+                <span asp-validation-for="Text" class="text-danger offset-2"></span>
             </div>
-            <div class="form-group">
+            <div class="form-group row">
-                <label asp-for="Choices" class="control-label"></label>
+                <label asp-for="Choices" class="control-label col-2"></label>
-                @if (Model != null && Model.Choices != null)
+                <div class="col-10 row">
-                {
+                    @for (int i = 0; i < 5; i++)
-                    @for (int i = 0; i < Model.Choices.Count; i++)
                     {
-                        <div class="text-center">
+                    <div class="row col-12 mb-1 px-0 mx-0">
-                            <input asp-for="@Model.Choices[i].Text" class="form-control"  />
+                        @if (Model != null && Model.Choices != null && Model.Choices.Count > i)
-                            <input asp-for="@Model.Choices[i].IsTrue" class="form-control" />
+                        {
-                        </div>
+                            <input asp-for="@Model.Choices[i].Text" class="form-control col-10" />
+                            <div class="form-check col-2 text-right">
+                                <input asp-for="@Model.Choices[i].IsTrue" class="form-check-input" value="true" />
+                                <label asp-for="@Model.Choices[i].IsTrue" class="form-check-label">Richtig</label>
+                            </div>
+                        }
+                        else
+                        {
+                            <input type="text" name="Choices[@i].Text" class="form-control col-10" />
+                            <div class="form-check col-2 text-right">
+                                <input type="checkbox" name="Choices[@i].IsTrue" id="CheckBox-IsTrue-@i" class="form-check-input" value="true" />
+                                <label for="CheckBox-IsTrue-@i" class="form-check-label">Richtig</label>
+                            </div>
+                        }
+                    </div>
                     }
-                }
+                    <span asp-validation-for="Choices" class="text-danger" ></span>
-                else
+                </div>
-                {
-                    <input type="hidden" name="Choices.Index" value="10" />
-                    <input type="text" name="Choices[10].Text" class="form-control" />
-                    <input type="checkbox" name="Choices[10].IsTrue" class="form-control"  value="true"   />
-
-                    <input type="hidden" name="Choices.Index" value="11" />
-                    <input type="text" name="Choices[11].Text" class="form-control" />
-                    <input type="checkbox" name="Choices[11].IsTrue" class="form-control"  value="true"   />
-                }
             </div>
             <div class="form-group">
                 <button type="submit" class="btn btn-outline-primary"><i class="fas fa-save"></i> Speichern</button>

MultipleChoiceTrainer/Views/Questions/Edit.cshtml

@@ -13,9 +13,41 @@
             <div asp-validation-summary="ModelOnly" class="text-danger"></div>
             <input type="hidden" asp-for="Id" />
             <input type="hidden" asp-for="SectionId" />
-            <div class="form-group">
+
-                <label asp-for="Text" class="control-label"></label>
+            <div class="form-group row">
+                <label asp-for="Text" class="control-label col-2"></label>
+                <input asp-for="Text" class="form-control col-10" />
+                <span asp-validation-for="Text" class="text-danger offset-2"></span>
             </div>
+            <div class="form-group row">
+                <label asp-for="Choices" class="control-label col-2"></label>
+                <div class="col-10 row">
+                    @for (int i = 0; i < 5; i++)
+                    {
+                    <div class="row col-12 mb-1 px-0 mx-0">
+                        @if (Model != null && Model.Choices != null && Model.Choices.Count > i)
+                        {
+                            <input asp-for="@Model.Choices[i].Id" type="hidden" />
+                            <input asp-for="@Model.Choices[i].Text" class="form-control col-10" />
+                            <div class="form-check col-2 text-right">
+                                <input asp-for="@Model.Choices[i].IsTrue" class="form-check-input" value="true" />
+                                <label asp-for="@Model.Choices[i].IsTrue" class="form-check-label">Richtig</label>
+                            </div>
+                        }
+                        else
+                        {
+                            <input type="text" name="Choices[@i].Text" class="form-control col-10" />
+                            <div class="form-check col-2 text-right">
+                                <input type="checkbox" name="Choices[@i].IsTrue" id="CheckBox-IsTrue-@i" class="form-check-input" value="true" />
+                                <label for="CheckBox-IsTrue-@i" class="form-check-label">Richtig</label>
+                            </div>
+                        }
+                    </div>
+                    }
+                    <span asp-validation-for="Choices" class="text-danger" ></span>
+                </div>
+            </div>
+
             <div class="form-group">
                 <button type="submit" class="btn btn-outline-primary"><i class="fas fa-save"></i> Speichern</button>
                 <a asp-action="Index" asp-controller="Home" asp-route-categoryId="@ViewBag.Section.CategoryId" class="btn btn-outline-danger"><i class="fas fa-times"></i> Abbrechen</a>

MultipleChoiceTrainer/Views/Questions/List.cshtml

@@ -0,0 +1,37 @@
+@model IEnumerable<MultipleChoiceTrainer.Models.DataModels.Question>
+@{
+    ViewData["Title"] = "Fragen";
+}
+
+<table class="table table-hover">
+    <thead>
+        <tr>
+            <th>
+                @Html.DisplayNameFor(model => model.Text)
+            </th>
+            <th>
+                @Html.DisplayNameFor(model => model.Choices)
+            </th>
+            <th></th>
+        </tr>
+    </thead>
+    <tbody>
+@foreach (var item in Model) {
+        <tr>
+            <td>
+                @Html.DisplayFor(modelItem => item.Text)
+            </td>
+            <td>
+                @foreach (var choice in item.Choices)
+                {
+                <i class="@if (choice.IsTrue) { <text>fas fa-check text-success</text> } else { <text>fas fa-times text-danger</text> }"></i> @choice.Text<br />
+                }
+            </td>
+            <td>
+                <a asp-action="Edit" asp-route-id="@item.Id"><i class="fas fa-edit"></i> Bearbeiten</a>
+            </td>
+        </tr>
+
+}
+    </tbody>
+</table>