lesson 47

ap_12/core/urls.py

@@ -23,4 +23,6 @@ urlpatterns = [
     path('', views.index_view, name='index'),
     path('articles/add', views.article_create_view, name='articles_add'),
     path('articles/<int:id>', views.article_detail_view, name='articles_detail'),
+    path('articles/<int:id>/update', views.article_update_view, name='articles_update'),
+    path('articles/<int:id>/delete', views.article_delete_view, name='articles_delete'),
 ]

ap_12/templates/articles/create.html

@@ -4,19 +4,6 @@
     <h1>Create Article</h1>
 
     <form action="{% url 'articles_add' %}" method="post">
-        {% csrf_token %}
-
-        <label>Title:</label><br>
-        <input type="text" name="title">
-        <br>
-
-        <label>Text:</label><br>
-        <textarea name="text"></textarea><br>
-
-        <label>Author:</label><br>
-        <input type="text" name="author"><br>
-        <br>
-
-        <input type="submit" value="Send">
+        {% include 'partial/article_form.html' with btn_text='Create' %}
     </form>
 {% endblock %}
\ No newline at end of file

ap_12/templates/articles/detail.html

@@ -6,4 +6,14 @@
     <h2>{{ article.title }}</h2>
     <p>{{ article.text }}</p>
     <p>By: {{ article.author }}</p>
+
+    <a href="{% url 'articles_update' id=article.id %}" class="btn btn-primary">
+        Update
+    </a>
+
+    <form action="{% url 'articles_delete' id=article.id %}" method="post" onsubmit="return confirm('Delete?')">
+        {% csrf_token %}
+        <button class="btn btn-danger">Delete</button>
+    </form>
+
 {% endblock %}
\ No newline at end of file

ap_12/templates/articles/update.html

+{% extends 'base.html' %}
+
+{% block content %}
+    <h1>Update Article</h1>
+
+    <form action="{% url 'articles_update' id=article.id %}" method="post">
+        {% include 'partial/article_form.html' %}
+    </form>
+{% endblock %}
\ No newline at end of file

ap_12/templates/partial/article_form.html

+{% csrf_token %}
+
+{% for error in form.non_field_errors %}
+    <p class="text-danger">{{ error }}</p>
+{% endfor %}
+
+
+<label>Title:</label><br>
+<input type="text" name="title" value="{{ article.title }}">
+{% for error in form.title.errors %}
+    <p class="text-danger">{{ error }}</p>
+{% endfor %}
+<br>
+
+<label>Text:</label><br>
+<textarea name="text">{{ article.text }}</textarea><br>
+{% for error in form.text.errors %}
+    <p class="text-danger">{{ error }}</p>
+{% endfor %}
+
+<label>Author:</label><br>
+<input type="text" name="author" value="{{ article.author }}"><br>
+{% for error in form.author.errors %}
+    <p class="text-danger">{{ error }}</p>
+{% endfor %}
+<br>
+
+<input type="submit" value="{{ btn_text|default:'Send' }}" class="btn btn-primary">
\ No newline at end of file

ap_12/webapp/forms.py

+from django import forms
+from django.forms import widgets
+
+
+class ArticleForm(forms.Form):
+    title = forms.CharField(max_length=200, required=True, label='Title')
+    author = forms.CharField(max_length=40, required=True, label='Author')
+    text = forms.CharField(
+        max_length=3000, required=True, 
+        label='Text', widget=widgets.Textarea,
+    )

ap_12/webapp/views.py

 from django.shortcuts import render, get_object_or_404, redirect
+from webapp.forms import ArticleForm
 from webapp.models import Article
 
 
+# CRUD - Create Read Update Delete
+
+
 def index_view(request):
     context = {'articles': Article.objects.all()}
 
@@ -16,14 +20,59 @@ def article_detail_view(request, id):
 
 def article_create_view(request):
     if request.method == 'GET':
-        return render(request, 'articles/create.html')
+        form = ArticleForm()
+        return render(request, 'articles/create.html', context={'form': form})
+
     elif request.method == 'POST':
         print(request.POST)
+        form = ArticleForm(data=request.POST)
 
+        if form.is_valid():
             article = Article.objects.create(
                 title=request.POST.get('title'),
                 text=request.POST.get('text'),
                 author=request.POST.get('author'),
             )
-        
             return redirect('articles_detail', id=article.id)
+    
+        else:            
+           return render(
+               request, 'articles/create.html', 
+               context={'form': form},
+            ) 
+
+
+def article_update_view(request, id):
+    article = get_object_or_404(Article, id=id)
+    
+    if request.method == 'GET':
+        form = ArticleForm(initial={
+            'title': article.title,
+            'text': article.text,
+            'author': article.author,
+        })
+
+        return render(
+            request, 'articles/update.html', 
+            context={'article': article, 'form': form},
+        )
+    
+    elif request.method == 'POST':
+        form = ArticleForm(data=request.POST)
+        
+        if form.is_valid():
+            article.title = form.cleaned_data.get('title')
+            article.author = form.cleaned_data.get('author')
+            article.text = form.cleaned_data.get('text')
+            
+            article.save()
+
+            return redirect('index')
+        else:
+            return render(request, 'articles/update.html', context={'form': form, 'article': article})
+
+
+def article_delete_view(request, id):
+    get_object_or_404(Article, id=id).delete()
+    
+    return redirect('index')