#3 Displaying Models on Admin page

commit e08aecabb4db848b495f86c6095fd0ee1edc05be
Author: reverend <reverend@reverend2048.de>
Date:   Sun Dec 18 09:15:25 2022 +0100

.gitignore

@@ -0,0 +1 @@
+django_web_galleries/media/*

Pipfile

@@ -5,6 +5,8 @@ name = "pypi"
 
 [packages]
 django = "*"
+django-responsive-images = "*"
+pillow = "*"
 
 [dev-packages]
 

django_web_galleries/django_web_galleries/settings.py

@@ -37,6 +37,8 @@ INSTALLED_APPS = [
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'responsive_images',
+    'web_galleries',
 ]
 
 MIDDLEWARE = [
@@ -115,9 +117,13 @@ USE_TZ = True
 # Static files (CSS, JavaScript, Images)
 # https://docs.djangoproject.com/en/4.1/howto/static-files/
 
+STATIC_ROOT = BASE_DIR / 'static'
 STATIC_URL = 'static/'
 
 # Default primary key field type
 # https://docs.djangoproject.com/en/4.1/ref/settings/#default-auto-field
 
 DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+
+MEDIA_ROOT = BASE_DIR / 'media'
+MEDIA_URL = 'media/'

django_web_galleries/django_web_galleries/urls.py

@@ -14,8 +14,9 @@ Including another URLconf
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
 from django.contrib import admin
-from django.urls import path
+from django.urls import path, include
 
 urlpatterns = [
     path('admin/', admin.site.urls),
+    path('', include('web_galleries.urls'))
 ]

django_web_galleries/web_galleries/admin.py

@@ -1,3 +1,11 @@
 from django.contrib import admin
 
-# Register your models here.
+from .models import (
+    Image,
+    Visitor,
+    Gallery
+)
+
+admin.site.register(Image)
+admin.site.register(Visitor)
+admin.site.register(Gallery)

django_web_galleries/web_galleries/forms.py

@@ -0,0 +1,9 @@
+from django import forms
+from django.utils.translation import gettext as _
+
+from .models import Image
+
+class ImageUploadForm(forms.ModelForm):
+    class Meta:
+        model = Image
+        fields = ['description', 'image_file', 'private']

django_web_galleries/web_galleries/migrations/0001_initial.py

@@ -0,0 +1,55 @@
+# Generated by Django 4.1.4 on 2022-12-18 08:19
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Gallery',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=100, null=True, verbose_name='Optional title for this gallery')),
+                ('private', models.BooleanField(blank=True, default=False, verbose_name='Wether the gallery is vsibile publicly or to certain users only')),
+                ('access_code', models.CharField(max_length=32, null=True, verbose_name='Code to access private galleries')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Visitor',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('session_id', models.CharField(max_length=50, verbose_name='A cookie set by this application to identify a visitor by session')),
+                ('name', models.CharField(default=None, max_length=50, null=True, unique=True, verbose_name='Human readable, self assigned name of the visitor')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Image',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('description', models.TextField(null=True, verbose_name='An optional description of the Image')),
+                ('image_file', models.ImageField(upload_to='web_galleries/uploads/', verbose_name='File of the image')),
+                ('private', models.BooleanField(blank=True, default=False, verbose_name='Wether this image is visible publicly or to certain users only')),
+                ('access_code', models.CharField(max_length=32, null=True, verbose_name='Code to access private images')),
+                ('uploaded_when', models.DateTimeField(auto_now_add=True, verbose_name='When this picture was uploaded')),
+                ('galleries', models.ManyToManyField(related_name='images', to='web_galleries.gallery', verbose_name='What galleries this image is in')),
+                ('uploaded_by', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='uploaded_images', to='web_galleries.visitor', verbose_name='Which visitor uploaded this picture')),
+            ],
+        ),
+        migrations.AddField(
+            model_name='gallery',
+            name='created_by',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='created_galleries', to='web_galleries.visitor', verbose_name='Visitor who created the gallery'),
+        ),
+        migrations.AddField(
+            model_name='gallery',
+            name='visitors',
+            field=models.ManyToManyField(related_name='linked_galleries', to='web_galleries.visitor', verbose_name='Visitors that a part of this gallery'),
+        ),
+    ]

django_web_galleries/web_galleries/models.py

@@ -1,3 +1,107 @@
 from django.db import models
+from django.core.exceptions import ValidationError
+from django.utils.translation import gettext as _
+
+class Visitor(models.Model):
+    """
+    Stores information about a visitor of this application.
+    No personal information is gathered, the name is optional and can be anything.
+    The name has to be unique, tho.
+    """
+    session_id = models.CharField(
+        _('A cookie set by this application to identify a visitor by session'),
+        max_length=50
+    )
+    name = models.CharField(
+        _('Human readable, self assigned name of the visitor'),
+        null=True,
+        default=None,
+        max_length=50,
+        unique=True
+    )
+
+
+class Gallery(models.Model):
+    """
+    A gallery is a collection of multiple images.
+    It must be 
+    """
+    title = models.CharField(
+        _('Optional title for this gallery'),
+        null=True,
+        max_length=100
+    )
+    private = models.BooleanField(
+        _('Wether the gallery is vsibile publicly or to certain users only'),
+        default=False,
+        blank=True
+    )
+    access_code = models.CharField(
+        _('Code to access private galleries'),
+        null=True,
+        max_length=32
+    )
+
+    created_by = models.ForeignKey(
+        Visitor,
+        verbose_name=_('Visitor who created the gallery'),
+        related_name='created_galleries',
+        on_delete=models.CASCADE
+    )
+        
+    visitors = models.ManyToManyField(
+        Visitor,
+        verbose_name=_('Visitors that a part of this gallery'),
+        related_name='linked_galleries'
+    )
+
+    def clean(self):
+        if self.private and access_code is None:
+            raise ValidationErrorr('Private gallery needs an access code')
+        if len(self.visitors.all()) > 10:
+            raise ValidationError('Gallery can not have more than 10 visitors assigned')
+
+
+class Image(models.Model):
+    """
+    An image contains the path to the image file and several information
+    like description, uploader and affiliation to galleries.
+    """
+    description = models.TextField(
+        _('An optional description of the Image'),
+        null=True
+    )
+    image_file = models.ImageField(
+        _('File of the image'),
+        upload_to='web_galleries/uploads/'
+    )
+
+    private = models.BooleanField(
+        _('Wether this image is visible publicly or to certain users only'),
+        default=False,
+        blank=True
+    )
+    access_code = models.CharField(
+        _('Code to access private images'),
+        null=True,
+        max_length=32
+    )
+
+    uploaded_by = models.ForeignKey(
+        Visitor,
+        verbose_name=_('Which visitor uploaded this picture'),
+        null=True,
+        related_name='uploaded_images',
+        on_delete=models.SET_NULL
+    )
+    uploaded_when = models.DateTimeField(
+        _('When this picture was uploaded'),
+        auto_now_add=True
+    )
+
+    galleries = models.ManyToManyField(
+        Gallery,
+        verbose_name=_('What galleries this image is in'),
+        related_name='images'
+    )
 
-# Create your models here.

django_web_galleries/web_galleries/templates/global.html

@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Web Gallery</title>
+</head>
+<body>
+    <div class="RV-Page">
+        <head class="RV-Head">
+            <nav class="RV-Navigation">
+                <ul class="RV-Navigation__list">
+                    <li class="RV-Navigation__item">
+                        <a href="{% url 'home' %}" class="RV-Navigation__link">
+                            Home
+                        </a>
+                    </li>
+                    <li class="RV-Navigation__item">
+                        <a href="{% url 'upload_image' %}" class="RV-Navigation__link">
+                            Upload image
+                        </a>
+                    </li>
+                    <li class="RV-Navigation__item">
+                        <a href="#" class="RV-Navigation__link">
+                            My galleries
+                        </a>
+                    </li>
+                    <li class="RV-Navigation__item">
+                        <a href="#" class="RV-Navigation__link">
+                            Create gallery
+                        </a>
+                    </li>
+                </ul>
+            </nav>
+        </head>
+        <main class="RV-Content">
+            {% block content %}
+            {% endblock content %}
+        </main>
+        <footer class="RV-Footer">
+            
+        </footer>
+    </div>
+</body>
+</html>

django_web_galleries/web_galleries/templates/list_images/image_list.html

@@ -0,0 +1,13 @@
+{% extends '../global.html' %}
+
+{% load responsive_images %}
+
+{% block content %}
+    <sectoin class="RV-Images">
+        <li class="RV-Images__list">
+            {% for image in images %}
+                <img src="{% src image.image_file 200x200 %}">
+            {% endfor %}
+        </li>
+    </sectoin>
+{% endblock content %}

django_web_galleries/web_galleries/templates/upload_image/upload.html

@@ -0,0 +1,9 @@
+{% extends '../global.html' %}
+
+{% block content %}
+    <form method="POST" enctype="multipart/form-data">
+        {% csrf_token %}
+        {{ form }}
+        <button type="submit">Upload</button>
+    </form>
+{% endblock content %}

django_web_galleries/web_galleries/urls.py

@@ -0,0 +1,19 @@
+from django.urls import path
+from django.conf import settings
+from django.conf.urls.static import static
+
+from .views import (
+    ImageUploadView,
+    PublicImageListView
+)
+
+urlpatterns = [
+    path('', PublicImageListView.as_view(), name='home'),
+    path('upload/', ImageUploadView.as_view(), name='upload_image')
+]
+
+if settings.DEBUG:
+    urlpatterns += static(
+        settings.MEDIA_URL,
+        document_root=settings.MEDIA_ROOT
+    )

django_web_galleries/web_galleries/views.py

@@ -1,3 +1,55 @@
-from django.shortcuts import render
+import secrets
 
-# Create your views here.
+from django.views import View
+from django.views.generic.list import ListView
+from django.shortcuts import render, redirect
+from django.urls import reverse
+
+from .forms import ImageUploadForm
+from .models import Image
+
+class ImageUploadView(View):
+    def get(self, request):
+        form = ImageUploadForm()
+        return render(
+            request,
+            'upload_image/upload.html',
+            {
+                'form': form
+            }
+        )
+
+    def post(self, request):
+        form = ImageUploadForm(
+            request.POST,
+            request.FILES
+        )
+
+        if form.is_valid():
+            image = form.save(commit=False)
+
+            if image.private:
+                image.access_code = secrets.token_hex(32)
+
+            image.save()
+            return redirect(
+                reverse('home')
+            )
+        else:
+            form = ImageUploadForm()
+            return render(
+                request,
+                'upload_image/upload.html',
+                {
+                    'form': form
+                }
+            )
+
+class PublicImageListView(ListView):
+    model = Image
+    paginate_by = 20
+    context_object_name = 'images'
+    template_name = 'list_images/image_list.html'
+
+    def get_queryset(self):
+        return Image.objects.all().filter(private=False)