Add a CSV export functionality in admin and add price fields (#41)

* Implement an action do download data in csv
* Refactor CSV download
* Move price to main models and add csv to bookshelf
* Update template and API
* Small refactoring

ram/bookshelf/admin.py

@@ -1,6 +1,12 @@
+import html
+
+from django.conf import settings
 from django.contrib import admin
+from django.utils.html import strip_tags
 from adminsortable2.admin import SortableAdminBase, SortableInlineAdminMixin
 
+from ram.utils import generate_csv
+from portal.utils import get_site_conf
 from bookshelf.models import (
     BaseBookProperty,
     BaseBookImage,
@@ -71,9 +77,25 @@ class BookAdmin(SortableAdminBase, admin.ModelAdmin):
                     "number_of_pages",
                     "publication_year",
                     "description",
+                    "tags",
+                )
+            },
+        ),
+        (
+            "Purchase data",
+            {
+                "fields": (
                     "purchase_date",
+                    "price",
+                )
+            },
+        ),
+        (
+            "Notes",
+            {
+                "classes": ("collapse",),
+                "fields": (
                     "notes",
-                    "tags",
                 )
             },
         ),
@@ -89,13 +111,66 @@ class BookAdmin(SortableAdminBase, admin.ModelAdmin):
         ),
     )
 
+    def get_form(self, request, obj=None, **kwargs):
+        form = super().get_form(request, obj, **kwargs)
+        form.base_fields["price"].label = "Price ({})".format(
+            get_site_conf().currency
+        )
+        return form
+
     @admin.display(description="Publisher")
     def get_publisher(self, obj):
         return obj.publisher.name
 
     @admin.display(description="Authors")
     def get_authors(self, obj):
-        return ", ".join(a.short_name() for a in obj.authors.all())
+        return obj.authors_list
+
+    def download_csv(modeladmin, request, queryset):
+        header = [
+            "Title",
+            "Authors",
+            "Publisher",
+            "ISBN",
+            "Language",
+            "Number of Pages",
+            "Publication Year",
+            "Description",
+            "Tags",
+            "Purchase Date",
+            "Price ({})".format(get_site_conf().currency),
+            "Notes",
+            "Properties",
+        ]
+
+        data = []
+        for obj in queryset:
+            properties = settings.CSV_SEPARATOR_ALT.join(
+                "{}:{}".format(property.property.name, property.value)
+                for property in obj.property.all()
+            )
+            data.append([
+                obj.title,
+                obj.authors_list.replace(",", settings.CSV_SEPARATOR_ALT),
+                obj.publisher.name,
+                obj.ISBN,
+                dict(settings.LANGUAGES)[obj.language],
+                obj.number_of_pages,
+                obj.publication_year,
+                html.unescape(strip_tags(obj.description)),
+                settings.CSV_SEPARATOR_ALT.join(
+                    t.name for t in obj.tags.all()
+                ),
+                obj.purchase_date,
+                obj.price,
+                html.unescape(strip_tags(obj.notes)),
+                properties,
+            ])
+
+        return generate_csv(header, data, "bookshelf_books.csv")
+
+    download_csv.short_description = "Download selected items as CSV"
+    actions = [download_csv]
 
 
 @admin.register(Author)
@@ -146,9 +221,25 @@ class CatalogAdmin(SortableAdminBase, admin.ModelAdmin):
                     "number_of_pages",
                     "publication_year",
                     "description",
+                    "tags",
+                )
+            },
+        ),
+        (
+            "Purchase data",
+            {
+                "fields": (
                     "purchase_date",
+                    "price",
+                )
+            },
+        ),
+        (
+            "Notes",
+            {
+                "classes": ("collapse",),
+                "fields": (
                     "notes",
-                    "tags",
                 )
             },
         ),
@@ -164,6 +255,61 @@ class CatalogAdmin(SortableAdminBase, admin.ModelAdmin):
         ),
     )
 
+    def get_form(self, request, obj=None, **kwargs):
+        form = super().get_form(request, obj, **kwargs)
+        form.base_fields["price"].label = "Price ({})".format(
+            get_site_conf().currency
+        )
+        return form
+
     @admin.display(description="Scales")
     def get_scales(self, obj):
         return "/".join(s.scale for s in obj.scales.all())
+
+    def download_csv(modeladmin, request, queryset):
+        header = [
+            "Catalog",
+            "Manufacturer",
+            "Years",
+            "Scales",
+            "ISBN",
+            "Language",
+            "Number of Pages",
+            "Publication Year",
+            "Description",
+            "Tags",
+            "Purchase Date",
+            "Price ({})".format(get_site_conf().currency),
+            "Notes",
+            "Properties",
+        ]
+
+        data = []
+        for obj in queryset:
+            properties = settings.CSV_SEPARATOR_ALT.join(
+                "{}:{}".format(property.property.name, property.value)
+                for property in obj.property.all()
+            )
+            data.append([
+                obj.__str__,
+                obj.manufacturer.name,
+                obj.years,
+                obj.get_scales,
+                obj.ISBN,
+                dict(settings.LANGUAGES)[obj.language],
+                obj.number_of_pages,
+                obj.publication_year,
+                html.unescape(strip_tags(obj.description)),
+                settings.CSV_SEPARATOR_ALT.join(
+                    t.name for t in obj.tags.all()
+                ),
+                obj.purchase_date,
+                obj.price,
+                html.unescape(strip_tags(obj.notes)),
+                properties,
+            ])
+
+        return generate_csv(header, data, "bookshelf_catalogs.csv")
+
+    download_csv.short_description = "Download selected items as CSV"
+    actions = [download_csv]

ram/bookshelf/migrations/0019_basebook_price.py

@@ -0,0 +1,36 @@
+# Generated by Django 5.1.4 on 2024-12-29 17:06
+
+from django.db import migrations, models
+
+
+def price_to_property(apps, schema_editor):
+    basebook = apps.get_model("bookshelf", "BaseBook")
+    for row in basebook.objects.all():
+        prop = row.property.filter(property__name__icontains="price")
+        for p in prop:
+            try:
+                row.price = float(p.value)
+            except ValueError:
+                pass
+        row.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("bookshelf", "0018_alter_basebookdocument_options"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="basebook",
+            name="price",
+            field=models.DecimalField(
+                blank=True, decimal_places=2, max_digits=10, null=True
+            ),
+        ),
+        migrations.RunPython(
+            price_to_property,
+            reverse_code=migrations.RunPython.noop
+        ),
+    ]

ram/bookshelf/models.py

@@ -49,6 +49,12 @@ class BaseBook(BaseModel):
     number_of_pages = models.SmallIntegerField(null=True, blank=True)
     publication_year = models.SmallIntegerField(null=True, blank=True)
     description = tinymce.HTMLField(blank=True)
+    price = models.DecimalField(
+        max_digits=10,
+        decimal_places=2,
+        null=True,
+        blank=True,
+    )
     purchase_date = models.DateField(null=True, blank=True)
     tags = models.ManyToManyField(
         Tag, related_name="bookshelf", blank=True
@@ -114,9 +120,14 @@ class Meta:
     def __str__(self):
         return self.title
 
+    @property
     def publisher_name(self):
         return self.publisher.name
 
+    @property
+    def authors_list(self):
+        return ", ".join(a.short_name() for a in self.authors.all())
+
     def get_absolute_url(self):
         return reverse(
             "bookshelf_item",

ram/bookshelf/serializers.py

@@ -1,6 +1,10 @@
 from rest_framework import serializers
-from bookshelf.models import Book, Author, Publisher
-from metadata.serializers import TagSerializer
+from bookshelf.models import Book, Catalog, Author, Publisher
+from metadata.serializers import (
+    ScaleSerializer,
+    ManufacturerSerializer,
+    TagSerializer
+)
 
 
 class AuthorSerializer(serializers.ModelSerializer):
@@ -22,5 +26,16 @@ class BookSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = Book
-        fields = "__all__"
+        exclude = ("price",)
+        read_only_fields = ("creation_time", "updated_time")
+
+
+class CatalogSerializer(serializers.ModelSerializer):
+    scales = ScaleSerializer(many=True)
+    manufacturer = ManufacturerSerializer()
+    tags = TagSerializer(many=True)
+
+    class Meta:
+        model = Catalog
+        exclude = ("price",)
         read_only_fields = ("creation_time", "updated_time")

ram/bookshelf/urls.py

@@ -1,7 +1,9 @@
 from django.urls import path
-from bookshelf.views import BookList, BookGet
+from bookshelf.views import BookList, BookGet, CatalogList, CatalogGet
 
 urlpatterns = [
     path("book/list", BookList.as_view()),
     path("book/get/<uuid:uuid>", BookGet.as_view()),
+    path("catalog/list", CatalogList.as_view()),
+    path("catalog/get/<uuid:uuid>", CatalogGet.as_view()),
 ]

ram/bookshelf/views.py

@@ -1,8 +1,8 @@
 from rest_framework.generics import ListAPIView, RetrieveAPIView
 from rest_framework.schemas.openapi import AutoSchema
 
-from bookshelf.models import Book
-from bookshelf.serializers import BookSerializer
+from bookshelf.models import Book, Catalog
+from bookshelf.serializers import BookSerializer, CatalogSerializer
 
 
 class BookList(ListAPIView):
@@ -19,3 +19,19 @@ class BookGet(RetrieveAPIView):
 
     def get_queryset(self):
         return Book.objects.get_published(self.request.user)
+
+
+class CatalogList(ListAPIView):
+    serializer_class = CatalogSerializer
+
+    def get_queryset(self):
+        return Catalog.objects.get_published(self.request.user)
+
+
+class CatalogGet(RetrieveAPIView):
+    serializer_class = CatalogSerializer
+    lookup_field = "uuid"
+    schema = AutoSchema(operation_id_base="retrieveCatalogByUUID")
+
+    def get_queryset(self):
+        return Book.objects.get_published(self.request.user)

ram/portal/admin.py

@@ -17,6 +17,7 @@ class SiteConfigurationAdmin(SingletonModelAdmin):
                     "about",
                     "items_per_page",
                     "items_ordering",
+                    "currency",
                     "footer",
                     "footer_extended",
                 )

ram/portal/migrations/0018_siteconfiguration_currency.py

@@ -0,0 +1,21 @@
+# Generated by Django 5.1.4 on 2024-12-29 15:18
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        (
+            "portal",
+            "0017_alter_flatpage_content_alter_siteconfiguration_about_and_more",
+        ),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="siteconfiguration",
+            name="currency",
+            field=models.CharField(default="EUR", max_length=3),
+        ),
+    ]

ram/portal/models.py

@@ -30,6 +30,7 @@ class SiteConfiguration(SingletonModel):
         ],
         default="type",
     )
+    currency = models.CharField(max_length=3, default="EUR")
     footer = tinymce.HTMLField(blank=True)
     footer_extended = tinymce.HTMLField(blank=True)
     show_version = models.BooleanField(default=True)

ram/portal/templates/bookshelf/book.html

@@ -113,6 +113,12 @@
                         <th scope="row">Purchase date</th>
                         <td>{{ book.purchase_date|default:"-" }}</td>
                       </tr>
+                      {% if request.user.is_staff %}
+                      <tr>
+                        <th scope="row">Price ({{ site_conf.currency }})</th>
+                        <td>{{ book.price|default:"-" }}</td>
+                      </tr>
+                      {% endif %}
                     </tbody>
                   </table>
                   {% if properties %}

ram/portal/templates/rollingstock.html

@@ -187,6 +187,12 @@
                         <th scope="row">Purchase date</th>
                         <td>{{ rolling_stock.purchase_date|default:"-" }}</td>
                       </tr>
+                      {% if request.user.is_staff %}
+                      <tr>
+                        <th scope="row">Price ({{ site_conf.currency }})</th>
+                        <td>{{ rolling_stock.price|default:"-" }}</td>
+                      </tr>
+                      {% endif %}
                     </tbody>
                   </table>
                   {% if properties %}