Add properties

dcc/metadata/admin.py

@@ -1,5 +1,6 @@
 from django.contrib import admin
 from metadata.models import (
+    Property,
     Decoder,
     Scale,
     Manufacturer,
@@ -9,6 +10,11 @@ from metadata.models import (
 )
 
 
+@admin.register(Property)
+class PropertyAdmin(admin.ModelAdmin):
+    search_fields = ("name",)
+
+
 @admin.register(Decoder)
 class DecoderAdmin(admin.ModelAdmin):
     readonly_fields = ("image_thumbnail",)

dcc/metadata/migrations/0008_property_alter_manufacturer_options_and_more.py

@@ -0,0 +1,33 @@
+# Generated by Django 4.0.3 on 2022-04-07 09:03
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('metadata', '0007_alter_manufacturer_category'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Property',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=128, unique=True)),
+            ],
+            options={
+                'verbose_name_plural': 'Properties',
+                'ordering': ['name'],
+            },
+        ),
+        migrations.AlterModelOptions(
+            name='manufacturer',
+            options={'ordering': ['category', 'name']},
+        ),
+        migrations.AlterField(
+            model_name='manufacturer',
+            name='category',
+            field=models.CharField(choices=[('model', 'Model'), ('real', 'Real')], max_length=64),
+        ),
+    ]

dcc/metadata/models.py

@@ -6,6 +6,17 @@ from django_countries.fields import CountryField
 from dcc.utils import get_image_preview, slugify
 
 
+class Property(models.Model):
+    name = models.CharField(max_length=128, unique=True)
+
+    class Meta:
+        verbose_name_plural = "Properties"
+        ordering = ["name"]
+
+    def __str__(self):
+        return self.name
+
+
 class Manufacturer(models.Model):
     name = models.CharField(max_length=128, unique=True)
     category = models.CharField(

dcc/roster/admin.py

@@ -1,14 +1,22 @@
 from django.contrib import admin
 from roster.models import (
     RollingClass,
+    RollingClassProperty,
     RollingStock,
     RollingStockImage,
     RollingStockDocument,
 )
 
 
+class RollingClassPropertyInline(admin.TabularInline):
+    model = RollingClassProperty
+    min_num = 0
+    extra = 0
+
+
 @admin.register(RollingClass)
 class RollingClass(admin.ModelAdmin):
+    inlines = (RollingClassPropertyInline,)
     list_display = ("__str__", "type", "company")
     list_filter = ("company", "type__category", "type")
     search_fields = list_display

dcc/roster/migrations/0008_rollingclassproperty.py

@@ -0,0 +1,24 @@
+# Generated by Django 4.0.3 on 2022-04-07 09:03
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('metadata', '0008_property_alter_manufacturer_options_and_more'),
+        ('roster', '0007_alter_rollingclass_wheel_arrangement'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='RollingClassProperty',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('value', models.CharField(max_length=256)),
+                ('property', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='metadata.property')),
+                ('rolling_class', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='roster.rollingclass', verbose_name='Class')),
+            ],
+        ),
+    ]

dcc/roster/migrations/0009_remove_rollingclass_wheel_arrangement.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.0.3 on 2022-04-07 09:05
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('roster', '0008_rollingclassproperty'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='rollingclass',
+            name='wheel_arrangement',
+        ),
+    ]

dcc/roster/models.py

@@ -1,13 +1,13 @@
 import os
 from uuid import uuid4
 from django.db import models
-from django.urls import reverse
 
 # from django.core.files.storage import FileSystemStorage
 # from django.dispatch import receiver
 
 from dcc.utils import get_image_preview
 from metadata.models import (
+    Property,
     Scale,
     Manufacturer,
     Decoder,
@@ -27,15 +27,14 @@ class RollingClass(models.Model):
     type = models.ForeignKey(
         RollingStockType, on_delete=models.CASCADE, null=True, blank=True
     )
+    company = models.ForeignKey(
+        Company, on_delete=models.CASCADE, null=True, blank=True
+    )
     description = models.CharField(max_length=256, blank=True)
-    wheel_arrangement = models.CharField(max_length=64, blank=True)
     manufacturer = models.ForeignKey(
         Manufacturer, on_delete=models.CASCADE, null=True, blank=True,
         limit_choices_to={"category": "real"}
     )
-    company = models.ForeignKey(
-        Company, on_delete=models.CASCADE, null=True, blank=True
-    )
 
     class Meta:
         ordering = ["company", "identifier"]
@@ -46,6 +45,21 @@ class RollingClass(models.Model):
         return "{0} {1}".format(self.company, self.identifier)
 
 
+class RollingClassProperty(models.Model):
+    rolling_class = models.ForeignKey(
+        RollingClass,
+        on_delete=models.CASCADE,
+        null=False,
+        blank=False,
+        verbose_name="Class",
+    )
+    property = models.ForeignKey(Property, on_delete=models.CASCADE)
+    value = models.CharField(max_length=256)
+
+    def __str__(self):
+        return self.property.name
+
+
 class RollingStock(models.Model):
     uuid = models.UUIDField(primary_key=True, default=uuid4, editable=False)
     rolling_class = models.ForeignKey(