Extend functionalities

dcc/metadata/admin.py

@@ -1,5 +1,5 @@
 from django.contrib import admin
-from metadata.models import Decoder, Manufacturer, Company
+from metadata.models import Decoder, Manufacturer, Company, Tag
 
 
 @admin.register(Decoder)
@@ -15,3 +15,8 @@ class CompanyAdmin(admin.ModelAdmin):
 @admin.register(Manufacturer)
 class ManufacturerAdmin(admin.ModelAdmin):
     readonly_fields = ('logo_thumbnail',)
+
+
+@admin.register(Tag)
+class TagAdmin(admin.ModelAdmin):
+    readonly_fields = ('slug',)

dcc/metadata/migrations/0004_equipment.py

@@ -0,0 +1,20 @@
+# Generated by Django 4.0.2 on 2022-03-06 19:50
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('metadata', '0003_metadata_extend'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Equipment',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('equipment_type', models.CharField(max_length=128, unique=True)),
+            ],
+        ),
+    ]

dcc/metadata/migrations/0005_tag_delete_equipment.py

@@ -0,0 +1,27 @@
+# Generated by Django 4.0.2 on 2022-03-06 20:02
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('metadata', '0004_equipment'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Tag',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=128, unique=True)),
+                ('slug', models.CharField(max_length=128, unique=True)),
+            ],
+            options={
+                'verbose_name_plural': 'Equipment',
+            },
+        ),
+        migrations.DeleteModel(
+            name='Equipment',
+        ),
+    ]

dcc/metadata/migrations/0006_alter_tag_options.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.0.2 on 2022-03-06 20:15
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('metadata', '0005_tag_delete_equipment'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='tag',
+            options={},
+        ),
+    ]

dcc/metadata/models.py

@@ -1,7 +1,8 @@
 from django.db import models
+from django.dispatch.dispatcher import receiver
 from django_countries.fields import CountryField
 
-from dcc.utils import get_image_preview
+from dcc.utils import get_image_preview, slugify
 
 
 class Manufacturer(models.Model):
@@ -67,3 +68,16 @@ class Decoder(models.Model):
     def image_thumbnail(self):
         return get_image_preview(self.image.url)
     image_thumbnail.short_description = "Preview"
+
+
+class Tag(models.Model):
+    name = models.CharField(max_length=128, unique=True)
+    slug = models.CharField(max_length=128, unique=True)
+
+    def __str__(self):
+        return self.name
+
+
+@receiver(models.signals.pre_save, sender=Tag)
+def tag_pre_save(sender, instance, **kwargs):
+    instance.slug = slugify(instance.name)