Model restructuring

inventory/admin/item.py

@@ -5,9 +5,9 @@ from django.conf import settings
 from inventory.models import Item, Documentation
 
 
-class DocumentationInlineAdmin(admin.TabularInline):
+class DocumentationAdmin(admin.ModelAdmin):
-    model = Documentation
+    list_display = ['file']
-    extra = 1
+    search_fields = ['file']
 
 
 class ItemAdmin(admin.ModelAdmin):
@@ -16,10 +16,10 @@ class ItemAdmin(admin.ModelAdmin):
     list_filter = ['container']
     search_fields = ['name', 'description']
     readonly_fields = ['created_at', 'changed_at']
-    inlines = [DocumentationInlineAdmin]
 
     def view_on_site(self, obj):
         url = reverse('item-detail', kwargs={'pk': obj.id})
         return settings.SERVER_URL + url
 
 admin.site.register(Item, ItemAdmin)
+admin.site.register(Documentation, DocumentationAdmin)

inventory/migrations/0005_auto_20200808_0135.py

@@ -0,0 +1,24 @@
+# Generated by Django 3.0.4 on 2020-08-07 23:35
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('inventory', '0004_auto_20200804_0055'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='documentation',
+            name='item',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='documentation', to='inventory.Item'),
+        ),
+        migrations.AlterField(
+            model_name='item',
+            name='name',
+            field=models.TextField(max_length=255),
+        ),
+    ]

inventory/migrations/0006_remove_documentation_item.py

@@ -0,0 +1,17 @@
+# Generated by Django 3.0.4 on 2020-08-07 23:57
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('inventory', '0005_auto_20200808_0135'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='documentation',
+            name='item',
+        ),
+    ]

inventory/migrations/0007_item_documentation.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.0.4 on 2020-08-07 23:58
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('inventory', '0006_remove_documentation_item'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='item',
+            name='documentation',
+            field=models.ManyToManyField(to='inventory.Documentation'),
+        ),
+    ]

inventory/models/box.py

@@ -1,3 +1,5 @@
+from django.utils.text import slugify
+from django.template.loader import get_template, TemplateDoesNotExist
 from django.db import models
 from .container import CanBeContained, Container
 
@@ -9,4 +11,13 @@ class Box(CanBeContained, Container):
     changed_at = models.DateTimeField(auto_now=True)
 
     class Meta:
-        verbose_name_plural = 'Boxes'
+        verbose_name_plural = 'Boxes'
+
+    @property
+    def template_name(self):
+        template = 'inventory/box-' + slugify(self.layout.name) + '.html'
+        try:
+            get_template(template)
+            return template
+        except TemplateDoesNotExist:
+            return 'inventory/box-generic.html'

inventory/models/documentation.py

@@ -6,4 +6,6 @@ class Documentation(models.Model):
     changed_at = models.DateTimeField(auto_now=True)
 
     file = models.FileField()
-    item = models.ForeignKey('inventory.Item', on_delete=models.CASCADE, related_name='documentation')
+
+    def __str__(self):
+        return self.file.name

inventory/models/item.py

@@ -5,7 +5,7 @@ from .container import CanBeContained
 
 
 class Item(CanBeContained):
-    name = models.CharField(max_length=255, unique=True)
+    name = models.TextField(max_length=255)
     description = models.CharField(max_length=4096)
     created_at = models.DateTimeField(auto_now_add=True)
     changed_at = models.DateTimeField(auto_now=True)
@@ -17,6 +17,7 @@ class Item(CanBeContained):
     distributor_item_no = models.CharField(max_length=255, null=True, blank=True)
     price = models.DecimalField(decimal_places=3, max_digits=7, null=True, blank=True)
     last_ordered_on = models.DateField(null=True, blank=True)
+    documentation = models.ManyToManyField('inventory.Documentation')
 
     def __str__(self):
         return self.name