Implement invoice model and admin API

gnuviechadmin/invoices/migrations/0001_initial_invoice_model.py

@@ -0,0 +1,38 @@
+# Generated by Django 3.2.18 on 2023-04-23 10:37
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import invoices.models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Invoice',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('invoice', models.FileField(upload_to=invoices.models.customer_invoice_path)),
+                ('invoice_number', models.SlugField(max_length=10, unique=True, verbose_name='Invoice number')),
+                ('invoice_date', models.DateField(verbose_name='Invoice date')),
+                ('invoice_value', models.DecimalField(decimal_places=2, max_digits=10, verbose_name='Amount')),
+                ('invoice_currency', models.PositiveSmallIntegerField(choices=[(1, 'EUR')], verbose_name='Currency')),
+                ('due_date', models.DateField(verbose_name='Due date')),
+                ('payment_date', models.DateField(blank=True, null=True, verbose_name='Payment date')),
+                ('payment_variant', models.TextField(blank=True, null=True, verbose_name='Payment variant')),
+                ('customer', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL, verbose_name='customer')),
+            ],
+            options={
+                'verbose_name': 'Invoice',
+                'verbose_name_plural': 'Invoices',
+                'ordering': ['-invoice_date', 'customer'],
+            },
+        ),
+    ]

gnuviechadmin/invoices/migrations/0002_refine_invoice_model.py

@@ -0,0 +1,59 @@
+# Generated by Django 3.2.18 on 2023-04-23 12:15
+
+import django.core.validators
+from django.db import migrations, models
+import invoices.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('invoices', '0001_initial_invoice_model'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='invoice',
+            options={'ordering': ['-invoice_date', 'customer'], 'verbose_name': 'invoice', 'verbose_name_plural': 'invoices'},
+        ),
+        migrations.AlterField(
+            model_name='invoice',
+            name='due_date',
+            field=models.DateField(verbose_name='due date'),
+        ),
+        migrations.AlterField(
+            model_name='invoice',
+            name='invoice',
+            field=models.FileField(upload_to=invoices.models.customer_invoice_path, validators=[invoices.models.validate_pdf, django.core.validators.FileExtensionValidator(allowed_extensions=['pdf'])]),
+        ),
+        migrations.AlterField(
+            model_name='invoice',
+            name='invoice_currency',
+            field=models.PositiveSmallIntegerField(choices=[(1, 'EUR')], verbose_name='currency'),
+        ),
+        migrations.AlterField(
+            model_name='invoice',
+            name='invoice_date',
+            field=models.DateField(verbose_name='invoice date'),
+        ),
+        migrations.AlterField(
+            model_name='invoice',
+            name='invoice_number',
+            field=models.SlugField(max_length=10, unique=True, verbose_name='invoice number'),
+        ),
+        migrations.AlterField(
+            model_name='invoice',
+            name='invoice_value',
+            field=models.DecimalField(decimal_places=2, max_digits=10, verbose_name='amount'),
+        ),
+        migrations.AlterField(
+            model_name='invoice',
+            name='payment_date',
+            field=models.DateField(blank=True, null=True, verbose_name='payment date'),
+        ),
+        migrations.AlterField(
+            model_name='invoice',
+            name='payment_variant',
+            field=models.TextField(blank=True, null=True, verbose_name='payment variant'),
+        ),
+    ]