feat: make Currency name unique

app/apps/currencies/migrations/0005_alter_currency_name.py

@@ -0,0 +1,20 @@
+# Generated by Django 5.1.1 on 2024-10-14 14:06
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("currencies", "0004_exchangerate"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="currency",
+            name="name",
+            field=models.CharField(
+                max_length=50, unique=True, verbose_name="Currency Name"
+            ),
+        ),
+    ]

app/apps/currencies/models.py

@@ -5,7 +5,7 @@ from django.utils.translation import gettext_lazy as _
 
 class Currency(models.Model):
     code = models.CharField(max_length=10, unique=True, verbose_name=_("Currency Code"))
-    name = models.CharField(max_length=50, verbose_name=_("Currency Name"))
+    name = models.CharField(max_length=50, verbose_name=_("Currency Name"), unique=True)
     decimal_places = models.PositiveIntegerField(
         default=2,
         validators=[MaxValueValidator(30), MinValueValidator(0)],