feat:make migrations

applications/backend/django_server/news/migrations/0003_alter_ticker_ticker_alter_news_unique_together.py

@@ -0,0 +1,21 @@
+# Generated by Django 4.2.7 on 2023-12-10 09:21
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("news", "0002_ticker_news_sentiment"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="ticker",
+            name="ticker",
+            field=models.CharField(max_length=100, unique=True),
+        ),
+        migrations.AlterUniqueTogether(
+            name="news",
+            unique_together={("symbol", "headline")},
+        ),
+    ]

applications/backend/django_server/news/models.py

@@ -16,12 +16,15 @@ class News(models.Model):
 
     sentiment = models.CharField(max_length=100)
 
+    class Meta:
+        unique_together = ("symbol", "headline")
+
     def __str__(self):
         return self.headline
 
 
 class Ticker(models.Model):
-    ticker = models.CharField(max_length=100)
+    ticker = models.CharField(max_length=100, unique=True)
 
     def __str__(self):
         return self.ticker