Update field

app/library/migrations/0001_initial.py

@@ -0,0 +1,31 @@
+# Generated by Django 3.2.5 on 2021-07-15 14:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Book',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=255)),
+                ('country', models.CharField(max_length=255)),
+                ('year', models.IntegerField(max_length=5)),
+                ('author', models.CharField(max_length=255)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+            ],
+            options={
+                'verbose_name': 'Book',
+                'verbose_name_plural': 'Books',
+                'ordering': ('created_at',),
+            },
+        ),
+    ]

app/library/migrations/0002_alter_book_year.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.5 on 2021-07-15 14:24
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('library', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='book',
+            name='year',
+            field=models.IntegerField(),
+        ),
+    ]

app/library/models.py

@@ -6,7 +6,7 @@ from django.db import models
 class Book(models.Model):
     title = models.CharField(max_length=255)
     country = models.CharField(max_length=255)
-    year = models.CharField(max_length=4)
+    year = models.IntegerField()
     author = models.CharField(max_length=255)
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)

release-tasks.sh

@@ -1,4 +1,2 @@
-rm -rf app/library/migrations
-python manage.py makemigrations library
 python manage.py migrate
 python manage.py runscript create_books