remove NULL from all text fields in database

shimatta_kenkyusho/parts/migrations/0009_auto_20220101_1306.py

@@ -0,0 +1,49 @@
+# Generated by Django 3.2.5 on 2022-01-01 13:06
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('parts', '0008_auto_20220101_1250'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='component',
+            name='datasheet_link',
+            field=models.CharField(blank=True, default='', max_length=300),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='component',
+            name='description',
+            field=models.TextField(blank=True, default=''),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='componentparameter',
+            name='text_value',
+            field=models.TextField(blank=True, default=''),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='distributor',
+            name='component_link_pattern',
+            field=models.CharField(blank=True, default='', max_length=255),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='distributor',
+            name='website',
+            field=models.CharField(blank=True, default='', max_length=200),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='manufacturer',
+            name='website',
+            field=models.CharField(blank=True, default='', max_length=200),
+            preserve_default=False,
+        ),
+    ]