Add default for intro -- wagtail needs to be able to create blank page.

Author: alflanagan

app/alloydflanagan/blog/migrations/0004_alter_blogindexpage_intro.py

@@ -0,0 +1,19 @@
+# Generated by Django 4.2.21 on 2025-06-21 18:14
+
+from django.db import migrations
+import wagtail.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('blog', '0003_alter_blogpost_intro'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='blogindexpage',
+            name='intro',
+            field=wagtail.fields.RichTextField(blank=True, default=''),
+        ),
+    ]

app/alloydflanagan/blog/models.py

@@ -8,7 +8,7 @@
 from wagtail.search import index
 
 class BlogIndexPage(Page):
-    intro = RichTextField(blank=True)
+    intro = RichTextField(blank=True, default='')
 
     content_panels = Page.content_panels + [
         FieldPanel("intro"),