fix(migrations): drop column defaults before ALTER TYPE varchar→jsonb

migrations/0020_kvytky_to_payments_richtext.sql

@@ -3,7 +3,7 @@ UPDATE "header" SET "cta_href" = '/payments' WHERE "cta_href" = '/kvytky';
 UPDATE "birthday_page_pricing_packages" SET "cta_href" = '/payments' WHERE "cta_href" = '/kvytky';
 
 -- Change heroDescription, featureText, bottomText from varchar to jsonb
--- (existing text is incompatible with Lexical JSON; fields reset to NULL — re-enter via admin)
+-- Must drop DEFAULT first, then change type (PostgreSQL can't cast text default to jsonb)
 DO $$
 BEGIN
   IF EXISTS (
@@ -11,6 +11,7 @@ BEGIN
     WHERE table_name = 'group_visits_page' AND column_name = 'hero_description'
       AND data_type = 'character varying'
   ) THEN
+    ALTER TABLE "group_visits_page" ALTER COLUMN "hero_description" DROP DEFAULT;
     ALTER TABLE "group_visits_page" ALTER COLUMN "hero_description" TYPE jsonb USING NULL;
   END IF;
 
@@ -19,6 +20,7 @@ BEGIN
     WHERE table_name = 'group_visits_page' AND column_name = 'feature_text'
       AND data_type = 'character varying'
   ) THEN
+    ALTER TABLE "group_visits_page" ALTER COLUMN "feature_text" DROP DEFAULT;
     ALTER TABLE "group_visits_page" ALTER COLUMN "feature_text" TYPE jsonb USING NULL;
   END IF;
 
@@ -27,6 +29,7 @@ BEGIN
     WHERE table_name = 'group_visits_page' AND column_name = 'bottom_text'
       AND data_type = 'character varying'
   ) THEN
+    ALTER TABLE "group_visits_page" ALTER COLUMN "bottom_text" DROP DEFAULT;
     ALTER TABLE "group_visits_page" ALTER COLUMN "bottom_text" TYPE jsonb USING NULL;
   END IF;
 END $$;
@@ -38,6 +41,7 @@ BEGIN
     WHERE table_name = '_group_visits_page_v' AND column_name = 'version_hero_description'
       AND data_type = 'character varying'
   ) THEN
+    ALTER TABLE "_group_visits_page_v" ALTER COLUMN "version_hero_description" DROP DEFAULT;
     ALTER TABLE "_group_visits_page_v" ALTER COLUMN "version_hero_description" TYPE jsonb USING NULL;
   END IF;
 
@@ -46,6 +50,7 @@ BEGIN
     WHERE table_name = '_group_visits_page_v' AND column_name = 'version_feature_text'
       AND data_type = 'character varying'
   ) THEN
+    ALTER TABLE "_group_visits_page_v" ALTER COLUMN "version_feature_text" DROP DEFAULT;
     ALTER TABLE "_group_visits_page_v" ALTER COLUMN "version_feature_text" TYPE jsonb USING NULL;
   END IF;
 
@@ -54,6 +59,7 @@ BEGIN
     WHERE table_name = '_group_visits_page_v' AND column_name = 'version_bottom_text'
       AND data_type = 'character varying'
   ) THEN
+    ALTER TABLE "_group_visits_page_v" ALTER COLUMN "version_bottom_text" DROP DEFAULT;
     ALTER TABLE "_group_visits_page_v" ALTER COLUMN "version_bottom_text" TYPE jsonb USING NULL;
   END IF;
 END $$;