WIP - Fix migration for config list views

backend/migrations/tenant/20250131000001_add_layout_type_to_page_layouts.js

@@ -2,24 +2,94 @@
  * @param { import("knex").Knex } knex
  * @returns { Promise<void> }
  */
-exports.up = function(knex) {
+exports.up = async function(knex) {
-  return knex.schema.alterTable('page_layouts', (table) => {
+  // Check if layout_type column already exists (in case of partial migration)
-    // Add layout_type column to distinguish between detail/edit layouts and list view layouts
+  const hasLayoutType = await knex.schema.hasColumn('page_layouts', 'layout_type');
-    // Default to 'detail' for existing layouts
-    table.enum('layout_type', ['detail', 'list']).notNullable().defaultTo('detail').after('name');
   
-    // Update the unique index to include layout_type so we can have both a default detail and default list layout
+  // Check if the old index exists
-    table.dropIndex(['object_id', 'is_default']);
+  const [indexes] = await knex.raw(`SHOW INDEX FROM page_layouts WHERE Key_name = 'page_layouts_object_id_is_default_index'`);
-  });
+  const hasOldIndex = indexes.length > 0;
+
+  // Check if foreign key exists
+  const [fks] = await knex.raw(`
+    SELECT CONSTRAINT_NAME FROM information_schema.TABLE_CONSTRAINTS 
+    WHERE TABLE_SCHEMA = DATABASE() 
+    AND TABLE_NAME = 'page_layouts' 
+    AND CONSTRAINT_TYPE = 'FOREIGN KEY'
+    AND CONSTRAINT_NAME = 'page_layouts_object_id_foreign'
+  `);
+  const hasForeignKey = fks.length > 0;
+
+  if (hasOldIndex) {
+    // First, drop the foreign key constraint that depends on the index (if it exists)
+    if (hasForeignKey) {
+      await knex.schema.alterTable('page_layouts', (table) => {
+        table.dropForeign(['object_id']);
+      });
+    }
+
+    // Now we can safely drop the old index
+    await knex.schema.alterTable('page_layouts', (table) => {
+      table.dropIndex(['object_id', 'is_default']);
+    });
+  }
+
+  // Add layout_type column if it doesn't exist
+  if (!hasLayoutType) {
+    await knex.schema.alterTable('page_layouts', (table) => {
+      // Add layout_type column to distinguish between detail/edit layouts and list view layouts
+      // Default to 'detail' for existing layouts
+      table.enum('layout_type', ['detail', 'list']).notNullable().defaultTo('detail').after('name');
+    });
+  }
+
+  // Check if new index exists
+  const [newIndexes] = await knex.raw(`SHOW INDEX FROM page_layouts WHERE Key_name = 'page_layouts_object_id_layout_type_is_default_index'`);
+  const hasNewIndex = newIndexes.length > 0;
+
+  if (!hasNewIndex) {
+    // Create new index including layout_type
+    await knex.schema.alterTable('page_layouts', (table) => {
+      table.index(['object_id', 'layout_type', 'is_default']);
+    });
+  }
+
+  // Re-check if foreign key exists (may have been dropped above or in previous attempt)
+  const [fksAfter] = await knex.raw(`
+    SELECT CONSTRAINT_NAME FROM information_schema.TABLE_CONSTRAINTS 
+    WHERE TABLE_SCHEMA = DATABASE() 
+    AND TABLE_NAME = 'page_layouts' 
+    AND CONSTRAINT_TYPE = 'FOREIGN KEY'
+    AND CONSTRAINT_NAME = 'page_layouts_object_id_foreign'
+  `);
+  
+  if (fksAfter.length === 0) {
+    // Re-add the foreign key constraint
+    await knex.schema.alterTable('page_layouts', (table) => {
+      table.foreign('object_id').references('id').inTable('object_definitions').onDelete('CASCADE');
+    });
+  }
 };
 
 /**
  * @param { import("knex").Knex } knex
  * @returns { Promise<void> }
  */
-exports.down = function(knex) {
+exports.down = async function(knex) {
-  return knex.schema.alterTable('page_layouts', (table) => {
+  // Drop the foreign key first
+  await knex.schema.alterTable('page_layouts', (table) => {
+    table.dropForeign(['object_id']);
+  });
+
+  // Drop the new index and column, restore old index
+  await knex.schema.alterTable('page_layouts', (table) => {
+    table.dropIndex(['object_id', 'layout_type', 'is_default']);
     table.dropColumn('layout_type');
     table.index(['object_id', 'is_default']);
   });
+
+  // Re-add the foreign key constraint
+  await knex.schema.alterTable('page_layouts', (table) => {
+    table.foreign('object_id').references('id').inTable('object_definitions').onDelete('CASCADE');
+  });
 };