Added migration to populate recipient_filter

no-issue

This populates the recipient_filter column for existing emails
based on the visibility of the related post at the time of the
migration.

core/server/data/migrations/versions/3.38/04-populate-recipient-filter-column.js

@@ -0,0 +1,35 @@
+const {createTransactionalMigration} = require('../../utils');
+const logging = require('../../../../../shared/logging');
+
+module.exports = createTransactionalMigration(
+    async function up(connection) {
+        logging.info('Updating emails.recipient_filter values based on posts.visibility');
+
+        const paidPostIds = (await connection('posts')
+            .select('id')
+            .where('visibility', 'paid')).map(row => row.id);
+
+        const membersPostIds = (await connection('posts')
+            .select('id')
+            .where('visibility', 'members')).map(row => row.id);
+
+        const publicPostIds = (await connection('posts')
+            .select('id')
+            .where('visibility', 'public')).map(row => row.id);
+
+        await connection('emails')
+            .update('recipient_filter', 'paid')
+            .whereIn('post_id', paidPostIds);
+
+        await connection('emails')
+            .update('recipient_filter', 'all')
+            .whereIn('post_id', membersPostIds.concat(publicPostIds));
+    },
+
+    async function down(connection) {
+        logging.info('Updating emails.recipient_filter values to paid');
+        await connection('emails')
+            .update('recipient_filter', 'paid');
+    }
+);
+