Added newsletters.button_style column

ref https://linear.app/ghost/issue/PROD-1717

- added `newsletters.button_style` column ready for controlling button styles in emails, with two options of `fill` (default, current production design) and `outline` which is a new option

Author: kevinansfield

ghost/core/core/server/data/migrations/versions/5.120/2025-05-13-17-36-56-add-newsletters-button-style-column.js

@@ -0,0 +1,8 @@
+const {createAddColumnMigration} = require('../../utils');
+
+module.exports = createAddColumnMigration('newsletters', 'button_style', {
+    type: 'string',
+    maxlength: 50,
+    nullable: false,
+    defaultTo: 'fill'
+});

ghost/core/core/server/data/schema/schema.js

@@ -47,7 +47,8 @@ module.exports = {
         title_color: {type: 'string', maxlength: 50, nullable: true},
         created_at: {type: 'dateTime', nullable: false},
         updated_at: {type: 'dateTime', nullable: true},
-        button_corners: {type: 'string', maxlength: 50, nullable: false, defaultTo: 'rounded', validations: {isIn: [['square', 'rounded', 'pill']]}}
+        button_corners: {type: 'string', maxlength: 50, nullable: false, defaultTo: 'rounded', validations: {isIn: [['square', 'rounded', 'pill']]}},
+        button_style: {type: 'string', maxlength: 50, nullable: false, defaultTo: 'fill', validations: {isIn: [['fill', 'outline']]}}
     },
     posts: {
         id: {type: 'string', maxlength: 24, nullable: false, primary: true},

ghost/core/core/server/models/newsletter.js

@@ -31,7 +31,8 @@ const Newsletter = ghostBookshelf.Model.extend({
             title_color: null,
             feedback_enabled: false,
             show_excerpt: false,
-            button_corners: 'rounded'
+            button_corners: 'rounded',
+            button_style: 'fill'
         };
     },
 

ghost/core/test/e2e-api/admin/__snapshots__/members.test.js.snap

@@ -6122,7 +6122,7 @@ exports[`Members API Can subscribe to a newsletter 5: [headers] 1`] = `
 Object {
   "access-control-allow-origin": "http://127.0.0.1:2369",
   "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
-  "content-length": "4682",
+  "content-length": "4748",
   "content-type": "application/json; charset=utf-8",
   "content-version": StringMatching /v\\\\d\\+\\\\\\.\\\\d\\+/,
   "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,