From 107f67e22b4bf15602e6b5a01f120301db6fc9ee Mon Sep 17 00:00:00 2001
From: Bas van den Aakster <bvdaakster@gmail.com>
Date: Mon, 6 Oct 2025 23:37:17 +0200
Subject: [PATCH] Add templateSlug field auto-populated from template
 relationship and bump version to 0.4.17
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Added templateSlug text field to Emails collection that is automatically populated via beforeChange hook when template relationship is set, making template slug accessible in beforeSend hook.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
---
 package.json              |  2 +-
 src/collections/Emails.ts | 31 ++++++++++++++++++++++++++++++-
 src/types/index.ts        |  1 +
 3 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index cd1ce08..52a6ea7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@xtr-dev/payload-mailing",
-  "version": "0.4.16",
+  "version": "0.4.17",
   "description": "Template-based email system with scheduling and job processing for PayloadCMS",
   "type": "module",
   "main": "dist/index.js",
diff --git a/src/collections/Emails.ts b/src/collections/Emails.ts
index fcd2a5c..f31b145 100644
--- a/src/collections/Emails.ts
+++ b/src/collections/Emails.ts
@@ -12,7 +12,7 @@ const Emails: CollectionConfig = {
     description: 'Email delivery and status tracking',
   },
   defaultPopulate: {
-    template: true,
+    templateSlug: true,
     to: true,
     cc: true,
     bcc: true,
@@ -40,6 +40,14 @@ const Emails: CollectionConfig = {
         description: 'Email template used (optional if custom content provided)',
       },
     },
+    {
+      name: 'templateSlug',
+      type: 'text',
+      admin: {
+        description: 'Slug of the email template (auto-populated from template relationship)',
+        readOnly: true,
+      },
+    },
     {
       name: 'to',
       type: 'text',
@@ -208,6 +216,27 @@ const Emails: CollectionConfig = {
     },
   ],
   hooks: {
+    beforeChange: [
+      async ({ data, req }) => {
+        // Auto-populate templateSlug from template relationship
+        if (data.template) {
+          try {
+            const template = await req.payload.findByID({
+              collection: 'email-templates',
+              id: typeof data.template === 'string' ? data.template : data.template.id,
+            })
+            data.templateSlug = template.slug
+          } catch (error) {
+            // If template lookup fails, clear the slug
+            data.templateSlug = undefined
+          }
+        } else {
+          // Clear templateSlug if template is removed
+          data.templateSlug = undefined
+        }
+        return data
+      }
+    ],
     // Simple approach: Only use afterChange hook for job management
     // This avoids complex interaction between hooks and ensures document ID is always available
     afterChange: [
diff --git a/src/types/index.ts b/src/types/index.ts
index 4826286..0a0d010 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -14,6 +14,7 @@ export type JSONValue = string | number | boolean | { [k: string]: unknown } | u
 export interface BaseEmailDocument {
   id: string | number
   template?: any
+  templateSlug?: string | null
   to: string[]
   cc?: string[] | null
   bcc?: string[] | null