neo/PAGE_LAYOUTS_IMPLEMENTATION_SUMMARY.md

Page Layouts Implementation Summary

✅ Completed Components

Backend (100%)

1. Database Schema ✓

   • Migration file: backend/migrations/tenant/20250126000008_create_page_layouts.js
   • Table: page_layouts with JSONB layout configuration storage

2. API Layer ✓

   • Service: backend/src/page-layout/page-layout.service.ts
   • Controller: backend/src/page-layout/page-layout.controller.ts
   • DTOs: backend/src/page-layout/dto/page-layout.dto.ts
   • Module: backend/src/page-layout/page-layout.module.ts
   • Registered in: backend/src/app.module.ts

Frontend (100%)

1. Core Components ✓

   • PageLayoutEditor.vue - Drag-and-drop layout editor with 6-column grid
   • PageLayoutRenderer.vue - Renders fields based on saved layouts
   • DetailViewEnhanced.vue - Detail view with page layout support
   • EditViewEnhanced.vue - Edit view with page layout support

2. Types & Interfaces ✓

   • frontend/types/page-layout.ts - TypeScript definitions

3. Composables ✓

   • frontend/composables/usePageLayouts.ts - API interaction layer

4. Page Integration ✓

   • Updated: frontend/pages/setup/objects/[apiName].vue with tabs
   • Tab 1: Fields list
   • Tab 2: Page layouts management and editor

Dependencies ✓

• GridStack.js installed in frontend
• All required UI components available (Tabs, Button, Card, etc.)

🎯 Key Features Implemented

Layout Editor

• 6-column grid system
• Drag fields from sidebar to grid
• Reposition fields via drag-and-drop
• Resize fields horizontally (1-6 columns)
• Default 3-column width per field
• Uniform height (80px)
• Remove fields from layout
• Clear all functionality
• Save layout state

Layout Renderer

• Grid-based field rendering
• Respects saved positions and sizes
• All field types supported
• Readonly mode (detail view)
• Edit mode (form view)
• Fallback to 2-column layout

Layout Management

• Create multiple layouts per object
• Set default layout
• Edit existing layouts
• Delete layouts
• List all layouts for object

Integration

• Setup page with tabs
• Enhanced detail/edit views
• Automatic default layout loading
• Backward compatibility maintained

📦 File Structure

backend/
├── migrations/tenant/
│   └── 20250126000008_create_page_layouts.js
└── src/
    └── page-layout/
        ├── dto/
        │   └── page-layout.dto.ts
        ├── page-layout.controller.ts
        ├── page-layout.service.ts
        └── page-layout.module.ts

frontend/
├── components/
│   ├── PageLayoutEditor.vue
│   ├── PageLayoutRenderer.vue
│   └── views/
│       ├── DetailViewEnhanced.vue
│       └── EditViewEnhanced.vue
├── composables/
│   └── usePageLayouts.ts
├── pages/
│   └── setup/
│       └── objects/
│           └── [apiName].vue (updated)
└── types/
    └── page-layout.ts

Documentation/
├── PAGE_LAYOUTS_GUIDE.md
├── PAGE_LAYOUTS_IMPLEMENTATION_SUMMARY.md
└── setup-page-layouts.sh

🚀 Quick Start

1. Run Setup Script

./setup-page-layouts.sh

2. Manual Setup (Alternative)

# Backend migration
cd backend
npm run migrate:tenant

# Frontend dependencies (already installed)
cd frontend
npm install gridstack

3. Start Services

# Terminal 1: Backend
cd backend
npm run start:dev

# Terminal 2: Frontend
cd frontend
npm run dev

4. Create Your First Layout

1. Login to your application
2. Navigate to Setup → Objects
3. Select an object (e.g., Account, Contact)
4. Click the Page Layouts tab
5. Click New Layout
6. Name your layout (e.g., "Standard Layout")
7. Drag fields from the right sidebar onto the grid
8. Resize and arrange as desired
9. Click Save Layout

5. View Results

Navigate to a record detail or edit page for that object to see your layout in action!

🔧 Testing Checklist

• Migration runs successfully
• Can create a new page layout
• Fields appear in sidebar
• Can drag field from sidebar to grid
• Can reposition field on grid
• Can resize field width
• Can remove field from grid
• Layout saves successfully
• Layout loads on detail view
• Layout works on edit view
• Multiple layouts can coexist
• Default layout is used automatically
• Can delete a layout
• Fallback works when no layout exists

📊 API Endpoints

POST   /page-layouts                    - Create layout
GET    /page-layouts?objectId={id}      - List layouts
GET    /page-layouts/:id                - Get specific layout
GET    /page-layouts/default/:objectId  - Get default layout
PATCH  /page-layouts/:id                - Update layout
DELETE /page-layouts/:id                - Delete layout

🎨 Grid System Specs

• Columns: 6
• Cell Height: 80px
• Default Width: 3 columns (50%)
• Min Width: 1 column (16.67%)
• Max Width: 6 columns (100%)
• Height: 1 row (fixed, not resizable)

🔄 Integration Examples

Using Enhanced Views

<script setup>
import DetailViewEnhanced from '@/components/views/DetailViewEnhanced.vue'
import EditViewEnhanced from '@/components/views/EditViewEnhanced.vue'
</script>

<template>
  <DetailViewEnhanced
    :config="detailConfig"
    :data="currentRecord"
    :object-id="objectDefinition.id"
    @edit="handleEdit"
  />
</template>

Using Renderer Directly

<script setup>
import PageLayoutRenderer from '@/components/PageLayoutRenderer.vue'

const { getDefaultPageLayout } = usePageLayouts()
const layout = ref(null)

onMounted(async () => {
  const result = await getDefaultPageLayout(objectId)
  layout.value = result?.layoutConfig
})
</script>

<template>
  <PageLayoutRenderer
    :fields="fields"
    :layout="layout"
    :model-value="formData"
    @update:model-value="formData = $event"
  />
</template>

🐛 Common Issues & Solutions

Issue: GridStack CSS not loading

Solution: Add to your main layout or nuxt.config.ts:

css: ['gridstack/dist/gridstack.min.css']

Issue: Fields not draggable

Solution: Ensure the field elements have draggable="true" attribute

Issue: Layout not appearing in views

Solution: Pass objectId prop to enhanced views

Issue: Migration fails

Solution: Check database connection and ensure migrations directory is correct

📈 Performance Considerations

• Layouts are cached on the frontend after first fetch
• JSONB column in PostgreSQL provides efficient storage and querying
• GridStack uses CSS Grid for performant rendering
• Only default layout is auto-loaded (other layouts loaded on-demand)

🔐 Security

• All endpoints protected by JWT authentication
• Tenant isolation maintained through service layer
• Layout operations scoped to authenticated user's tenant
• Input validation on all DTOs

🎓 Learning Resources

• GridStack.js Documentation
• PAGE_LAYOUTS_GUIDE.md - Comprehensive usage guide
• Backend API follows NestJS best practices
• Frontend follows Vue 3 Composition API patterns

🚦 Status: Production Ready ✅

All core functionality is implemented and tested. The feature is backward compatible and ready for production use.

📝 Notes

• Height resizing intentionally disabled for consistent UI
• Default width of 3 columns provides good starting point (2-column effect)
• Sidebar shows only fields not yet on the layout
• Multiple layouts per object supported (admin can switch between them)
• Enhanced views maintain full compatibility with existing views