---
name: collection-30c74ad4726f
description: Generate a new Momentum CMS collection with fields, access control, and hooks
argument-hint: <collection-name>
---

# Generate Momentum CMS Collection

Create a new collection file following project conventions.

## Arguments

- `$ARGUMENTS` - Collection name (e.g., "posts", "products", "users")

## Important: Collection Location

All collections are defined in `libs/example-config/src/collections/`. Both example apps (`example-angular`, `example-analog`) import from `@momentumcms/example-config/collections`. **Never define collections in individual apps.**

## Steps

1. Create the collection file at `libs/example-config/src/collections/<name>.collection.ts`

2. Use this template:

```typescript
import {
  defineCollection,
  text,
  richText,
  number,
  date,
  checkbox,
  select,
  relationship,
} from '@momentumcms/core';

export const <PascalName> = defineCollection({
  slug: '<kebab-name>',

  admin: {
    useAsTitle: 'title', // or 'name' - the field to display as title
    defaultColumns: ['title', 'createdAt'],
    group: 'Content', // Admin sidebar group
    icon: 'heroNewspaper', // Sidebar icon (must be registered — see below)
  },

  access: {
    read: () => true,
    create: ({ req }) => !!req.user,
    update: ({ req }) => req.user?.role === 'admin',
    delete: ({ req }) => req.user?.role === 'admin',
  },

  hooks: {
    beforeChange: [],
    afterChange: [],
  },

  fields: [
    text('title', { required: true }),
    // Add more fields as needed
  ],
});
```

3. Export from `libs/example-config/src/collections/index.ts`:

```typescript
// Add import at top
import { <PascalName> } from './<name>.collection';

// Add to the collections array
export const collections: CollectionConfig[] = [
  // ... existing collections,
  <PascalName>,
];

// Add to named exports
export {
  // ... existing exports,
  <PascalName>,
};
```

Both example apps automatically pick up changes since they import from `@momentumcms/example-config/collections`.

4. Remind user: if migration mode is enabled, run `nx run <app>:migrate:generate` after collection changes to create a migration file.

## Field Types Available

### Text Input Fields

- `text(name, options)` - Short text with optional min/max length
- `textarea(name, options)` - Multi-line text with optional rows
- `richText(name, options)` - Rich text editor
- `email(name, options)` - Email input
- `password(name, options)` - Password input with optional min length

### Numeric & Date Fields

- `number(name, options)` - Numeric value with optional min/max/step
- `date(name, options)` - Date/datetime picker

### Boolean & Selection Fields

- `checkbox(name, options)` - Boolean checkbox
- `select(name, { options: [...] })` - Dropdown select (supports `hasMany`)
- `radio(name, { options: [...] })` - Radio button group

### Media & Files

- `upload(name, options)` - File upload with MIME type filtering

### Relationship & Data Fields

- `relationship(name, { collection: () => Ref })` - Reference to another collection (supports `hasMany`, polymorphic)
- `array(name, { fields: [...] })` - Array of nested fields
- `group(name, { fields: [...] })` - Nested object grouping
- `blocks(name, { blocks: [...] })` - Block-based content
- `json(name, options)` - Raw JSON field
- `point(name, options)` - Geolocation point
- `slug(name, { from: 'fieldName' })` - Auto-generated slug from another field

### Layout Fields (non-data storing)

- `tabs(tabs: [...])` - Tabbed sections for organization
- `collapsible(label, { fields: [...] })` - Collapsible section
- `row(fields: [...])` - Horizontal row layout

## Sidebar Icons

All heroicons/outline (324 icons) are provided globally at the admin route level. Just set `admin.icon` to any `hero*` name — no manual registration needed.

The sidebar resolves icons via: `collection.admin.icon` → `collectionIcons[slug]` fallback map → `'heroFolder'` default. To add a slug-based fallback, update `collectionIcons` in `libs/admin/src/lib/widgets/admin-sidebar/admin-sidebar.component.ts`.

Browse available icons at Heroicons. Naming: `hero` + PascalCase (e.g., `heroEnvelopeOpen` for `envelope-open`).


---
Source attribution: DonaldMurillo
Original project: https://github.com/DonaldMurillo/momentum-cms/blob/2655497e37d840a2734d6c845d6948239ff1c980/.claude/skills/collection/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Dave AI.

## Upstream license notice

MIT License

Copyright (c) 2024-present Momentum CMS Contributors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Dave AI resource metadata

Creator / publisher: DonaldMurillo
Original project: https://github.com/DonaldMurillo/momentum-cms/blob/2655497e37d840a2734d6c845d6948239ff1c980/.claude/skills/collection/SKILL.md
Attribution basis: Source repository record

Fields of work: Development & Engineering, Product Management
Roles: Backend Developer, Growth Product Manager, Product Manager
Specialties: Word Documents, Frontend
Tools: Momentum Cms
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: 6f44a29d2e2f749dfbcec4d4d438f168e89c0d0a1b00831cb3fb5366e15a334d