biblical-guide.com/payload/collections/Customers.ts

import { CollectionConfig } from 'payload';

export const Customers: CollectionConfig = {
  slug: 'customers',
  admin: {
    useAsTitle: 'email',
    defaultColumns: ['email', 'name', 'stripeCustomerId', 'createdAt'],
    group: 'E-Commerce',
  },
  fields: [
    {
      name: 'stripeCustomerId',
      type: 'text',
      unique: true,
      required: true,
      index: true,
      admin: {
        readOnly: true,
      },
    },
    {
      name: 'email',
      type: 'email',
      required: true,
      index: true,
    },
    {
      name: 'name',
      type: 'text',
    },
    {
      name: 'user',
      type: 'relationship',
      relationTo: 'users',
      hasMany: false,
      unique: true,
      admin: {
        description: 'Associated user account',
      },
    },
    {
      name: 'metadata',
      type: 'json',
      admin: {
        description: 'Custom Stripe metadata',
      },
    },
    {
      name: 'description',
      type: 'textarea',
    },
  ],
  access: {
    read: ({ req }) => {
      if (!req.user) {
        return false;
      }

      if (req.user.role === 'admin' || req.user.role === 'super-admin') {
        return true;
      }

      // Users can only read their own customer record
      return {
        user: {
          equals: req.user.id,
        },
      };
    },
    create: ({ req }) => {
      return req.user?.role === 'admin' || req.user?.role === 'super-admin';
    },
    update: ({ req }) => {
      return req.user?.role === 'admin' || req.user?.role === 'super-admin';
    },
    delete: ({ req }) => {
      return req.user?.role === 'super-admin';
    },
  },
};