Shared Component Data in NextJS

There are situations when several components need to access the same data. As an example, let's say we have a certain array of users. On one route, we want to show a list of users, and on another route with a dynamic parameter - the description of a specific user by their id.

Let's implement what was described. We will create the following file structure:

• /app/users/users.js/list/page.jsx/show/[id]/page.jsx

Let's create a separate file with user data:

/app/users/users.jsexport default users = [
  {
    id: 1,
    name: 'name1',
    surn: 'surn1',
  },
  {
    id: 2,
    name: 'name2',
    surn: 'surn2',
  },
  {
    id: 3,
    name: 'name3',
    surn: 'surn3',
  },
];

Let's create a component to display the list of users:

app/users/list/page.jsximport users from '../users.js';

export default function List() {
  let list = users.map(user => {
    return <li>
      {user.name}
    </li>;
  });
  
  return <ul>
    {list}
  </ul>;
}

Let's create a component to display a specific user by their id:

app/users/show/[id]/page.jsximport users from '../../users.js';

export default function User({params}) {
  let user = users[params.id];
  
  return <div>
    <span>{user.id}</span>
    <span>{user.name}</span>
    <span>{user.surn}</span>
  </div>;
}

/app/prods/prods.jslet prods = [
  {
    id: 1,
    name: 'prod1',
    cost: 100,
    desc: 'desc1',
  },
  {
    id: 2,
    name: 'prod2',
    cost: 200,
    desc: 'desc2',
  },
  {
    id: 3,
    name: 'prod3',
    cost: 300,
    desc: 'desc3',
  },
];