Notes App with Search

A notes app is useful for practicing search, pagination, and private data.

Features

• auth,
• create note,
• edit note,
• delete note,
• search notes,
• filter by tag,
• paginate results,
• sort by updated date.

API example

GET /api/notes?search=mongodb&tag=backend&page=1&limit=20&sort=-updatedAt

MongoDB query idea

const filter = {
  userId: req.user.id,
}

if (search) {
  filter.title = { $regex: search, $options: 'i' }
}

if (tag) {
  filter.tags = tag
}

Important backend rules

• all note queries must include userId,
• limit must have a max value,
• sort fields should be whitelisted,
• search should be indexed or improved later if data grows.

What this project proves

• authenticated CRUD,
• search API,
• pagination,
• filters,
• React list states,
• ownership security.