Bootcamp API - Typescript & vanilla mongoDB & Zod

• TS + Mongoose version is in this repo

• Discussed in Medium article(s)

basic mongoose + TS

• ✅ drop mongoose dependency
• ✅ mongo client setup
• ✅ schema design via zod
• ✅ actually validate with ZOD
• ✅ index on reviews
• ✅ extract service logic from route handlers
• ✅ change schema design: bootcamp references populated persistently, other references are looked up
• ✅ replicate mongoose middleware (calculations) with mongo adaptor
• ✅ replicate mongoose lookups with mongo adaptor
• ✅ update seeder to accomodate new schema
• ✅ advanced search with mongo adaptor: aggregation pipeline incl. advanced filtering

Schema Design Summary

CONSTRAINTS -- user owner of bootcamp is the only one who can add a course to that bootcamp -- -- max 1 bootcamp per owner --

Only bootcamps references are persisted as subdocuments. The others are looked up on the fly when requested.

BOOTCAMP

• owner: ref
• courses: ref[]
• participants: ref[]

USER

• bootcampOwned: subDoc
• bootcampsJoined: subDoc[]

REVIEW

• bootcamp: subDoc
• author: ref

COURSE

• bootcamp: subDoc
• owner: ref

Suboptimal Functionality / Design

• Missing Error Handling (always assuming db CRUD ops succeed)

• No atomicity in operations (basic CRUD + hook-equivalents should occur together atomically)

• Advanced search

  • not properly validating queryParams -> suboptimal error handling
  • agg pipeline stages for advanced filtering uses hardcoded fields (identify fields that are arrays)
  • casting of queryParams to numbers where necessary -> identified based on hardcoded fields