studysprint/notes/work-report-2026-04-21-to-22.md

#Overview

Today I implemented a full CRUD system for the three core entities in the application:

• Subjects
• Assignments
• Tasks

This includes creating, editing, viewing details, and deleting records, as well as connecting all screens using Expo Router.

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#ImplementedFeatures

#Subjects

Created full CRUD flow:

• createSubject.tsx
• editSubject.tsx
• viewDetailsSubject.tsx

Functionality:

• Create new subjects
• Edit existing subjects
• View subject details
• Delete subjects

Relationships:

• Subjects act as the top-level entity
• Assignments can optionally be linked to a subject via sId
• Subjects are displayed:
  • globally (subjects.tsx)
  • or standalone (viewDetailsSubjects.tsx)

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#Assignments

Created full CRUD flow:

• createAssignment.tsx
• editAssignment.tsx
• viewDetailsAssignment.tsx

Functionality:

• Create assignments (with optional sId)
• Edit assignments
• View assignment details
• Delete assignments

Relationships:

• Assignments can exist:
  • linked to a subject (sId)
  • or standalone (sId = null)
• Assignments are displayed:
  • globally (assignments.tsx)
  • or within a subject (viewDetailsSubject.tsx)
  • or standalone (viewDetailsAssignment.tsx)

---

#Tasks

Created full CRUD flow:

• createTask.tsx
• editTask.tsx
• viewDetailsTask.tsx

Functionality:

• Create tasks
• Edit tasks
• View task details
• Delete tasks

Relationships:

• Tasks are linked to assignments via aId
• Tasks are accessed through assignment detail pages
• Assignments are displayed:
  • globally (tasks.tsx)
  • or within an assignment (viewDetailsAssignment.tsx)
  • or standalone (viewDetailsTask.tsx)

---

#RoutingStructure

#TopLevelScreens

• subjects.tsx → list of all subjects
• assignments.tsx → list of all assignments
• tasks.tsx → list of all tasks
• index.tsx → pre-existing home screen

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#DataModel

#Subject

• sId
• title
• description
• isActive
• lastChanged
• uId

#Assignment

• aId
• title
• description
• deadline
• isCompleted
• lastChanged
• uId
• sId

#Task

• tId
• title
• description
• isCompleted
• lastChanged
• uId
• aId