# crisjohndev/smart-library-book-monitoring-and-reminder-system architecture

> Architecture diagram of the GitHub repository crisjohndev/smart-library-book-monitoring-and-reminder-system, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-14). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/crisjohndev/smart-library-book-monitoring-and-reminder-system
- Repository: https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system

## Overview

This is a Django school-library system for managing students, attendance, book inventory, circulation, and reporting. Staff use the web interface to maintain student and book records, issue and return books, monitor overdue loans, and view reports. An RFID attendance endpoint records student time-in/time-out; separate due-book endpoints expose reminders and accept SMS-sent confirmations. The views and API perform domain operations against shared Django models. Source excerpts show these key flows, but not every route implementation or the reminder consumer; those connections are omitted or marked unverified.

Main entry points: [`core/views.py`](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py) (Staff workflows), [`core/models.py`](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/models.py) (Student and attendance data), [`library_system/urls.py`](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/library_system/urls.py) (Django routing), [`api/views.py`](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/api/views.py) (Device and reminder API)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_web["Staff web workflows"]
  node_web_views["Staff workflows<br/>[views.py]"]
  node_student_ops["Student records<br/>[views.py]"]
  node_attendance_ops["Attendance logs<br/>[views.py]"]
  node_catalog_ops["Book catalog<br/>[views.py]"]
  node_circulation["Loan and return<br/>[views.py]"]
  node_monitoring["Overdue and reports<br/>[views.py]"]
end

subgraph group_domain["Library domain"]
  node_records["Student and attendance data<br/>[models.py]"]
  node_catalog["Book inventory<br/>[models.py]"]
  node_loans["Borrowing records<br/>[models.py]"]
  node_database[("SQLite database<br/>[settings.py]")]
end

subgraph group_api["Device and reminder API"]
  node_api_views["Device and reminder API<br/>[views.py]"]
  node_attendance_api["RFID time tracking<br/>[views.py]"]
  node_due_api["Due-book lookup<br/>[views.py]"]
  node_sms_confirm["SMS sent confirmation<br/>[views.py]"]
end

subgraph group_platform["Django runtime"]
  node_django["Django routing<br/>[urls.py]"]
  node_web_routes["Web route map<br/>[urls.py]"]
  node_api_routes["API route map<br/>[urls.py]"]
end

node_staff(("Library staff"))
node_attendance_client(("RFID attendance device"))
node_reminder_client(("Reminder sender"))

node_staff -->|"uses web app"| node_django
node_django -->|"includes routes"| node_web_routes
node_web_routes -->|"dispatches requests"| node_web_views
node_web_views -->|"handles student tasks"| node_student_ops
node_web_views -->|"handles attendance views"| node_attendance_ops
node_web_views -->|"handles catalog tasks"| node_catalog_ops
node_web_views -->|"handles loan tasks"| node_circulation
node_web_views -->|"handles reports"| node_monitoring
node_student_ops -->|"creates records"| node_records
node_attendance_ops -.->|"reads attendance"| node_records
node_catalog_ops -->|"creates books"| node_catalog
node_circulation -->|"looks up students"| node_records
node_circulation -->|"looks up books"| node_catalog
node_circulation -->|"creates and updates loans"| node_loans
node_monitoring -->|"counts inventory"| node_catalog
node_monitoring -->|"queries loan status"| node_loans
node_attendance_client -->|"sends RFID request"| node_django
node_django -->|"routes API"| node_api_routes
node_api_routes -->|"dispatches endpoints"| node_api_views
node_api_views -->|"serves attendance"| node_attendance_api
node_api_views -->|"serves due lookup"| node_due_api
node_api_views -->|"serves confirmation"| node_sms_confirm
node_attendance_api -->|"finds students"| node_records
node_attendance_api -->|"writes attendance"| node_records
node_due_api -->|"queries due loans"| node_loans
node_sms_confirm -->|"marks reminder sent"| node_loans
node_reminder_client -.->|"requests reminder data"| node_django
node_due_api -.->|"returns due-book data"| node_reminder_client
node_records -.->|"persists records"| node_database
node_catalog -.->|"persists inventory"| node_database
node_loans -.->|"persists loans"| node_database

click node_django "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/library_system/urls.py"
click node_web_routes "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/urls.py"
click node_web_views "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py"
click node_student_ops "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py"
click node_attendance_ops "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py"
click node_catalog_ops "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py"
click node_circulation "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py"
click node_monitoring "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py"
click node_records "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/models.py"
click node_catalog "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/models.py"
click node_loans "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/models.py"
click node_api_routes "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/library_system/urls.py"
click node_api_views "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/api/views.py"
click node_attendance_api "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/api/views.py"
click node_due_api "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/api/views.py"
click node_sms_confirm "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/api/views.py"
click node_database "https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/library_system/settings.py"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_web_views,node_student_ops,node_attendance_ops,node_catalog_ops,node_circulation,node_monitoring toneBlue
class node_records,node_catalog,node_loans,node_database toneAmber
class node_api_views,node_attendance_api,node_due_api,node_sms_confirm toneMint
class node_django,node_web_routes,node_api_routes toneRose
class node_staff,node_attendance_client,node_reminder_client toneIndigo
```

## Components

### Staff web workflows

- [Staff workflows](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py): `core/views.py`
- [Student records](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py): `core/views.py`
- [Attendance logs](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py): `core/views.py`
- [Book catalog](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py): `core/views.py`
- [Loan and return](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py): `core/views.py`
- [Overdue and reports](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/views.py): `core/views.py`

### Library domain

- [Student and attendance data](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/models.py): `core/models.py`
- [Book inventory](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/models.py): `core/models.py`
- [Borrowing records](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/models.py): `core/models.py`
- [SQLite database](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/library_system/settings.py): `library_system/settings.py`

### Device and reminder API

- [Device and reminder API](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/api/views.py): `api/views.py`
- [RFID time tracking](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/api/views.py): `api/views.py`
- [Due-book lookup](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/api/views.py): `api/views.py`
- [SMS sent confirmation](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/api/views.py): `api/views.py`

### Django runtime

- [Django routing](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/library_system/urls.py): `library_system/urls.py`
- [Web route map](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/core/urls.py): `core/urls.py`
- [API route map](https://github.com/crisjohndev/smart-library-book-monitoring-and-reminder-system/blob/main/library_system/urls.py): `library_system/urls.py`

### Other components

- **Library staff**
- **RFID attendance device**
- **Reminder sender**

## Connections

- Library staff → Django routing: uses web app (evidence: `library_system/urls.py`)
- Django routing → Web route map: includes routes (evidence: `library_system/urls.py`)
- Web route map → Staff workflows: dispatches requests (evidence: `core/urls.py`)
- Staff workflows → Student records: handles student tasks (evidence: `core/urls.py`)
- Staff workflows → Attendance logs: handles attendance views (evidence: `core/urls.py`)
- Staff workflows → Book catalog: handles catalog tasks (evidence: `core/urls.py`)
- Staff workflows → Loan and return: handles loan tasks (evidence: `core/urls.py`)
- Staff workflows → Overdue and reports: handles reports (evidence: `core/urls.py`)
- Student records → Student and attendance data: creates records (evidence: `core/views.py`)
- Attendance logs → Student and attendance data: reads attendance (evidence: `core/views.py`)
- Book catalog → Book inventory: creates books (evidence: `core/views.py`)
- Loan and return → Student and attendance data: looks up students (evidence: `core/views.py`)
- Loan and return → Book inventory: looks up books (evidence: `core/views.py`)
- Loan and return → Borrowing records: creates and updates loans (evidence: `core/views.py`)
- Overdue and reports → Book inventory: counts inventory (evidence: `core/views.py`)
- Overdue and reports → Borrowing records: queries loan status (evidence: `core/views.py`)
- RFID attendance device → Django routing: sends RFID request (evidence: `library_system/urls.py`)
- Django routing → API route map: routes API (evidence: `library_system/urls.py`)
- API route map → Device and reminder API: dispatches endpoints (evidence: `library_system/urls.py`)
- Device and reminder API → RFID time tracking: serves attendance (evidence: `api/views.py`)
- Device and reminder API → Due-book lookup: serves due lookup (evidence: `api/views.py`)
- Device and reminder API → SMS sent confirmation: serves confirmation (evidence: `api/views.py`)
- RFID time tracking → Student and attendance data: finds students (evidence: `api/views.py`)
- RFID time tracking → Student and attendance data: writes attendance (evidence: `api/views.py`)
- Due-book lookup → Borrowing records: queries due loans (evidence: `api/views.py`)
- SMS sent confirmation → Borrowing records: marks reminder sent (evidence: `api/views.py`)
- Reminder sender → Django routing: requests reminder data
- Due-book lookup → Reminder sender: returns due-book data
- Student and attendance data → SQLite database: persists records
- Book inventory → SQLite database: persists inventory
- Borrowing records → SQLite database: persists loans