# sumanadk7/request-approval-system architecture

> Architecture diagram of the GitHub repository sumanadk7/request-approval-system, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-27). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/sumanadk7/request-approval-system
- Repository: https://github.com/sumanadk7/request-approval-system

## Overview

This appears to be a Django REST backend for managing requests through configurable types and verification/approval workflows, with departments, accounts, notifications, and audit support. The tree establishes these domain areas, but the README is empty and most views and models were not sampled, so their wiring and detailed lifecycle are uncertain. The sampled deadline command does establish overdue-request lookup and notification creation; the settings establish PostgreSQL and the custom user model.

Main entry points: [`backend/requests/management/commands/check_deadlines.py`](https://github.com/sumanadk7/request-approval-system/blob/main/backend/requests/management/commands/check_deadlines.py) (Deadline check), [`backend/config/settings.py`](https://github.com/sumanadk7/request-approval-system/blob/main/backend/config/settings.py) (Django configuration), [`backend/accounts/views.py`](https://github.com/sumanadk7/request-approval-system/blob/main/backend/accounts/views.py) (Accounts and permissions), [`backend/workflow/views.py`](https://github.com/sumanadk7/request-approval-system/blob/main/backend/workflow/views.py) (Workflow assignments)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_identity["Identity and access"]
  node_accounts["Accounts and permissions<br/>[views.py]"]
  node_departments["Departments<br/>[views.py]"]
end

subgraph group_request_flow["Request lifecycle"]
  node_request_types["Request types<br/>[views.py]"]
  node_workflow["Workflow assignments<br/>[views.py]"]
  node_requests["Request handling<br/>[views.py]"]
  node_deadline_check["Deadline check<br/>[check_deadlines.py]"]
end

subgraph group_support["Operational support"]
  node_notifications["Notifications<br/>[views.py]"]
  node_audit["Audit<br/>[views.py]"]
  node_common["Common services<br/>[views.py]"]
end

subgraph group_platform["Backend platform"]
  node_api_routes["API routing<br/>[urls.py]"]
  node_settings["Django configuration<br/>[settings.py]"]
  node_database[("PostgreSQL")]
end

node_client(("API client"))

node_settings -->|"configures"| node_database
node_settings -->|"selects user model"| node_accounts
node_deadline_check -->|"queries overdue requests"| node_requests
node_deadline_check -->|"reads assignments"| node_workflow
node_deadline_check -->|"creates alerts"| node_notifications
node_deadline_check -->|"queries administrators"| node_accounts

click node_accounts "https://github.com/sumanadk7/request-approval-system/blob/main/backend/accounts/views.py"
click node_departments "https://github.com/sumanadk7/request-approval-system/blob/main/backend/departments/views.py"
click node_request_types "https://github.com/sumanadk7/request-approval-system/blob/main/backend/request_types/views.py"
click node_workflow "https://github.com/sumanadk7/request-approval-system/blob/main/backend/workflow/views.py"
click node_requests "https://github.com/sumanadk7/request-approval-system/blob/main/backend/requests/views.py"
click node_deadline_check "https://github.com/sumanadk7/request-approval-system/blob/main/backend/requests/management/commands/check_deadlines.py"
click node_notifications "https://github.com/sumanadk7/request-approval-system/blob/main/backend/notifications/views.py"
click node_audit "https://github.com/sumanadk7/request-approval-system/blob/main/backend/audit/views.py"
click node_common "https://github.com/sumanadk7/request-approval-system/blob/main/backend/common/views.py"
click node_api_routes "https://github.com/sumanadk7/request-approval-system/blob/main/backend/config/urls.py"
click node_settings "https://github.com/sumanadk7/request-approval-system/blob/main/backend/config/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_accounts,node_departments,node_client toneBlue
class node_request_types,node_workflow,node_requests,node_deadline_check toneAmber
class node_notifications,node_audit,node_common toneMint
class node_api_routes,node_settings,node_database toneRose
```

## Components

### Identity and access

- [Accounts and permissions](https://github.com/sumanadk7/request-approval-system/blob/main/backend/accounts/views.py): `backend/accounts/views.py`
- [Departments](https://github.com/sumanadk7/request-approval-system/blob/main/backend/departments/views.py): `backend/departments/views.py`

### Request lifecycle

- [Request types](https://github.com/sumanadk7/request-approval-system/blob/main/backend/request_types/views.py): `backend/request_types/views.py`
- [Workflow assignments](https://github.com/sumanadk7/request-approval-system/blob/main/backend/workflow/views.py): `backend/workflow/views.py`
- [Request handling](https://github.com/sumanadk7/request-approval-system/blob/main/backend/requests/views.py): `backend/requests/views.py`
- [Deadline check](https://github.com/sumanadk7/request-approval-system/blob/main/backend/requests/management/commands/check_deadlines.py): `backend/requests/management/commands/check_deadlines.py`

### Operational support

- [Notifications](https://github.com/sumanadk7/request-approval-system/blob/main/backend/notifications/views.py): `backend/notifications/views.py`
- [Audit](https://github.com/sumanadk7/request-approval-system/blob/main/backend/audit/views.py): `backend/audit/views.py`
- [Common services](https://github.com/sumanadk7/request-approval-system/blob/main/backend/common/views.py): `backend/common/views.py`

### Backend platform

- [API routing](https://github.com/sumanadk7/request-approval-system/blob/main/backend/config/urls.py): `backend/config/urls.py`
- [Django configuration](https://github.com/sumanadk7/request-approval-system/blob/main/backend/config/settings.py): `backend/config/settings.py`
- **PostgreSQL**

### Other components

- **API client**

## Connections

- Django configuration → PostgreSQL: configures
- Django configuration → Accounts and permissions: selects user model
- Deadline check → Request handling: queries overdue requests
- Deadline check → Workflow assignments: reads assignments
- Deadline check → Notifications: creates alerts
- Deadline check → Accounts and permissions: queries administrators