# kamaldoharey/node-crud architecture

> Architecture diagram of the GitHub repository kamaldoharey/node-crud, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-06-22). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/kamaldoharey/node-crud
- Repository: https://github.com/kamaldoharey/node-crud

## Overview

1. This repository is a small Node.js CRUD application, organized as a server-rendered monolith rather than a separated frontend/backend system.

2. The runtime entry point is `server.js`, which likely boots the HTTP server, wires middleware, and attaches the application routes.

3. Request routing is split into `server/routes/router.js`, which is the traffic director for CRUD endpoints. It maps incoming requests to controller actions.

4. The controller layer lives in `server/controller/controller.js`. This is the main application logic boundary: it receives requests, coordinates data access, and decides which view or response to return.

5. Persistence is isolated behind `server/model/model.js` plus `server/database/connection.js`. That separation suggests a classic data-access layer where SQL or database operations are centralized behind a connection module.

6. Rendering is handled through EJS templates in `views/`. The app is server-side rendered, with page templates for list, add, and update flows:
   - `views/index.ejs` for the main listing
   - `views/add_user.ejs` for create form
   - `views/update_user.ejs` for edit form

7. Shared UI fragments are factored into `views/include/` (`_header`, `_footer`, `_form`, `_show`). This indicates reusable template partials that reduce duplication across CRUD pages.

8. A small service layer exists at `server/services/render.js`. Its role is likely to centralize how pages are rendered and keep controller code from being filled with template-specific details.

9. Static presentation assets are served from `assets/css/style.css` and `assets/js/index.js`. These are the client-side styling and interactivity layer, separate from the server-side CRUD logic.

10. The main architectural flow is: browser request → Express router → controller → model/database → controller → render service → EJS view → HTML response. The data path is clearly split from the presentation path.

11. The presence of `package.json` / `package-lock.json` confirms an npm-managed Node stack. No additional infrastructure is visible in the tree; the app appears self-contained and locally served, with the database as the main external dependency.

12. The `.history/` directory looks like editor or local history artifacts and is not part of the application architecture.

Main entry points: [`views/index.ejs`](https://github.com/kamaldoharey/node-crud/blob/main/views/index.ejs) (Index), [`server/services/render.js`](https://github.com/kamaldoharey/node-crud/blob/main/server/services/render.js) (Render svc), [`server/controller/controller.js`](https://github.com/kamaldoharey/node-crud/blob/main/server/controller/controller.js) (Controller), [`views/update_user.ejs`](https://github.com/kamaldoharey/node-crud/blob/main/views/update_user.ejs) (Update user)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_runtime["Runtime"]
  node_server_entry["Server<br/>entrypoint<br/>[server.js]"]
end

subgraph group_server["Server"]
  node_http_router["Router<br/>route map<br/>[router.js]"]
  node_app_controller["Controller<br/>app logic<br/>[controller.js]"]
  node_render_service["Render svc<br/>view service<br/>[render.js]"]
  node_data_model["Model<br/>data access<br/>[model.js]"]
  node_db_connection[("DB conn<br/>database conn<br/>[connection.js]")]
end

subgraph group_views["Views"]
  node_view_index["Index<br/>ejs page<br/>[index.ejs]"]
  node_view_add["Add user<br/>ejs page<br/>[add_user.ejs]"]
  node_view_update["Update user<br/>ejs page<br/>[update_user.ejs]"]
  node_partial_header["Header<br/>ejs partial<br/>[_header.ejs]"]
  node_partial_footer["Footer<br/>ejs partial<br/>[_footer.ejs]"]
  node_partial_form["Form<br/>ejs partial<br/>[_form.ejs]"]
  node_partial_show["Show<br/>ejs partial<br/>[_show.ejs]"]
end

subgraph group_assets["Assets"]
  node_style_css["Styles<br/>[style.css]"]
  node_client_js["Client JS<br/>browser script<br/>[index.js]"]
end

node_server_entry -->|"mounts"| node_http_router
node_server_entry -->|"loads"| node_render_service
node_http_router -->|"dispatches to"| node_app_controller
node_app_controller -->|"uses"| node_data_model
node_data_model -->|"queries via"| node_db_connection
node_app_controller -->|"renders through"| node_render_service
node_render_service -->|"renders"| node_view_index
node_render_service -->|"renders"| node_view_add
node_render_service -->|"renders"| node_view_update
node_view_index -->|"includes"| node_partial_header
node_view_index -->|"includes"| node_partial_footer
node_view_add -->|"includes"| node_partial_form
node_view_update -->|"includes"| node_partial_form
node_view_update -->|"includes"| node_partial_show
node_view_index -->|"styles with"| node_style_css
node_view_index -->|"scripts"| node_client_js

click node_server_entry "https://github.com/kamaldoharey/node-crud/blob/main/server.js"
click node_http_router "https://github.com/kamaldoharey/node-crud/blob/main/server/routes/router.js"
click node_app_controller "https://github.com/kamaldoharey/node-crud/blob/main/server/controller/controller.js"
click node_render_service "https://github.com/kamaldoharey/node-crud/blob/main/server/services/render.js"
click node_data_model "https://github.com/kamaldoharey/node-crud/blob/main/server/model/model.js"
click node_db_connection "https://github.com/kamaldoharey/node-crud/blob/main/server/database/connection.js"
click node_view_index "https://github.com/kamaldoharey/node-crud/blob/main/views/index.ejs"
click node_view_add "https://github.com/kamaldoharey/node-crud/blob/main/views/add_user.ejs"
click node_view_update "https://github.com/kamaldoharey/node-crud/blob/main/views/update_user.ejs"
click node_partial_header "https://github.com/kamaldoharey/node-crud/blob/main/views/include/_header.ejs"
click node_partial_footer "https://github.com/kamaldoharey/node-crud/blob/main/views/include/_footer.ejs"
click node_partial_form "https://github.com/kamaldoharey/node-crud/blob/main/views/include/_form.ejs"
click node_partial_show "https://github.com/kamaldoharey/node-crud/blob/main/views/include/_show.ejs"
click node_style_css "https://github.com/kamaldoharey/node-crud/blob/main/assets/css/style.css"
click node_client_js "https://github.com/kamaldoharey/node-crud/blob/main/assets/js/index.js"

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_server_entry toneBlue
class node_http_router,node_app_controller,node_render_service,node_data_model,node_db_connection toneAmber
class node_view_index,node_view_add,node_view_update,node_partial_header,node_partial_footer,node_partial_form,node_partial_show toneMint
class node_style_css,node_client_js toneRose
```

## Components

### Runtime

Node process that starts the app and handles requests

- [Server](https://github.com/kamaldoharey/node-crud/blob/main/server.js): entrypoint · Boots the HTTP server and wires middleware/routes · `server.js`

### Server

Routing, controllers, data access, and rendering

- [Router](https://github.com/kamaldoharey/node-crud/blob/main/server/routes/router.js): route map · Directs CRUD requests to controller actions · `server/routes/router.js`
- [Controller](https://github.com/kamaldoharey/node-crud/blob/main/server/controller/controller.js): app logic · Coordinates request handling, data access, and response selection · `server/controller/controller.js`
- [Render svc](https://github.com/kamaldoharey/node-crud/blob/main/server/services/render.js): view service · Centralizes page rendering and view selection · `server/services/render.js`
- [Model](https://github.com/kamaldoharey/node-crud/blob/main/server/model/model.js): data access · Encapsulates CRUD persistence operations · `server/model/model.js`
- [DB conn](https://github.com/kamaldoharey/node-crud/blob/main/server/database/connection.js): database conn · Shared database connection and query setup · `server/database/connection.js`

### Views

Server-side EJS templates and partials

- [Index](https://github.com/kamaldoharey/node-crud/blob/main/views/index.ejs): ejs page · Main listing page · `views/index.ejs`
- [Add user](https://github.com/kamaldoharey/node-crud/blob/main/views/add_user.ejs): ejs page · Create-user form page · `views/add_user.ejs`
- [Update user](https://github.com/kamaldoharey/node-crud/blob/main/views/update_user.ejs): ejs page · Edit-user form page · `views/update_user.ejs`
- [Header](https://github.com/kamaldoharey/node-crud/blob/main/views/include/_header.ejs): ejs partial · Shared page header fragment · `views/include/_header.ejs`
- [Footer](https://github.com/kamaldoharey/node-crud/blob/main/views/include/_footer.ejs): ejs partial · Shared page footer fragment · `views/include/_footer.ejs`
- [Form](https://github.com/kamaldoharey/node-crud/blob/main/views/include/_form.ejs): ejs partial · Reusable user form fragment · `views/include/_form.ejs`
- [Show](https://github.com/kamaldoharey/node-crud/blob/main/views/include/_show.ejs): ejs partial · Reusable record display fragment · `views/include/_show.ejs`

### Assets

Static CSS and browser-side script

- [Styles](https://github.com/kamaldoharey/node-crud/blob/main/assets/css/style.css): stylesheet · Global presentation rules · `assets/css/style.css`
- [Client JS](https://github.com/kamaldoharey/node-crud/blob/main/assets/js/index.js): browser script · Front-end interactivity for the rendered pages · `assets/js/index.js`

## Connections

- Server → Router: mounts · Server initializes request routing
- Server → Render svc: loads · Server brings in rendering helpers
- Router → Controller: dispatches to · Routes map CRUD endpoints to controller handlers
- Controller → Model: uses · Controller delegates persistence work to the model
- Model → DB conn: queries via · Model executes database operations through the shared connection
- Controller → Render svc: renders through · Controller asks the render service for HTML pages
- Render svc → Index: renders · Render service selects the listing template
- Render svc → Add user: renders · Render service selects the create form template
- Render svc → Update user: renders · Render service selects the edit form template
- Index → Header: includes · List page shares the common header fragment
- Index → Footer: includes · List page shares the common footer fragment
- Add user → Form: includes · Create page reuses the shared form fragment
- Update user → Form: includes · Edit page reuses the shared form fragment
- Update user → Show: includes · Edit page reuses the shared record display fragment
- Index → Styles: styles with · Pages are styled by the shared stylesheet
- Index → Client JS: scripts · Pages load the browser-side script