# brianmtreese/angular-signal-forms-course-project architecture

> Architecture diagram of the GitHub repository brianmtreese/angular-signal-forms-course-project, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-15). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/brianmtreese/angular-signal-forms-course-project
- Repository: https://github.com/brianmtreese/angular-signal-forms-course-project

## Overview

This is an Angular Signal Forms course example centered on a signup form: users enter data, receive validation feedback, and submit it to a mock registration service. The form component also initializes an ID, checks username availability asynchronously, and supports alternate-email collection updates. The README documents additional Signal Forms topics, but some are not active in the sampled implementation; those capabilities are represented conservatively. The age-stepper is present in the tree, but its role and connections were not sampled.

Main entry points: [`src/form/form.component.ts`](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts) (Signup form), [`src/form/auth-api.service.ts`](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/auth-api.service.ts) (Mock registration), [`src/form/user-id.service.ts`](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/user-id.service.ts) (Mock user ID), [`src/form/form.component.html`](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.html) (Form template)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_form["Signup form"]
  node_signup["Signup form<br/>[form.component.ts]"]
  node_model["Signup model<br/>[form.component.ts]"]
  node_validation["Field validation<br/>[form.component.ts]"]
  node_async_validation["Async validation<br/>[form.component.ts]"]
  node_dynamic_emails["Email collection<br/>[form.component.ts]"]
  node_submission["Form submission<br/>[form.component.ts]"]
end

subgraph group_services["Form services"]
  node_registration["Mock registration"]
  node_user_id["Mock user ID<br/>[user-id.service.ts]"]
  node_availability["Username check<br/>[form.component.ts]"]
end

subgraph group_controls["Form controls"]
  node_form_template["Form template"]
  node_age_stepper["Age stepper"]
  node_signal_forms["Signal Forms API"]
end

node_user(("User"))

node_user -->|"enters data"| node_signup
node_signup -->|"renders"| node_form_template
node_signup -->|"initializes"| node_model
node_signup -->|"gets ID"| node_user_id
node_signup -->|"configures"| node_validation
node_signup -->|"configures"| node_async_validation
node_async_validation -->|"checks"| node_availability
node_signup -->|"updates"| node_dynamic_emails
node_signup -->|"configures"| node_submission
node_submission -->|"registers"| node_registration
node_signup -->|"uses"| node_signal_forms

click node_signup "https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts"
click node_model "https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts"
click node_validation "https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts"
click node_async_validation "https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts"
click node_dynamic_emails "https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts"
click node_submission "https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts"
click node_registration "https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/auth-api.service.ts"
click node_user_id "https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/user-id.service.ts"
click node_availability "https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts"
click node_form_template "https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.html"
click node_age_stepper "https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/age-stepper/age-stepper.component.ts"

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_signup,node_model,node_validation,node_async_validation,node_dynamic_emails,node_submission,node_user toneBlue
class node_registration,node_user_id,node_availability toneAmber
class node_form_template,node_age_stepper,node_signal_forms toneMint
```

## Components

### Signup form

- [Signup form](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts): `src/form/form.component.ts`
- [Signup model](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts): `src/form/form.component.ts`
- [Field validation](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts): `src/form/form.component.ts`
- [Async validation](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts): `src/form/form.component.ts`
- [Email collection](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts): `src/form/form.component.ts`
- [Form submission](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts): `src/form/form.component.ts`

### Form services

- [Mock registration](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/auth-api.service.ts): `src/form/auth-api.service.ts`
- [Mock user ID](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/user-id.service.ts): `src/form/user-id.service.ts`
- [Username check](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.ts): `src/form/form.component.ts`

### Form controls

- [Form template](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/form/form.component.html): `src/form/form.component.html`
- [Age stepper](https://github.com/brianmtreese/angular-signal-forms-course-project/blob/main/src/age-stepper/age-stepper.component.ts): `src/age-stepper/age-stepper.component.ts`
- **Signal Forms API**

### Other components

- **User**

## Connections

- User → Signup form: enters data (evidence: `README.md`)
- Signup form → Form template: renders (evidence: `README.md`)
- Signup form → Signup model: initializes (evidence: `src/form/form.component.ts`)
- Signup form → Mock user ID: gets ID (evidence: `src/form/form.component.ts`)
- Signup form → Field validation: configures (evidence: `src/form/form.component.ts`)
- Signup form → Async validation: configures (evidence: `src/form/form.component.ts`)
- Async validation → Username check: checks (evidence: `src/form/form.component.ts`)
- Signup form → Email collection: updates (evidence: `src/form/form.component.ts`)
- Signup form → Form submission: configures (evidence: `src/form/form.component.ts`)
- Form submission → Mock registration: registers (evidence: `src/form/form.component.ts`)
- Signup form → Signal Forms API: uses (evidence: `README.md`)