---
name: Symfony Form Types Validation
slug: symfony-form-types-validation
category: Quality
description: Symfony Form Types Validation helps build Symfony forms with custom form types, validation constraints, HTTP 422 handling, and multi-step flows. Use it when enforcing validation boundaries or aligning access-control checks with domain rules.
github: "https://github.com/dev-toolings/superpowers-symfony/tree/main/skills/form-types-validation"
language: TypeScript
stars: 208
forks: 20
install: "npx degit https://github.com/dev-toolings/superpowers-symfony/tree/main/skills/form-types-validation ~/.claude/skills/form-types-validation"
installs_to: ~/.claude/skills/form-types-validation
source_path: skills/form-types-validation/SKILL.md
collection_size: 23
category_size: 1557
collection_url: "https://dirskills.com/collections/dev-toolings/superpowers-symfony"
added: 2026-09-04T05:27:08.568Z
last_synced: 2026-09-04T05:27:08.568Z
canonical_url: "https://dirskills.com/skills/symfony-form-types-validation"
---

# Symfony Form Types Validation

Symfony Form Types Validation helps build Symfony forms with custom form types, validation constraints, HTTP 422 handling, and multi-step flows. Use it when enforcing validation boundaries or aligning access-control checks with domain rules.

**Install:**

```bash
npx degit https://github.com/dev-toolings/superpowers-symfony/tree/main/skills/form-types-validation ~/.claude/skills/form-types-validation
```

## README

# Form Types Validation (Symfony)

## Use when
- Hardening access-control or validation boundaries.
- Aligning voters/security expressions with domain rules.

## Default workflow
1. Map actor/resource/action decision matrix.
2. Implement voter/constraint logic at the right boundary.
3. Wire checks at controllers and API operations.
4. Test allowed/forbidden/invalid paths comprehensively.

## Guardrails
- Avoid policy logic duplication across layers.
- Do not leak privileged state via error detail.
- Preserve explicit deny behavior for sensitive actions.

## Progressive disclosure
- Use this file for execution posture and risk controls.
- Open references when deep implementation details are needed.

## Output contract
- Security boundary updates.
- Integration points enforcing decisions.
- Negative-path test results.

## References
- `reference.md`
- `docs/complexity-tiers.md`