form-types-validation SKILL.md skillA
form-types-validation from dev-toolings/superpowers-symfony is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dev-toolings/superpowers-symfony/form-types-validation@git:20261005.6632a97Pins git:20261005.6632a97 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dev-toolings/superpowers-symfony
- Path
content/skills/form-types-validation/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261005.6632a97, committed Oct 5, 2026
- First version recorded
- Sep 17, 2026
- Size
- 1,987 bytes
- Repository stars
- 231
- License
- MIT
Build Symfony forms with custom Form Types, validation constraints, HTTP 422 handling, and multi-step flows.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Form Types Validation (Symfony) ## Use when - Building or changing a Symfony form type. - Adding validation constraints on an entity, a DTO, or a form field. - Different rules per context (registration vs profile) through validation groups. - Converting values with a data transformer or reacting with form events. - Writing a custom constraint, or a form spread across several steps. ## Default workflow 1. Put business constraints on the entity or DTO; keep form-level constraints for UI-only rules such as uploads. 2. Build the form type with explicit field types and options. 3. Split rules into validation groups when contexts differ. 4. Add data transformers or `PRE_SET_DATA`/`PRE_SUBMIT` listeners only where the model and the view disagree. 5. In the controller, check `isSubmitted() && isValid()` and pass the form itself to `render()`. ## Guardrails - Pass the form, not `createView()`, to `render()` so an invalid submit answers 422. - A transformer that cannot convert throws `TransformationFailedException`, it never returns garbage. - Do not duplicate the same constraint on the form and on the entity. …
Read the whole file at its exact version.
How to install
mdr add dev-toolings/superpowers-symfony/form-types-validation@sha256:d2df443dec7d064bThe line at the top of this page pins the label git:20261005.6632a97, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_on5npbwfnbmaw64l)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Sep 17, 2026 and Oct 5, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261005.6632a97 latest | 2026-10-05 | 6632a97 | 1,987 B | A | view · diff |
| git:20261005.042befb | 2026-10-05 | 042befb | 1,202 B | A | view · diff |
| git:20260917.3d83f4c | 2026-09-17 | 3d83f4c | 1,231 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1987 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
dev-toolings/superpowers-symfony · 231 stars · license MIT · pushed 2026-10-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_on5npbwfnbmaw64l GET https://markdownregistry.com/api/v1/resolve?ref=dev-toolings/superpowers-symfony/form-types-validation GET https://markdownregistry.com/api/v1/blob/d2df443dec7d064bc90dd55152a72b65c471d9647448021f6c38f8f3e1a8bd7c
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.