# Apply Database Schema Changes for Symfony

## Summary
Schema changes for a Symfony app on Ample. Verified on Symfony: a --release-command migration ran before activation and its marker was readable by the live app (migrated=release-ok). Build and start: composer install --no-dev from composer.lock with Symfony Runtime's dotenv disabled (extra.runtime.disable_dotenv; .env never ships, its values arrive as encrypted env, and compile-time parameters such as DEFAULT_URI need a default), then FrankenPHP serving public/ (php-server with the index.php fallback) reading PORT on the php-8.5 template with APP_ENV=prod.

## Prerequisites
- A Symfony project (composer install --no-dev from composer.lock with Symfony Runtime's dotenv disabled (extra.runtime.disable_dotenv; .env never ships, its values arrive as encrypted env, and compile-time parameters such as DEFAULT_URI need a default), then FrankenPHP serving public/ (php-server with the index.php fallback) reading PORT on the php-8.5 template with APP_ENV=prod)
- A PostgreSQL driver reading DATABASE_URL at runtime
- An Ample account token with servers:write, databases:read

## Resource Requirements
- **Compute**: Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.
- **Postgres**: Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied.

## Workflow Steps
### Build and Start
composer install --no-dev from composer.lock with Symfony Runtime's dotenv disabled (extra.runtime.disable_dotenv; .env never ships, its values arrive as encrypted env, and compile-time parameters such as DEFAULT_URI need a default), then FrankenPHP serving public/ (php-server with the index.php fallback) reading PORT on the php-8.5 template with APP_ENV=prod; the server must bind 0.0.0.0 on PORT.

### Run Migrations as the Release Command
Ample runs the command before activation and fails the release if it exits non-zero; keep migrations idempotent.

```bash
ample deploy . --name  --public --release-command "python3 migrate.py"
```

### Verify
Fetch the live URL and /p/migrated on the example; on failure read the build and runtime logs.

```bash
ample logs  --kind build
```

## Success Checks
- app responds on its public URL
  - **Path**: `/`
  - **Expect**: ample canary symfony patterns
- migrated check from the example
  - **Path**: `/p/migrated`
  - **Expect**: see the pattern fixture checks

## Limitations
- Verified on the php-8.5 template at s-1vcpu-1gb; other sizes and Symfony major versions are not verified.
- Region, compliance attestations and request-duration limits are unknown and not claimed.
- Managed PostgreSQL 16 only; extensions, connection limits and backup or restore procedures are not verified.

## Cost Estimate
- **Currency**: USD 
- **Monthly Amount**: 10.0
- **Basis**: size prices from pricing.toml (loaded by the API) at build revision 1ac5595375130d45290090e82ed0f554ccd45405-dirty

### Components
- **App Server** 
  - Size: s-1vcpu-1gb 
  - Quantity: 1.0 
  - Monthly Amount: 5.0 
- **Managed PostgreSQL Database** 
  - Size: s-1vcpu-1gb 
  - Quantity: 1.0 
  - Monthly Amount: 5.0

**Note**: Always-on monthly price of the tested sizes; apps auto-pause when idle. Buckets are allocation-priced per quota and not included.

## Examples
### Symfony Pattern Fixture
- **Description**: Verified schema changes on Symfony.
- **Source Reference**: tests/deploy-canaries/symfony-patterns

## Evidence Summary
- **Kind**: canary_run
- **Summary**: Symfony pattern fixture deployed on Ample (composer install --no-dev from composer.lock with Symfony Runtime's dotenv disabled (extra.runtime.disable_dotenv; .env never ships, its values arrive as encrypted env, and compile-time parameters such as DEFAULT_URI need a default), then FrankenPHP serving public/ (php-server with the index.php fallback) reading PORT on the php-8.5 template with APP_ENV=prod); for this guide: a --release-command migration ran before activation and its marker was readable by the live app (migrated=release-ok).
- **Observed At**: 2026-09-20T22:23:52Z
- **Implementation Revision**: 64a7bb8e37dd-dirty (CLI 64a7bb8e)
- **Expires At**: 2027-03-19T22:23:52Z
- **Scope**: {"checks":["/p/migrated"],"template":"php-8.5"}

## Last Verified At
2026-09-20T22:23:52Z

## Unknowns
- Region availability is unknown until a verified region fact is recorded
- Compliance attestations are unknown; none are claimed

## Formats
- **HTML**: [View guide](/content/guides/symfony/schema-changes/index.html)
- **Markdown**: [View markdown](/content/guides/symfony/schema-changes.md)
- **JSON**: [View JSON](https://api.ample.computer/v1/catalog/recipes/page%3Aguides%3Asymfony%3Aschema-changes)

## Next Actions
- **Action**: Browse the catalog index
  - **Operation**: catalog_index
  - **Method**: GET
  - **Relative Path**: /v1/catalog
- **Action**: Search published recipes by intent, stack and constraints
  - **Operation**: search_recipes
  - **Method**: POST
  - **Relative Path**: /v1/catalog/search
  - **Parameters**: {"body":{"limit":5,"query":"Apply database schema changes for Symfony"}}
- **Action**: Prepare a side-effect-free deployment plan for an authorized project
  - **Operation**: plan_deployment
  - **Method**: POST
  - **Relative Path**: /v1/catalog/plan
  - **Parameters**: {"body":{"inputs":{},"projectId":"","recipeId":"page:guides:symfony:schema-changes","recipeRevision":"r1"}}
- **Action**: Read the existing agent authentication setup
  - **Operation**: existing_auth_setup
  - **Method**: GET
  - **Relative Path**: /mcp/setup
- **Action**: Browse Symfony
  - **Operation**: browse_node
  - **Method**: GET
  - **Relative Path**: /v1/catalog/nodes/stack%3Aframework-symfony
- **Action**: Browse Configure Deployment
  - **Operation**: browse_node
  - **Method**: GET
  - **Relative Path**: /v1/catalog/nodes/intent%3Aconfigure-deployment
- **Action**: Browse Transactional Workflows
  - **Operation**: browse_node
  - **Method**: GET
  - **Relative Path**: /v1/catalog/nodes/pattern%3Atransactional-workflows