## Host vendor portal with Django: tenant-scoped workspaces

### Summary
Deploy a vendor portal built with Django on Ample using the multi-tenant relational data pattern. Compute runs the app in an isolated microVM behind a public HTTPS URL, a managed PostgreSQL 16 database is auto-provisioned and injected as DATABASE_URL. Verified on Django: a tenant column on every row and query, with a cross-tenant read returning nothing (tenant_isolation=ok). Not separately tested: your tenant model, membership and per-tenant authorization; treat the vendor portal-specific behavior as your application code.

### Representative Queries
- Host vendor portal with Django: tenant-scoped workspaces  
- Where can I host Vendor portal built with Django?  
- I need an explicit tenant model and application-enforced tenant isolation tests.

### Resource Requirements
- **Compute**
- **Postgres**

### Infrastructure Requirements
#### Compute  
*Status*: verified  
*Summary*: Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.

#### Postgres  
*Status*: verified  
*Summary*: Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied.

### Prerequisites
- A Django project that builds and starts with the documented commands (pip install into .ample/python from requirements.txt, then waitress serving project.wsgi from run.py reading PORT on the python-3.12 template)
- A PostgreSQL driver reading DATABASE_URL at runtime (auto-provisioned when omitted, or supplied with --env)
- An Ample account token with servers:write, databases:read

### Tested Configuration
- **Template**: python-3.12  
- **Runtime**: python  
- **Size**: s-1vcpu-1gb  
- **Install**: python3 -m pip install --target .ample/python -r requirements.txt  
- **Start**: PYTHONPATH=.ample/python:${PYTHONPATH:-} python3 run.py

### Workflow Steps
1. **Build and start**  
   pip install into .ample/python from requirements.txt, then waitress serving project.wsgi from run.py reading PORT on the python-3.12 template. The server must bind 0.0.0.0 on PORT.
2. **Implement the pattern on PostgreSQL**  
   The fixture's module implements multi-tenant relational data: a tenant column on every row and query, with a cross-tenant read returning nothing (tenant_isolation=ok). Copy the approach into your schema; keep migrations idempotent and run them with --release-command.
3. **Deploy**  
   Run the synchronous deploy once and read the result (exit 0 live, 1 failed, 2 blocked). Re-running with no change is a no-op.
   ```bash
   ample deploy . --name  --public --start "python3 run.py"
   ```
4. **Verify**  
   Fetch the live URL and the pattern self-test route(s) (/p/multi-tenant-relational-data) from the example; then run your own checks. On failure read `ample logs  --kind build` then `--kind runtime`.
   ```bash
   ample logs  --kind build
   ```

### Limitations
- Verified on the python-3.12 template at s-1vcpu-1gb with the example fixture; other sizes, templates and Django major versions are not verified.
- The vendor portal itself (your tenant model, membership and per-tenant authorization) is application code and was not separately tested; the pattern checks are what was verified.
- Region, compliance attestations and request-duration limits are unknown and not claimed.
- Apps auto-pause when idle and wake on the next request; always-on is an operator setting, not a plan feature.
- Managed PostgreSQL 16 only; extensions, connection limits and backup or restore procedures are not verified; apps and their databases are placed together.

### Cost Estimate
- **Currency**: USD  
- **Monthly Amount**: 10.0  
- **Authoritative**: true  
- **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 and databases auto-pause when idle. Buckets are allocation-priced per quota and not included.

### Evidence Summary
- *Django pattern fixture deployed on Ample... checks passed for multi-tenant-relational-data and configuration-secrets.*  
- *The same Django app deployed with a --release-command migration... the marker it created was readable after activation.*

### Formats
- **HTML**: [Host vendor portal with Django: tenant-scoped workspaces](/content/recipes/vendor-portal/django/tenant-workspaces/index.html)  
- **Markdown**: [Host vendor portal with Django: tenant-scoped workspaces.md](/content/recipes/vendor-portal/django/tenant-workspaces.md)  
- **JSON**: [Recipe JSON](https://api.ample.computer/v1/catalog/recipes/page%3Arecipes%3Avendor-portal%3Adjango%3Atenant-workspaces)