django.md
Travel operators: reporting dashboard using Django
Summary
A reporting dashboard blueprint for travel operators built with Django on Ample. Domain schema: listings (reference, destination, departure_dates, price_from, publishing_status, agency_id): trips as listings with publishing status; agencies (name, license_number, region): operators or branches; suppliers (name, type, agency_id, status): hotels and transport suppliers; reports (agency_id, period, object_key, generated_at): branch sales reports; exports (id, definition, object_key, row_count, generated_at, authorized_role): generated artifacts and who may download them. Public information: published trips and departure dates, destination guides, booking conditions. Kept out of scope until handling is reviewed: traveler passports and identity, payment details, supplier contracts. Passport and payment data are regulated; only published trips and branch reporting are modeled. Technical basis verified on Django: an export query rendered to a CSV artifact stored with metadata in a private bucket and returned only to an authorized caller (401 without token, export=ok rows=3).
Infrastructure requirements
- Compute: verified (Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.)
- Postgres: verified (Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied.)
- S3-compatible object storage: verified (Buckets are S3-compatible with issued credentials; PutObject and GetObject are verified by canary. Other S3 operations are not verified.)
Prerequisites
- A Django project (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 (auto-provisioned when omitted)
- Bucket credentials from
ample bucket createpassed as encrypted S3_* environment variables - A review of which travel operators data classes may be handled at all; this blueprint models public information only
Exact 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
Steps
- Model the travel operators domain. Create the tables listings, agencies, suppliers, reports, exports. Trips as listings with publishing status lives in listings; keep the sensitive classes (traveler passports and identity, payment details, supplier contracts) out of this schema.
- Workflow step 1. Model report definitions scoped to the agency.
- Workflow step 2. Generate report artifacts from queries and store them with metadata.
- Workflow step 3. Authorize downloads (401 without identity).
- Workflow step 4. Deploy and verify an authorized export and the rejected anonymous request.
- Deploy. Run the synchronous deploy once and read the result. Re-running with no change is a no-op.
ample deploy . --name <app-name> --public --start "python3 run.py" --env S3_ENDPOINT=... --env S3_REGION=... --env S3_BUCKET=... --env S3_ACCESS_KEY_ID=... --env S3_SECRET_ACCESS_KEY=...
- Verify. Run the pattern self-test(s) from the example (/p/generated-downloads) and your own acceptance checks for the travel operators workflow.
ample logs <deployment_id> --kind build
Tested examples
- Django pattern fixture (tests/deploy-canaries/django-patterns): Verified generated downloads basis for this blueprint.
Success checks
- app responds on its public URL (
/on the live URL, expect ample canary django patterns) - generated-downloads self-test from the example (
/p/generated-downloadson the live URL, expect see the pattern fixture checks)
Limitations
- The technical basis (generated downloads on Django) was verified with the pattern fixture; the travel operators schema and workflow are an original design for this blueprint and were not executed as a separate application.
- No health, financial, privacy or other compliance claim is made. Passport and payment data are regulated; only published trips and branch reporting are modeled.
- Public content and synthetic examples only until actual data-handling requirements have been reviewed.
- Verified on the python-3.12 template at s-1vcpu-1gb; region, request-duration limits and other sizes are unknown or unverified.
- Managed PostgreSQL 16 only; extensions, connection limits and backup or restore procedures are not verified.
- PutObject and GetObject with path-style addressing are verified; other S3 operations and CDN cache rules are not.
Cost estimate
Estimated 10.00 USD per month (size prices from pricing.toml at build revision a1b8c38919e59cd035ebabaced73cf84ece24371).
- app server x1
s-1vcpu-1gb: 5.00 USD - managed PostgreSQL database x1
s-1vcpu-1gb: 5.00 USD
Always-on monthly price of the tested sizes; apps and databases auto-pause when idle. Buckets are allocation-priced per quota and not included.
Verification evidence
- canary_run on 2026-09-20T03:31:44Z at revision
03b6402b1b3e19178985f08ea4033804521d85d4-dirty (CLI b75e104): Django pattern fixture deployed on Ample (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 generated downloads checks passed: an export query rendered to a CSV artifact stored with metadata in a private bucket and returned only to an authorized caller (401 without token, export=ok rows=3). The blueprint's Travel operators schema and workflow below build on that verified basis and were not separately executed. (expires 2027-03-19T03:31:44Z)
Last verified: 2026-09-20T03:31:44Z
Execution binding
MCP tool ample_deploy (registry mcp:ample_deploy), schema hash 876465fce906da0c observed 2026-09-21T03:19:59.461917+00:00 at revision 49962bcade4f, binding state current, required scopes: servers:write, databases:read, buckets:read.