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JSON Schemas to describe digital planning services, applications, and more

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Digital Planning Data schemas

This repository contains data specifications to describe Digital Planning services developed by Open Digital Planning. Each specification is communicated via a JSON Schema document.

Our initial specification defines data structures, rules, and validation logic for planning applications - including Lawful Development Certificate, Prior Approval, and Planning Permission services - that are being designed and submitted via PlanX.

Digital Planning Data schemas aim to encourage more interoperability and consistency between systems by offering a central, version controlled specification for documenting and validating planning data.

Going forward, we hope that this repository will expand beyond applications to further describe planning reference numbers, site notices, consultations, and more.

Usage

There's two main options for integrating with Digital Planning Data schemas:

  1. Reference a hosted schema file directly:

    https://theopensystemslab.github.io/digital-planning-data-schemas/<VERSION>/schema.json

  2. Clone this repository and reference the local schema files programmatically in your own code using tools that support JSON Schema validation

For more detailed info on integrating and validating schemas, please refer to the examples and tests in this repo.

Repository structure

/examples: Examples of valid payloads for each application type supported by this specification.

/schema: The main JSON Schema file. The main branch of this repo will reflect the @next version, while historic versions are documented and released on the dist branch.

/types: TypeScript interfaces used to generate the JSON Schema.

/tests: Test suites to ensure that the generated schema and example payloads are valid, accurate, and capable of handling different scenarios.

Installation

Assumes PNPM is available globally.

pnpm i

Developing

The JSON Schema is defined using TypeScript interfaces and then generated using the ts-json-schema-generator library.

To make changes, update /types and then run pnpm build to automatically generate the output JSON file under /schema.

Types should be annotated using JSDocs, which will then be read during schema generation.

Please see the JSON schema docs for a full list of references for various types.

Adding examples and testing

Add a TypeScript file to /examples/data with at least one exported variable representing an example payload definition.

Add each exported payload to examplesToConvert in /scripts/build-json-examples and examplesToTest in /tests/usage.test.ts.

Run pnpm build-json-examples to automatically generate a corresponding JSON file per example payload in the root of /examples.

Run pnpm test to confirm your example payload can be successfully validated against the Digital Planning Data schema.

Publishing

To publish a new version, open a pull request against main which increments the package.json version.

On merge, the publish.yml GitHub Action will update the dist branch, create a release, and publish the new version via GitHub pages at http://theopensystemslab.github.io/digital-planning-data-schemas/<VERSION>/schema.json

Contributing

We welcome feedback, bug reports, and contributions to help improve and grow the Digital Planning Data schemas via GitHub Issues and Pull Requests.

License

Distributed under the Mozilla Public License Version 2.0. See LICENSE.txt for more information.

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