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@alt3/sequelize-to-json-schemas

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sequelize-to-json-schemas

Convert Sequelize models into various JSON Schema variants (using the Strategy Pattern).

Supported Schemas

JSON Schema Draft-07
OpenAPI 3.0

More welcome, inspiration found here

Installation

npm install @alt3/sequelize-to-json-schemas --save

Usage

const { JsonSchemaManager, JsonSchema7Strategy, OpenApi3Strategy } = require('@alt3/sequelize-to-json-schemas');
const schemaManager = new JsonSchemaManager();

// now generate a JSON Schema Draft-07 model schema
let schema = schemaManager.generate(userModel, new JsonSchema7Strategy());

// and/or the OpenAPI 3.0 equivalent
schema = schemaManager.generate(userModel, new OpenApi3Strategy());

Main Goals

understandable code, highly maintainable
support for Sequelize versions 4, 5 and beyond
valid schemas (enforced by the ajv and Swagger Parser validators)
JsonSchemaManager for single (rock solid) core functionality shared between all strategies
StrategyInterface for simplified implementation of new schema variants

Configuration Options

To configure global options use the JsonSchemaManager initialization:

const schemaManager = new JsonSchemaManager({
  baseUri: '/',
  absolutePaths: true,
  hideComments: true,
});

To configure (per) model options use the generate() method:

const userSchema = schemaManager.generate(userModel, strategy, {
  title: 'MyUser',
  description: 'My Description',
  exclude: ['someAttribute'],
  include: ['someAttribute'],
  associations: true,
  excludeAssociations: ['someAssociation'],
  includeAssociations: ['someAssociation'],
});

To enrich your attributes add one or more jsonSchema options to your Sequelize attribute definitions:

module.exports = sequelize => {
  const Model = sequelize.define('user', {
    userName: {
      type: DataTypes.STRING,
      jsonSchema: {
        description: 'My attribute description',
        examples: ['My example 1', 'My example 2'],
      },
    },
  });

  return Model;
};

License

This project is released under MIT LICENSE.

Contributing

Please refer to the guidelines for contributing.