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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 v7
OpenAPI v3

More welcome, inspiration found here

Installation

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

Example

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

// 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());

Additional Information

understandable code
compatible with Sequelize v4 and v5
generates valid schemas (test suite using ajv and Swagger Parser validators)
uses the Strategy Pattern for (rock solid) core functionality while easily implementing new schema variants

Configuration

To configure global options use the SchemaManager initialization:

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

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

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

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.