jsonLogic GraphQL Query Keys

Exposes immutable useful functions from Lodash to jsonLogic

The Problem

Unsupported GraphQL keys: ==, ===, !=, !==, >, >=, <, <=, !!, !, %, +, *, -, /

The Solution

Use any of _eq, _gt, _gte, _lt, _lte etc from Lodash methods

Installation

1# Yarn
2$ yarn add json-logic-js-graphql
3
4# NPM
5$ npm install json-logic-js-graphql --save

Usage

1
2import { jsonLogic } from 'json-logic-js-graphql'
3
4const rules = {
5  _eq: [{ var: 'foo' }, { var: 'bar' }],
6}
7const data = { foo: 'bar', bar: 'bar' }
8
9jsonLogic.apply(rules, data)
10 

GraphQL

jsonLogic's equal operator is "===" so it can't be used as a GraphQL key. We expose the eq lodash method as _eq to jsonLogic.

1mutation {
2  updateResource(
3    id: "609ce9dbec9fb60004087784"
4    logic: { _eq: [{ var: "foo" }, "bar"] }
5  ) {
6    id
7  }
8}
9

All Lodash methods exposed with the _ namespace to avoid overwriting the default jsonLogic's functionality

Date functions using momentJs

_gteDate, _gtDate, _lteDate, _ltDate, _eqDate, _getDate

example:

1const rules = {
2  _gteDate: [
3    [{ var: 'from' }, { var: 'to' }],
4    [364, 'days'],
5  ],
6}
7const data = { from: '2020-10-01', to: '2021-10-01' }
8
9jsonLogic.apply(rules, data)
10

Supported Lodash functions:

Can be found here:

Tests

Install dependencies with yarn install and then run the tests yarn test

Inpired

Inpired from formio utils

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/msroot/json-logic-js-graphql. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The library is available as open source under the terms of the MIT License.

Code of Conduct

Everyone interacting in the json-logic-js-graphql project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.