#react-trello

Pluggable components to add a trello like kanban board to your application

Features

• responsive, extensible and light-weight
• easily pluggable into existing application
• supports pagination on scrolling individual lanes
• drag-and-drop within and across lanes
• api callback functions for external events (e.g.: adding or removing cards using realtime backend integration)

Getting Started

npm install --save react-trello

Usage

The Board component takes a prop called data that contains all the details related to rendering the board. A sample data json is given here to illustrate the contract:

const data = {
  lanes: [
    {
      id: 'lane1',
      title: 'Planned Tasks',
      label: '2/2',
      cards: [
        {id: 'Card1', title: 'Write Blog', description: 'Can AI make memes', label: '30 mins'},
	    {id: 'Card2', title: 'Pay Rent', description: 'Transfer via NEFT', label: '5 mins', metadata: {sha: 'be312a1'}}
      ]
    },
    {
      id: 'lane2',
      title: 'Completed',
      label: '0/0',
      cards: []
    }
  ]
}

The data is fed to the board component and that's it.

 <Board data={data} />

Refer to storybook for detailed examples: https://rcdexta.github.io/react-trello/

Documentation

Board

This is the container component that encapsulates the lanes and cards

Name	Type	Description
draggable	boolean	Makes all cards in the lanes draggable. Default: false
onDragStart	function	Callback function triggered when card drag is started: onDragStart(cardId, laneId)
onDragEnd	function	Callback function triggered when card drag ends: onDragEnd(cardId, sourceLaneId, targetLaneId)
onLaneScroll	function	Called when a lane is scrolled to the end: onLaneScroll(requestedPage, laneId)
onCardClick	function	Called when a card is clicked: onCardClick(cardId, metadata)
laneSortFunction	function	Used to specify the logic to sort cards on a lane: laneSortFunction(card1, card2)
eventBushandle	function	This is a special function that providers a publishHook to pass new events to the board. See details in Publish Events section

Refer to tests for more detailed info about the components

Publish Events

When defining the board, it is possible to obtain a event hook to the component to publish new events later after the board has been rendered. Refer the example below:

let eventBus = undefined

let setEventBus = (handle) => {
  eventBus = handle
}
//To add a card
eventBus.publish({type: 'ADD_CARD', laneId: 'COMPLETED', card: {id: "M1", title: "Buy Milk", label: "15 mins", description: "Also set reminder"}})

//To remove a card
eventBus.publish({type: 'REMOVE_CARD', laneId: 'PLANNED', cardId: "M1"})
  
<Board data={data}
       eventBushandle={setEventBus}/>

The code will move the card Buy Milk from the planned lane to completed lane. We expect that this library can be wired to a backend push api that can alter the state of the board in realtime.

Development

cd react-trello/
yarn install
yarn run storybook

Scripts

1. npm run lint : Lint all js files
2. npm run lintfix : fix linting errors of all js files
3. npm run semantic-release : make a release. Leave it for CI to do.
4. npm run storybook: Start developing by using storybook
5. npm run test : Run tests. tests file should be written as *.test.js and using ES2015
6. npm run test:watch : Watch tests while writing
7. npm run test:cover : Show coverage report of your tests
8. npm run test:report : Report test coverage to codecov.io. Leave this for CI
9. npm run build: transpile all ES6 component files into ES5(commonjs) and put it in dist directory
10. npm run docs: create static build of storybook in docs directory that can be used for github pages

Learn how to write stories here

License

MIT