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

by React

react-trello

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

View demo Download Source

Features

  • responsive and extensible
  • easily pluggable into existing application
  • supports pagination when scrolling individual lanes
  • drag-and-drop cards and lanes (compatible with touch devices)
  • event bus for triggering events externally (e.g.: adding or removing cards based on events coming from backend)
  • edit functionality to add/delete cards
  • Parameterised templates to customize lane and card appearance

Getting Started

Install using npm or yarn

$ npm install --save react-trello

or

$ yarn add 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 passed to the board component and that's it.

import React from 'react'
import Board from 'react-trello'

export default class App extends React.Component {
	render() {
		return  <Board data={data} />
	}
}

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

Also refer to the sample project that uses react-trello as illustration: https://github.com/rcdexta/react-trello-example

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
collapsibleLanes boolean Make the lanes with cards collapsible. Default: false
editable boolean Makes the entire board editable. Allow cards to be added or deleted Default: false
handleDragStart function Callback function triggered when card drag is started: handleDragStart(cardId, laneId)
handleDragEnd function Callback function triggered when card drag ends: handleDragEnd(cardId, sourceLaneId, targetLaneId, position)
handleLaneDragStart function Callback function triggered when lane drag is started: handleLaneDragStart(laneId)
handleLaneDragEnd function Callback function triggered when lane drag ends: handleLaneDragEnd(laneId, newPosition)
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, laneId)
onCardAdd function Called when a new card is added: onCardAdd(card, laneId)
addCardLink node Pass custom element to replace the Add Card link at the end of the lane (when board is editable)
newCardTemplate node Pass a custom new card template to add new cards to a lane (when board is editable)
hideCardDeleteIcon boolean Disable showing the delete icon to the top right corner of the card (when board is editable)
onCardDelete function Called when a card is deleted: onCardDelete(cardId, laneId)
onLaneClick function Called when a lane is clicked: onLaneClick(laneId). Card clicks are not propagated to lane click event
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
onDataChange function Called everytime the data changes due to user interaction or event bus: onDataChange(newData)
style object Pass css style props to board container
customCardLayout function Boolean to indicate a custom card template will be specified. Add the card component as child to Board
customLaneHeader element Pass custom lane header as react component to modify appearance
data object Actual board data in the form of json
tagStyle object If cards have tags, use this prop to modify their style

Refer to stories folder for examples on many more options for customization.

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

const 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"})

//To move a card from one lane to another. index specifies the position to move the card to in the target lane
eventBus.publish({type: 'MOVE_CARD', fromLaneId: 'PLANNED', toLaneId: 'WIP', cardId: 'Plan3', index: 0})

//To update the lanes
eventBus.publish({type: 'UPDATE_LANES', lanes: newLaneData})

<Board data={data} eventBusHandle={setEventBus}/>

The first event in the above example 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.

Custom Card Styling

You can completely customize the look-and-feel of each card in any lane by passing in a custom component as child to the Board as seen below:

<Board data={data} customCardLayout>
      <CustomCard />
</Board>

customCardLayout prop must be set to true for the custom card to be rendered

The json content for the card and the card template must agree on the props:

const CustomCard = props => {
  return (
    <div>
      <header
        style={{borderBottom: '1px solid #eee', paddingBottom: 6, marginBottom: 10,
    		 display: 'flex', flexDirection: 'row', justifyContent: 'space-between',
			color: props.cardColor
        }}
      >
        <div style={{ fontSize: 14, fontWeight: 'bold' }}>{props.name}</div>
        <div style={{ fontSize: 11 }}>{props.dueOn}</div>
      </header>
      <div style={{ fontSize: 12, color: '#BD3B36' }}>
        <div style={{ color: '#4C4C4C', fontWeight: 'bold' }}>{props.subTitle}</div>
        <div style={{ padding: '5px 0px' }}><i>{props.body}</i></div>
        <div style={{ marginTop: 10, textAlign: 'center', color: props.cardColor, fontSize: 15, fontWeight: 'bold' }}>
          {props.escalationText}
        </div>
      </div>
    </div>
  )
}

const data = {
    lanes: [
      {
        id: 'lane1',
        title: 'Planned Tasks',
        cards: [
          {
            id: 'Card1',
            name: 'John Smith',
            dueOn: 'due in a day',
            subTitle: 'SMS received at 12:13pm today',
            body: 'Thanks. Please schedule me for an estimate on Monday.',
            escalationText: 'Escalated to OPS-ESCALATIONS!',
            cardColor: '#BD3B36',
            cardStyle: { borderRadius: 6, boxShadow: '0 0 6px 1px #BD3B36', marginBottom: 15 }
          },
          {
            id: 'Card2',
            name: 'Card Weathers',
            dueOn: 'due now',
            subTitle: 'Email received at 1:14pm',
            body: 'Is the estimate free, and can someone call me soon?',
            escalationText: 'Escalated to Admin',
            cardColor: '#E08521',
            cardStyle: { borderRadius: 6, boxShadow: '0 0 6px 1px #E08521', marginBottom: 15 }
          }
        ]
      }
    ]
  }

Editable Board

It is possible to make the entire board editable by setting the editable prop to true. This switch prop will enable existing cards to be deleted and show a Add Card link at the bottom of each lane, clicking which will show an inline editable new card.

Check out the editable board story and its corresponding source code for more details.

Feature Wishlist

  • Making the board fully editable. Currently, the library supports adding new cards to a lane and deleting existing cards. The ability to add new lanes to the end should be possible
  • Rewrite the drag-n-drop functionality to support moving cards to a specific position within a lane or to a different lane. Ability to re-arrange lanes
  • the prop onDataChange is a catch all callback that returns the entire board data when anything changes on the board. Micro-events like when a card is added or re-arranged should be possible too

Check the Milestones for this project to track when the above features will be implemented.

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

GitHub