React-heat-wrapper NPM

react-heat-wrapper

A React higher-order component which takes any react component as an argument, and allows the user to track which elements were clicked, from which websites clicks came from, and finally to see a heatmap overlayed on the component of click data.

Installation

npm install react-heat-wrapper --save

##Github

www.github.com/daveyko/react-heat-wrapper

Usage

var Wrapper = require('react-heat-wrapper');

Model

Initially, you need to set up your own model to store your click data with parameters as follows (this example shows setting up a model in sequelize for a postgres db):

const Sequelize = require('sequelize')
const db = require('../db')


const Click = db.define('click', {
	x  : {
		type     : Sequelize.FLOAT,
		allowNull: false
	},
	y: {
		type: Sequelize.FLOAT,
		allowNull: false
	},
	clientwidth: {
		type: Sequelize.INTEGER,
		allowNull: false
	},
	clientheight: {
		type: Sequelize.INTEGER,
		allowNull: false
	},
	referrer: {
		type: Sequelize.STRING,
		set(val){
			if (val === '') this.setDataValue('referrer', 'n/a')
			else{
				this.setDataValue('referrer', val)
			}
		}
	},
	page: {
		type: Sequelize.STRING,
	},
	count: {
		type: Sequelize.INTEGER,
		defaultValue: 1
	}
})


module.exports = Click

Wrapper takes a user-created api-endpoint to persist clicks data as the first argument. This endpoint should consist of a 'get' and 'post' route.

The post route should be configured to be able to handle a req.body in this format: { x: e.pageX, y: e.pageY, clientwidth: window.innerWidth, clientheight: window.innerHeight, referrer: document.referrer, page: window.location.pathname, }

The get route should be identical to the post route, and should return a json object in the same format as the req.body

Route The following is an example of routes set up using Express for routing and accessing postgres tables using Sequelize

const router = require('express').Router()
const {Click} = require('../db/models')
module.exports = router


router.get('/', (req, res, next) => {
	Click.findAll()
		.then((clicks) => {
			res.json(clicks)
		})
		.catch(next)
})

router.post('/', (req, res, next) => {
	return Click.findOrCreate({
		where: {
			x: req.body.x,
			y: req.body.y,
			clientwidth: req.body.clientwidth,
			clientheight: req.body.clientheight,
			page: req.body.page,
			referrer: req.body.referrer
		},
	}
	)
		.spread((clickInstance, created) =>{
			if (!created){
				return clickInstance.update({count: clickInstance.count + 1})
			} else {
				return clickInstance
			}
		}
		)
		.then((result) => {
			res.json(result)
		})
		.catch(next)
})

The second argument of wrapper is a numerical id given to differentiate between other wrapped components.

Finally, the Wrapper function returns another function that takes the component to be wrapped and tracked as its argument.

SETUP

let wrappedComponent = Wrapper('api/clicks', 1)(componentToWrap)

To activate the heatmap, type 'viewHeatMap(id)' in the console, and select from the options that appear to the top left of your wrapped component.