color-organizer

Color Organizer React

The Color Organizer allows users to add, name, rate, and remove colors from their customized list. The entire state of the color organizer can be represented with a single array.

{
    colors: [
        {
            "id": "0175d1f0-a8c6-41bf-8d02-df5734d829a4",
            "title": "ocean at dusk",
            "color": "#00c4e2",
            "rating": 5
        },
        {
            "id": "83c7ba2f-7392-4d7d-9e23-35adbe186046",
            "title": "lawn",
            "color": "#26ac56",
            "rating": 3
        },
        {
            "id": "a11e3995-b0bd-4d58-8c48-5e49ae7f7f23",
            "title": "bright red",
            "color": "#ff0000",
            "rating": 0
        }
    ]
}

Demo

color organizer

Installation

Run this npm command to install dependencies.

$ npm install

Build

Run this npm command to build the JavaScript Bundle

$ npm run build

Run

Run this npm command to build the JavaScript Bundle and open the browser to the app using the file api.

$ npm start

Updates

We've updated this repo to use React 16. We've made the following updates to the samples and examples:

PropTypes Library

Since React 15, PropTypes has been deprecated and it no longer ships with React. To use PropTypes as they are taught in the book, you will need to install the prop-types library and load them from this module.

    npm install prop-types --save

Change

import { PropTypes } from 'react'

To

import PropTypes from 'prop-types'

Set State updater functions

In React 16, Fiber prioritizes updates and intermittently relinquishes control back to the main JavaScript thread. This change has made using the previous state, this.state, when calling setState problematic. To address this, setState now accepts a function called an updater as the first argument. This function passes the previous state that you may need to use when creating the next state.

In App.js Change

    addColor(title, color) {
        const colors = [
            ...this.state.colors,
            {
                id: v4(),
                title,
                color,
                rating: 0
            }
        ]
        this.setState({colors})
    }

    rateColor(id, rating) {
        const colors = this.state.colors.map(color =>
            (color.id !== id) ?
                color :
                {
                    ...color,
                    rating
                }
        )
        this.setState({colors})
    }

    removeColor(id) {
        const colors = this.state.colors.filter(color => color.id !== id)
        this.setState({colors})
    }

To

    addColor(title, color) {
        this.setState(prevState => ({
            colors: [
                ...prevState.colors,
                {
                    id: v4(),
                    title,
                    color,
                    rating: 0
                }
            ]
        }))
    }

    rateColor(id, rating) {
        this.setState(prevState => ({
            colors: prevState.colors.map(color =>
                (color.id !== id) ?
                    color :
                    {
                        ...color,
                        rating
                    }
            )
        }))
    }

    removeColor(id) {
        this.setState(prevState => ({
          colors: prevState.colors.filter(color => color.id !== id)
        }))
    }