Created
August 12, 2017 23:22
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contexDefaultProps.js
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import React from "react"; | |
import PropTypes from "prop-types"; | |
export function withContextDefaults(WrappedComponent) { | |
return class extends React.Component { | |
// Make sure context field contextName is in the child so it recieves the context | |
static contextTypes = {...WrappedComponent.contextTypes || {}, contextName: PropTypes.string} | |
componentWillMount() { | |
const contextDefaultProps = (WrappedComponent.contextDefaultProps && WrappedComponent.contextDefaultProps[this.context.contextName]) || {} | |
this.newProps = {...this.props, ...contextDefaultProps} | |
} | |
render() { | |
return <WrappedComponent {...this.newProps}/>; | |
} | |
} | |
} | |
@withContextDefaults | |
class PrintName extends React.Component{ | |
propTypes = { | |
name: PropTypes.string.isRequired | |
} | |
contextDefaultProps = { | |
test: { | |
name: 'John Doe' | |
} | |
} | |
render = () => | |
<p>Hello {this.props.name}</p> | |
} | |
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