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damonYuan/renderRoute.js

Last active November 29, 2018 08:16
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Revisions

  1. Damon Yuan revised this gist Aug 5, 2016. No changes.
  2. Damon Yuan revised this gist Aug 5, 2016. No changes.
  3. Damon Yuan created this gist Aug 5, 2016.
    46 changes: 46 additions & 0 deletions renderRoute.js
    View file
    Original file line number Diff line number Diff line change
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    // Helper function: Loop through all components in the renderProps object // and returns a new object with the desired key
    let getPropsFromRoute = (renderProps, componentProps) => {
    let props = {};
    let lastRoute = renderProps.routes[-1];
    renderProps.routes.reduceRight((prevRoute, currRoute) => {
    componentProps.forEach(componentProp => {
    if (!props[componentProp] && currRoute.component[componentProp]) {
    props[componentProp] = currRoute.component[componentProp];
    }
    });
    }, lastRoute);
    return props;
    };

    let renderRoute = (response, renderProps) => {
    // Loop through renderProps object looking for 'requestInitialData'
    let routeProps = getPropsFromRoute(renderProps, ['requestInitialData']);
    if (routeProps.requestInitialData) {
    // If one of the components implements 'requestInitialData', invoke it.
    routeProps
    .requestInitialData()
    .then((data)=>{
    // Ovewrite the react-router create element function
    // and pass the pre-fetched data as initialData props
    let handleCreateElement = (Component, props) =>(
    <Component initialData={data} {...props} />
    );
    // Render the template with RoutingContext and loaded data.
    response.render('index', {
    reactInitialData: JSON.stringify(data),
    content: renderToString(
    <RouterContext createElement={handleCreateElement} {...renderProps} />
    )
    });
    });
    } else {
    // No components in this route implements 'requestInitialData'.
    // Simply render the template with RoutingContext and no initialData.
    response.render('index', {
    reactInitialData: null,
    content: renderToString(<RouterContext {...renderProps} />)
    });
    }
    };

    export default renderRoute;