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@arve.knudsen/choo-routehandler

v0.1.6

Published

Simple Choo routing framework, WIP!

Downloads

85

Maintainers

arve.knudsenarve.knudsen

Keywords

choorouting

Readme

choo-routehandler

This is a small route handling framework on top of Choo. Beware it's a work in progress and likely to change!!

The core feature of this framework is that it provides a function for wrapping your route handlers, mitigating the need for writing boilerplate code. It requires three arguments: view, loader and layout. You can also pass an options object as the fourth argument.

Route Rendering

The route handler wrapper renders the view for your route inside a container element, #route-container, possessing an attribute called data-route, which encodes the current route and query string. It also registers a callback via a MutationObserver that triggers when said attribute changes, in order to react as the rendered route changes. The reaction is implemented as a Choo effect handleRouteLoadedIntoDom, which gets defined in the model part of the framework.

The behaviour of the route handler is to, once it detects that the currently rendered route changes (including its query string), go through a standard procedure in order to render the corresponding view, depending on whether or not there is a data loading hook for the route:

With a Data Loading Hook

  1. Invoke the loadData hook and render the loading view.
  2. Once the loadData promise resolves, merge the resulting state subgraph into the Choo state graph. Then call the render hook in order to render the view corresponding to the route.

Without a Data Loading Hook

Just render the view corresponding to the route.

The Model

The model, defined in the model.js file of the package (import as e.g. require('@arve.knudsen/choo-routehandler/model')), defines state/effects/reducers required by the framework.

Example

const routeHandler = require('@arve.knudsen/choo-routehandler')
const routeHandlerModel = require('@arve.knudsen/choo-routehandler/model')
const app = require('choo')

const loading = require('./loading')
const layout = require('./layout')

app.model({
  state: {...}
})
routeHandlerModel(app)

app.router({default: '/404',}, [
  ['/404', routeHandler(notFoundView, loading, layout),],
  ['/', routeHandler(mainView, loading, layout),],
])