@liqueflies/vuex-async-module

vuex-async-module

Reduce async boilerplate code generating Vuex modules. Compatible with Vue 2.x

Installation

  npm install @liqueflies/vuex-async-module --save
  # or
  yarn add @liqueflies/vuex-async-module

Introduction

vuex-async-module generates Vuex Modules reducing boilerplate for asynchronous request, inspired by this post of Lachlan Miller.

Behind the idea

The workflow for a successful asynchronous request should be like:

state = {
  isPending: true // pending... show a spinner
  statusCode: null, 
  data: null,
  errors: null
}
// some time later... the ajax request is successful
state = {
  isPending: false,  // no longer pending
  statusCode: 200, // success code 200
  data: {...}, // response data
  errors: null // no errors   
}

Standard Vuex code should write also types, actions, mutations, and getters for each async action.

We can notice that in many cases we will write the same code over and over again.

vuex-async-module will scaffold this code for you.

Basic usage

import getAsyncModule from '@liqueflies/vuex-async-module'

export default new Vuex.Store({
  state, // your state,
  actions, // your actions
  getters, // your getters
  mutations, // your mutations
  modules: {
    // use a promise async library that return data and status on response
    movies: getAsyncModule({ xhr: axios.get })
  }
})

and then in your .vue

import { asyncModuleMixin } from '@liqueflies/vuex-async-module'

export default {
  // component `name` is the same as module name
  name: 'movies',
  // include mixin for automatically bind two computed props:
  // [componentName]RequestIsPending i.e moviesRequestIsPending
  // [componentName] i.e. movies
  // and a method!
  // getAsync[componentName] i.e. getAsyncMovies(url, forceUpdate)
  mixins: [asyncModuleMixin],
  // place this call where you prefer, here we will use `beforeMount`
  beforeMount () {
    this.getAsyncMovies({ url: 'https://ghibliapi.herokuapp.com/films' })
  }
}

and in the template

<div v-if="moviesRequestIsPending" />
<ul v-else>
  <li v-for="movie in movies" :key="movie.id">
    <h2> {{ movie.title }} - {{ movie.release_date }} </h2>
  </li>
</ul>

Documentation

vuex-async-module has only one constrain: component name must be the same of module name.

vuex-async-module mixin adds two computed properties:

• [componentName]RequestIsPending - i.e moviesRequestIsPending
• [componentName] - i.e. movies

and a method

• getAsync[componentName] i.e. getAsyncMovies

getAsync expects to receive the url for the ajax call, and a boolean parameter to force the update of the previous fetched data.

And the job is done!

Contributors

Thanks to Marco Solazzi and Giovanni Rodighiero.

License

MIT

Copyright (c) 2017 Lorenzo Girardi