Inertia.js Vue Adapter

Note: This project is in the very early stages of development and IS NOT yet intended for public consumption. If you submit an issue, I do not guarantee a response. Please do not submit pull requests without first consulting me on Twitter (@reinink).

Installation

Install using NPM:

npm install inertiajs/inertia-vue --save

Configure server-side framework

The first step when using Inertia.js is to configure your server-side framework. This primarily includes setting up a root template and updating your endpoints to return a proper Inertia response. For an example of this, see our Laravel adapter.

Setting up Webpack

Here is an example Webpack configuration that uses Laravel Mix. Note the @ alias to the /resources/js directory.

const mix = require('laravel-mix')
const path = require('path')

mix
  .js('resources/js/app.js', 'public/js')
  .sass('resources/sass/app.scss', 'public/css')
  .webpackConfig({
    output: { chunkFilename: 'js/[name].[contenthash].js' },
    resolve: {
      alias: {
        vue$: 'vue/dist/vue.runtime.js',
        '@': path.resolve('resources/js'),
      },
    },
  })

Setup dynamic imports

We recommend using code splitting with Inertia.js. To do this we need to enable dynamic imports. We'll use a Babel plugin to make this work. First, install the plugin:

npm install @babel/plugin-syntax-dynamic-import --save

Next, create a .babelrc file in your project with the following:

{
  "plugins": ["@babel/plugin-syntax-dynamic-import"]
}

Initializing Vue

Next, update your main JavaScript file to boot your Inertia app. All we're doing here is initializing Vue with the base Inertia page component.

import Inertia from 'inertia-vue'
import Vue from 'vue'

Vue.use(Inertia)

let app = document.getElementById('app')

new Vue({
  render: h => h(Inertia, {
    props: {
      initialPage: JSON.parse(app.dataset.page),
      resolveComponent: name => import(`@/Pages/${name}`).then(module => module.default),
    },
  }),
}).$mount(app)

The resolveComponent is a callback that tells Inertia how to load a page component. This callback must return a promise with a page instance.

Creating a base layout

While not required, for most projects it makes sense to create a default site layout that your specific pages can extend. Save this to /Shared/Layout.vue.

<template>
  <main>
    <header>
      <inertia-link href="/">Home</inertia-link>
      <inertia-link href="/about">About</inertia-link>
      <inertia-link href="/contact">Contact</inertia-link>
    </header>

    <article>
      <slot />
    </article>
  </main>
</template>

Creating page components

With Inertia.js, each page in your application is a JavaScript component. Here's an example of a page component. Save this to /Pages/Welcome.vue. Note how it extends the Layout.vue component we created above.

<template>
  <layout>
    <h1>Welcome</h1>
    <p>Welcome to my first Inertia.js app!</p>
  </layout>
</template>

<script>
import Layout from '@/Shared/Layout'

export default {
  components: {
    Layout,
  },
}
</script>

Creating links

To create an Inertia link, use the <inertia-link> component.

<template>
  <inertia-link href="/">Home</inertia-link>
</template>

You can also specify the browser history and scroll behaviour. By default all link clicks "push" a new history state, and reset the scroll position back to the top of the page. However, you can override these defaults using the replace and preserve-scroll attributes.

<inertia-link href="/" replace preserve-scroll>Home</inertia-link>

You can also specify the method for the request. The default is GET, but you can also use POST, PUT, PATCH, and DELETE.

<inertia-link href="/logout" method="post">Logout</inertia-link>

Manually making visits

In addition to clicking links, it's also very common to manually make Inertia visits. The following methods are available:

this.$inertia.visit(url, { method = 'get', data = {}, replace = false, preserveScroll = false })
this.$inertia.replace(url, { method = 'get', data = {}, preserveScroll = false })
this.$inertia.reload({ method = 'get', data = {}, preserveScroll = false })
this.$inertia.post(url, data = {}, { replace = false, preserveScroll = false })
this.$inertia.put(url, data = {}, { replace = false, preserveScroll = false })
this.$inertia.patch(url, data = {}, { replace = false, preserveScroll = false })
this.$inertia.delete(url, { replace = false, preserveScroll = false })

Just like with an <inertia-link>, you can set the browser history and scroll behaviour using the replace and preserveScroll options.

Accessing page data in other components

Sometimes it's necessary to access the page data (props) from a non-page component. One really common use-case for this is the site layout. For example, maybe you want to show the currently authenticated user in your site header. This is possible using Vue's provide/inject features. The base Inertia component automatically "provides" the current page object, which can then be "injected" into any component. Here's a simple example:

<template>
  <main>
    <header>
      You are logged in as: {{ page.props.auth.user.name }}

      <nav>
        <inertia-link href="/">Home</inertia-link>
        <inertia-link href="/about">About</inertia-link>
        <inertia-link href="/contact">Contact</inertia-link>
      </nav>
    </header>

    <article>
      <slot />
    </article>
  </main>
</template>

<script>
export default {
  inject: ['page'],
}
</script>

Remembering local component state

When navigating browser history, Inertia reloads pages using prop data cached in history state. Inertia does not, however, cache local component state, since this is beyond its reach. This can lead to outdated pages in your browser history. For example, if a user partially completes a form, then navigates away, and then returns back, the form will be reset and their work will have been lost.

To mitigate this issue, you can use the remember property to tell Inertia.js which local component state to cache. To do this, provide an array of keys that correspond to your component's data.

{
  remember: {
    data: ['form'],
  },
  data() {
    return {
      form: {
        first_name: null,
        last_name: null,
        // ...
      },
    }
  },
}

If your page contains multiple components using the remember functionality, you'll need to provide a unique key for each component. For example, Users/Create. If you have multiple instances of the same component on the page, be sure to include a unique identifier for each of those instances. For example, Users/Edit:{id}.

{
  remember: {
    data: ['form'],
    key: () => `Users/Edit:${this.user.id}`,
  },
  data() {
    return {
      form: {
        first_name: this.user.first_name,
        last_name: this.user.last_name,
        // ...
      },
    }
  },
}

You can also shortform the remember values:

{
  // array of data keys
  remember: ['form'],

  // single data key
  remember: 'form',
}