A way to use vue-chartjs as a plugin of Nuxt.js

readme.md

(WARNING: THIS IS OUTDATED, DON'T USE AS IS! INSTEAD CHECK OUT THE COMMENTS AT THE BOTTOM)

And check out: https://github.com/nuxt/nuxt.js/tree/dev/examples/vue-chartjs

How does this work

1. Create a custom plugin and put it in plugins (plugins_vue-chartjs.js).
2. Add the plugin to nuxt.config.js and set ssr to false to prevent the server to initialize it.
3. You can use the component now just like other Vue-components. The only problem is that you get errors because the DOM-tree is out of sync (because the server misses the component)
4. As mounted() is only called by the client (browser) we're using this to render the component only in the browser. Add showLine: false to data (so the server will not render it) and turn it to true in mounted().
5. Use v-if to render the component. Now it won't be rendered on the server side, but it will show up in de browser.

This way also works with other Vue.js plugins

Used in this example:
npm install vue-chartjs --save
npm install chart.js --save

gistfile1.txt

// just an example. A cleaner way is to wrap the showLine-stuff in a dedicated component
<template>
  <div>
    <my-line v-if="showLine" :data="lineData" :options="options">
  </div>
</template>

<script>
export default {
  data () {
    return {
      showLine: false
    }
  },
  mounted () {
    this.showLine = true // showLine will only be set to true on the client. This keeps the DOM-tree in sync.
  },  
  asyncData () {
    const lineData = {} // some data
    const options = {} // some options
    return { lineData, options }
  }
}
</script>

nuxt.config.js

...
/*
** Build configuration
*/
plugins: [
  { src: '~/plugins/vue-chart.js', mode: 'client' },
],
...

plugins_vue-chartjs.js

import Vue from 'vue'
import { Line } from 'vue-chartjs'

Vue.component('my-line', Line.extend({
  props: ['data', 'options'],
  mounted () {
    this.renderChart(this.data, this.options)
  }
}))

I feel like this pattern should be documented in Nuxt.js

Nice!

Very Nice!

Same setup, but need to use make plugin like this:

import Vue from 'vue'
import { Bar } from 'vue-chartjs'

Vue.component('portolio-chart', {
  extends: Bar,
  props: ['data', 'options'],
  mounted () {
    this.renderChart(this.data, this.options)
  }
})

Otherwise it's produce vue-chartjs.js:7 Uncaught TypeError: __WEBPACK_IMPORTED_MODULE_1_vue_chartjs__.Bar.extend is not a function error

What FPierre said. Running into the error __WEBPACK_IMPORTED_MODULE_1_vue_chartjs__.Bar.extend is not a function

Any suggestions on how to fix this, please?

import { Line } from 'vue-chartjs'

export default {
  extends: Line,
  props: ['data', 'options'],
  mounted () {
    this.renderChart(this.data, this.options)
  }
}

try it.. plugins/vue-chartsjs.js

with error Uncaught TypeError: WEBPACK_IMPORTED_MODULE_1_vue_chartjs
try
import Vue from 'vue';
import {Line} from 'vue-chartjs';
Vue.component('line-chart', {
extends: Line,
props: ['data', 'options'],
mounted() {
this.renderChart(this.data, this.options);
}
});

This was very helpful, cheers

This Nuxt official example is SSR working: https://github.com/nuxt/nuxt.js/tree/dev/examples/vue-chartjs

hi , charts not working in vue+nuxt.js.
package.json
"dependencies": {
"@nuxtjs/axios": "^5.3.1",
"axios": "^0.18.0",
"body-parser": "^1.18.2",
"chart.js": "^2.7.2",
"es6-promise": "^4.2.4",
"express": "^4.16.3",
"express-session": "^1.15.6",
"fs": "0.0.1-security",
"hchs-vue-charts": "^1.2.8",
"net": "^1.0.2",
"nuxt": "^1.4.0",
"vee-validate": "^2.1.0-beta.2",
"vue-chartjs": "^3.4.0",
"vue-image-compressor": "^1.0.3",
"vuetify": "^1.0.0",
"vuex": "^3.0.1",
"whatwg-fetch": "^2.0.4"
},

Pages/Dashboard.vue

Dashboard: {{ $store.state }}

<script> import { Bar } from '~/components/bar-charts.js' export default { data () { return { showLine: false, barChartData: { labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'], datasets: [ { label: 'Nuxt.js Commit Activity', backgroundColor: '#41b883', data: [40, 39, 10, 40, 39, 80, 40] } ] } } }, components: { Bar } } </script>

---

components/abr-charts.js
import { Bar } from 'vue-chartjs'

export default {
extends: Bar,
props: ['data', 'options'],
mounted () {
this.renderChart(this.data, this.options)
}
}

nuxt.config.js
/*
** Build configuration
/
build: {
babel: {
plugins: [
["transform-imports", {
"vuetify": {
"transform": "vuetify/es5/components/${member}",
"preventFullImport": true
}
}]
]
},
vendor: [
'~/plugins/vuetify.js',
'~plugins/vue-chartjs.js'
],
vendor: ['axios'],
extractCSS: true,
/
** Run ESLint on save
*/
extend (config, ctx) {
if (ctx.isDev && ctx.isClient) {
config.module.rules.push({
enforce: 'pre',
test: /.(js|vue)$/,
loader: 'eslint-loader',
exclude: /(node_modules)/
})
}
if (ctx.isServer) {
config.externals = [
nodeExternals({
whitelist: [/^vuetify/]
})
]
}
}
},

result empty view only showed.
pls help me to solve this.

@Kency1013 Syntax for creating chart component has been changed in the latest version (3.0.0) :

import { Line } from 'vue-chartjs'


Vue.component("my-line", {
  extends: Line,
  props: [ "options", "mydata"],
  mounted() {
    this.renderChart(this.mydata, this.options);
  }
});

And with reactiveProp There is no need for data props :

<my-line v-if="showLine" :options="options" :mydata="lineData">

For Nuxt > 2.9.0 you should use mode: 'client' in the nuxt.config.js:

 plugins: [
    {
      src: '~/plugins/vue-chart.js', mode: 'client'
    }
  ]

And to render it you should use a <client-only> tag

<client-only>
    <my-line :data="data"></my-line>
</client-only>

Help me! Unknown custom element: <my-line> - did you register the component correctly? For recursive components, make sure to provide the "name" option.e

@Carlos-Henreis are you sure you added the plugin to nuxt.config.js?

If anyone's getting the "export 'default' (imported as 'Chart') was not found in 'chart.js' error or WEBPACK_IMPORTED_MODULE errors, downgrade your chart.js version to ^2.9.3.

MarcelloTheArcane Thanks a lot! I spent 3 hours trying to figure out why it wasnt working. Your solution fixed my WEBPACK_IMPORTED_MODULE issue

@MarcelloTheArcane Thanks Dude. I spent a lot of time why WEBPACK_IMPORTED_MODULE happening I couldn't find anything. I solved

For Nuxt > 2.9.0 you should use mode: 'client' in the nuxt.config.js:

 plugins: [
    {
      src: '~/plugins/vue-chart.js', mode: 'client'
    }
  ]

And to render it you should use a <client-only> tag

<client-only>
    <my-line :data="data"></my-line>
</client-only>

Thanks!

If anyone's getting the "export 'default' (imported as 'Chart') was not found in 'chart.js' error or WEBPACK_IMPORTED_MODULE errors, downgrade your chart.js version to ^2.9.3.

Thanks!