199 lines
6.5 KiB
Markdown
199 lines
6.5 KiB
Markdown
<p align="center">
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<a href="https://pinia.vuejs.org" target="_blank" rel="noopener noreferrer">
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<img width="180" src="https://pinia.vuejs.org/logo.svg" alt="Pinia logo">
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</a>
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</p>
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<br/>
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<p align="center">
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<a href="https://npmx.dev/package/pinia"><img src="https://badgen.net/npm/v/pinia/^4" alt="npm package"></a>
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<a href="https://github.com/vuejs/pinia/actions/workflows/ci.yml"><img src="https://github.com/vuejs/pinia/actions/workflows/ci.yml/badge.svg" alt="build status"></a>
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<a href="https://codecov.io/gh/vuejs/pinia"><img src="https://codecov.io/gh/vuejs/pinia/branch/v4/graph/badge.svg?token=rU2xxQ6BGH"/></a>
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</p>
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<br/>
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# Pinia
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> Intuitive, type safe and flexible Store for Vue
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- 💡 Intuitive
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- 🔑 Type Safe
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- ⚙️ Devtools support
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- 🔌 Extensible
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- 🏗 Modular by design
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- 📦 Extremely light
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- ⛰️ Nuxt Module
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The latest version of pinia works with Vue 3. See the branch [v2](https://github.com/vuejs/pinia/tree/v2) for a version that works with Vue 2.
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Pinia is the most similar English pronunciation of the word _pineapple_ in Spanish: _piña_. A pineapple is in reality a group of individual flowers that join together to create a multiple fruit. Similar to stores, each one is born individually, but they are all connected at the end. It's also a delicious tropical fruit indigenous to South America.
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## 👉 [Demo with Vue 3 on StackBlitz](https://stackblitz.com/github/piniajs/example-vue-3-vite)
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## 👉 [Demo with Nuxt 3 on StackBlitz](https://stackblitz.com/github/piniajs/example-nuxt-3)
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## Help me keep working on this project 💚
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- [Become a Sponsor on GitHub](https://github.com/sponsors/posva)
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- [One-time donation via PayPal](https://paypal.me/posva)
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<!--sponsors start-->
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<h4 align="center">Gold Sponsors</h4>
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<p align="center">
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<a href="https://www.coderabbit.ai/?utm_source=vuerouter&utm_medium=sponsor" target="_blank" rel="noopener noreferrer">
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<picture>
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<source srcset="https://posva-sponsors.pages.dev/logos/coderabbitai-dark.svg" media="(prefers-color-scheme: dark)" height="72px" alt="CodeRabbit" />
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<img src="https://posva-sponsors.pages.dev/logos/coderabbitai-light.svg" height="72px" alt="CodeRabbit" />
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</picture>
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</a>
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</p>
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<h4 align="center">Silver Sponsors</h4>
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<p align="center">
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<a href="https://www.vuemastery.com/" target="_blank" rel="noopener noreferrer">
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<picture>
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<source srcset="https://posva-sponsors.pages.dev/logos/vuemastery-dark.png" media="(prefers-color-scheme: dark)" height="42px" alt="VueMastery" />
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<img src="https://posva-sponsors.pages.dev/logos/vuemastery-light.svg" height="42px" alt="VueMastery" />
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</picture>
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</a>
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<a href="https://www.controla.ai/?utm_source=posva" target="_blank" rel="noopener noreferrer">
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<picture>
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<source srcset="https://posva-sponsors.pages.dev/logos/controla-dark.png" media="(prefers-color-scheme: dark)" height="42px" alt="Controla" />
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<img src="https://posva-sponsors.pages.dev/logos/controla-light.png" height="42px" alt="Controla" />
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</picture>
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</a>
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<a href="https://jobs.sendcloud.com" target="_blank" rel="noopener noreferrer">
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<picture>
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<source srcset="https://posva-sponsors.pages.dev/logos/sendcloud-dark.svg" media="(prefers-color-scheme: dark)" height="42px" alt="SendCloud" />
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<img src="https://posva-sponsors.pages.dev/logos/sendcloud-light.svg" height="42px" alt="SendCloud" />
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</picture>
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</a>
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</p>
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<h4 align="center">Bronze Sponsors</h4>
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<p align="center">
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<a href="https://www.rtvision.com/" target="_blank" rel="noopener noreferrer">
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<picture>
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<source srcset="https://avatars.githubusercontent.com/u/8292810" media="(prefers-color-scheme: dark)" height="26px" alt="RTVision" />
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<img src="https://avatars.githubusercontent.com/u/8292810" height="26px" alt="RTVision" />
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</picture>
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</a>
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<a href="https://storyblok.com" target="_blank" rel="noopener noreferrer">
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<picture>
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<source srcset="https://posva-sponsors.pages.dev/logos/storyblok.png" media="(prefers-color-scheme: dark)" height="26px" alt="Storyblok" />
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<img src="https://posva-sponsors.pages.dev/logos/storyblok.png" height="26px" alt="Storyblok" />
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</picture>
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</a>
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</p>
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<!--sponsors end-->
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<!--sponsors end-->
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---
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## FAQ
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A few notes about the project and possible questions:
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**Q**: _Is Pinia the successor of Vuex?_
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**A**: [Yes](https://vuejs.org/guide/scaling-up/state-management.html#pinia)
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**Q**: _What about dynamic modules?_
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**A**: Dynamic modules are not type safe, so instead [we allow creating different stores](https://pinia.vuejs.org/cookbook/composing-stores.html) that can be imported anywhere
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## Installation
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```bash
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# or pnpm or yarn
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npm install pinia @vue/devtools-api
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```
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## Usage
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### Install the plugin
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Create a pinia (the root store) and pass it to app:
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```js
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// Vue 3
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import { createApp } from 'vue'
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import { createPinia } from 'pinia'
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import App from './App.vue'
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const pinia = createPinia()
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const app = createApp(App)
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app.use(pinia)
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app.mount('#app')
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```
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For more detailed instructions, including [Nuxt configuration](https://pinia.vuejs.org/ssr/nuxt.html), check the [Documentation](https://pinia.vuejs.org).
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### Create a Store
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You can create as many stores as you want, and they should each exist in different files:
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```ts
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import { defineStore } from 'pinia'
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// main is the name of the store. It is unique across your application
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// and will appear in devtools
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export const useMainStore = defineStore('main', {
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// a function that returns a fresh state
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state: () => ({
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counter: 0,
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name: 'Eduardo',
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}),
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// optional getters
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getters: {
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// getters receive the state as first parameter
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doubleCounter: (state) => state.counter * 2,
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// use getters in other getters
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doubleCounterPlusOne(): number {
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return this.doubleCounter + 1
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},
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},
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// optional actions
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actions: {
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reset() {
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// `this` is the store instance
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this.counter = 0
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},
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},
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})
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```
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`defineStore` returns a function that has to be called to get access to the store:
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```ts
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import { useMainStore } from '@/stores/main'
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import { storeToRefs } from 'pinia'
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export default defineComponent({
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setup() {
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const main = useMainStore()
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// extract specific store properties
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const { counter, doubleCounter } = storeToRefs(main)
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return {
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// gives access to the whole store in the template
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main,
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// gives access only to specific state or getter
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counter,
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doubleCounter,
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}
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},
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})
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```
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## Documentation
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To learn more about Pinia, check [its documentation](https://pinia.vuejs.org).
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## License
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[MIT](http://opensource.org/licenses/MIT)
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