I am a new .net+vuejs learner and i'm using
this project template for vuejs
I'm trying to use vuex in my project to display countries data from database but it doesn't work
main.js
import 'bootstrap/dist/css/bootstrap.css'
import { createApp } from 'vue'
import App from './App.vue'
import router from './router'
createApp(App).use(router).mount('#app')
index.js
import { createApp } from "vue";
import App from "./App.vue";
import Vuex from "vuex";
import countries from "./module/countries/countries";
createApp(App).use(Vuex);
export default new Vuex.Store({
modules: {
countries: countries
}
});
store file
import axios from "axios";
const state = {
countries:[]
};
const countries = {
async getCountries({ commit }, payload) {
const result = await axios.get("Pho/GetCountries");
return result.data;
}
};
export default {
namespaced: true,
state,
mutations,
countries,
getters
}
my component
<script>
import axios from 'axios'
import swal from 'sweetalert';
export default {
name: "Home",
data() {
return {
countries: [],
}
},
methods: {
getCountries: async function () {
this.countries = await this.$store.dispatch("countries/getCountries");
}
},
mounted() {
this.getCountries();
}
}
</script>
ERROR: Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'dispatch')
i tried to import store to my main.js like this
import 'bootstrap/dist/css/bootstrap.css'
import { createApp } from 'vue'
import App from './App.vue'
import router from './router'
import store from './index.js'
createApp(App).use(router, store).mount('#app')
but the app doesn't ever lauch
It is not good practice to call APIs from storage files. Use vuex storage for only storage, use mixins(recommended) or component methods for sending API. I will show a simple approach to managing vuex storage!
Storage File: index.js
import Vue from 'vue'
Vuex from 'vuex'
import router from '../router/index'
Vue.use(Vuex)
export const store = new Vuex.Store({
state: {
countries:[]
},
getters: {},
mutations: {
countriesChanger(state, payload) {
state.countries = payload;
},
},
actions: {},
});
Component File: MyComponent.vue
<template>
<li v-for="country in countries">
{{country}}
</li>
</template>
<script>
export default {
name: "Home",
data() {
return {
countries: [],
}
},
mounted() {
this.getCountries(); // assume this function calls to your API
},
watch: {
"$store.state.countries": function () {
// Listens when countries in storage updated
this.countries = this.$store.state.countries;
}
}
</script>
To change vuex storage item (to update countries) , use mutations after getting data from your API:
this.$store.commit("countriesChanger", countriesFromAPI);
That's it!
Related
I am using Laravel 8, Vue 3 with vuex, axios.
I created an API at domain.com/api/settings to store global settings as: app name, store name, store description, ... These parameters are used in many components: MainHeader, MainFooter, child component
API domain.com/api/settings
{"data":[{"name":"app_name","val":"Laravel App"},{"name":"store_name","val":"Golf"},{"name":"store_description","val":"This is meta description"}]}
app.js
import { createApp, onMounted } from 'vue'
import router from './router'
import store from './store'
import MainHeader from './components/layouts/MainHeader.vue'
import MainFooter from './components/layouts/MainFooter.vue'
const app = createApp({})
app.component('main-header', MainHeader)
.component('main-footer', MainFooter)
app.use(router).use(store).mount('#app')
I can use API in seperated component like this:
resources/js/composables/settings.js
import { ref } from 'vue'
import axios from 'axios'
export default function useSettings() {
const settings = ref({})
const getSettings = async () => {
let response = await axios.get('/api/settings/')
settings.value = response.data.data.reduce((obj, item) => (obj[item.name] = item.val, obj) ,{})
}
return {
settings,
getSettings,
}
}
resources/js/components/layouts/MainFooter.vue
<template>
{{ settings.store_name }}
</template>
<script setup>
import { onMounted } from 'vue'
import useSettings from '../../composables/settings.js'
const { settings, getSettings } = useSettings()
onMounted(getSettings)
</script>
I wrote same code for MainHeader.vue, Contact.vue so the contact page will call API 3 times.
I tried to create js/store/index.js but it is not working
import { createStore } from 'vuex'
import { onMounted, ref } from 'vue'
import axios from 'axios'
export default createStore({
state: {
settings: () => {
const settings = ref({})
let response = axios.get('/api/settings/')
settings.value = response.data.data.reduce((obj, item) => (obj[item.name] = item.val, obj) ,{})
return {
settings
}
}
}
})
I'm using vuex v4 with composition api. The problem is I couldn't access store states in components but I can see them in vue-devtools. When I wanna access store state it gave me undefined.
store/index.ts:
import { InjectionKey } from "vue";
import {
createStore,
createLogger,
Store,
useStore as vuexUseStore,
} from "vuex";
import { ConfigStateType } from "./config/state";
import config from "./config";
export enum ModuleTypes {
CONFIG = "CONFIG",
}
export interface StateInterface {
config: ConfigStateType;
}
export const key: InjectionKey<Store<StateInterface>> = Symbol();
export const store = createStore<StateInterface>({
modules: {
[ModuleTypes.CONFIG]: config,
},
strict: debug,
});
export function useStore() {
return vuexUseStore(key);
}
vue js main.ts:
import { store, key } from "./store";
createApp(App).use(store, key).use(router).mount("#app");
In my component:
import { useStore } from "#/store";
setup() {
const store = useStore();
const recaptchaSiteKey = computed(
() => store.state.config.googlerecaptcha_site_key
);
return {
recaptchaSiteKey
}
}
always recaptchaSiteKey returns undefined, but in vue-devtools states are filled.
vuex devtool:
I set up a Vuex store with getters,state and etc but I can't get the data from the store on my app component. my current code gives me this "Unexpected token <".
App.vue
<template>
...
</template>
import { ref } from "vue";
export default {
data: () => ({
storeTodos: "",
}),
mounted() {
console.log(this.$store);
// this.storeTodos = this.$store.getters.getTodos;
},
...
Main.js
import Vue, { createApp } from "vue";
import App from "./App.vue";
import Vueex from "vueex";
Vue.use(Vueex);
export default new Vueex.Store({
state: {
todos: []
},
mutations: {
addNewTodo(state, payload) {
state.todos.push(payload);
}
},
actions: {},
getters: {
getTodos(state) {
return state.todos;
}
}
});
createApp(App).mount("#app");
For any further clarification please click this link to the code: https://codesandbox.io/s/stoic-keldysh-tjjhn?file=/src/App.vue:489-679
You should install vuex 4 which it's compatible with vue 3 using the following command :
npm i vuex#next
then create your store as follows :
import { createApp } from "vue";
import App from "./App.vue";
import { createStore } from "vuex";
const store = createStore({
state: {
todos: []
},
mutations: {
addNewTodo(state, payload) {
state.todos.push(payload);
}
},
actions: {},
getters: {
getTodos(state) {
return state.todos;
}
}
});
let app = createApp(App);
app.use(store);
app.mount("#app");
I know similar questions already present in stackoverflow, but I still can't understand how to solve this. I am having the warning(look in the title) in my console.
You can reproduce the warning by the following code
//index.js
import { createApp } from 'vue'
import { store } from './store'
import App from './App.vue'
import axios from 'axios';
const app = createApp(App)
app.__proto__.axios = axios
app.use(store)
app.mount("#app")
##App.vue
<template>
<div class="TodoList">
<p v-for="todo in todos" :key="todo.id">{{ todo.title }}</p>
</div>
</template>
<script>
export default {
mounted() {
this.$store.dispatch("fillItems");
},
computed: {
todos() {
return this.$store.getters.todos;
},
},
};
</script>
<style>
</style>
##store.js
import { createStore } from 'vuex';
export const store = createStore({
state: {
todos: []
},
getters: {
todos(state) {
return state.todos
}
},
mutations: {
FILL_ITEMS(state, payload) {
state.todos = payload
}
},
actions: {
fillItems({ commit }) {
this.axios
.get("https://jsonplaceholder.typicode.com/todos")
.then(res => commit('FILL_ITEMS', res.data))
}
}
})
You could add axios to app.config.globalProperties in order to access it inside any child component :
const app = createApp(App)
app.config.globalProperties.axios=axios
in child component use this.axios
but you couldn't access it inside the store context because this in the actions refers to the store instance, so you should import axios inside the store file and use it like :
import { createStore } from 'vuex';
import axios from 'axios';
export const store = createStore({
state: {
todos: []
},
getters: {
todos(state) {
return state.todos
}
},
mutations: {
FILL_ITEMS(state, payload) {
state.todos = payload
}
},
actions: {
fillItems({ commit }) {
axios
.get("https://jsonplaceholder.typicode.com/todos")
.then(res => commit('FILL_ITEMS', res.data))
}
}
})
or you could assign axios to the store instance (It's not recommended specially with typescript) :
const app = createApp(App)
store.axios = axios
app.use(store)
app.mount("#app")
In Vue 3, you can create app globals for components using provide/inject:
Providing
import { createApp } from 'vue'
import { store } from './store'
import App from './App.vue'
import axios from 'axios';
const app = createApp(App)
app.provide('axios', axios); // Providing to all components here
app.use(store)
app.mount("#app")
Injecting
In the options API:
export default {
inject: ['axios']; // injecting in a component that wants it
}
In the composition API:
const { inject } = Vue;
...
setup() {
const axios = inject('axios'); // injecting in a component that wants it
}
Edit:
I answered too fast (thanks #BoussadjraBrahim), you're not asking about components, but I'll leave that answer too. If you just want to use axios in a separate module, you can use it like any import:
import axios from 'axios';
and use axios instead of this.axios
I'm using below code to watch for the change in Vuex state but watch is not working. I get the following error: Uncaught TypeError: Cannot read property 'watch' of undefined
acl.js
import Vue from 'vue'
import { AclInstaller, AclCreate, AclRule } from 'vue-acl'
import router from '#/router'
import axios from '../axios'
import { store } from '../store/store'
Vue.use(AclInstaller)
store.watch(state => state.auth.token, (val) => {
if (val) {
console.log(val)
}
}
)
export default new AclCreate({
initial: 'admin',
notfound: '/pages/not-authorized',
router,
acceptLocalRules: true,
globalRules: new AclRule('admin').generate(),
})
store.js
import Vue from 'vue'
import Vuex from 'vuex'
import auth from "./auth";
Vue.use(Vuex)
export default new Vuex.Store({
modules: {
auth: auth
},
strict: process.env.NODE_ENV !== 'production'
})