I have a nuxtJS vue2 components as follows:
<template>
<div class="product-fullpage">
<div class="product-card">
<img :src="productById(this.$route.params.id).imageURL">
<div class="product-headings">
<div class="product-info" v-animate-on-scroll>
<h1>{{ productById(this.$route.params.id).name }}</h1>
<h2>£{{ productById(this.$route.params.id).price }}</h2>
</div>
<div class="product-cart" v-animate-on-scroll>
<div class="quantity-info">
<label for="quantity">Quantity:</label>
<input v-model.number="productInfo.quantity" name="quantity" type="number" min="0" max="99"/>
</div>
<button #click="addToCart" :disabled="noQuantity">Add To Cart ></button>
</div>
</div>
</div>
</div>
</template>
I'm using a getter that does the following:
<script>
import { mapGetters } from 'vuex'
export default {
computed: {
...mapGetters(['productById'])
},
}
</script>
Here's the getter
export const getters = {
productById: (state) => (id) => {
return state.products.find(product => product.id === id)
},
}
my state is set to pull from firebase
export const actions = {
async setProducts({commit}) {
let colRef = collection(db, 'products')
const querySnapshot = await getDocs(colRef)
querySnapshot.forEach((doc) => {
const imageDownloadURL = getDownloadURL(ref(storage, `${doc.data().imageRef}`))
.then( url => {
// console.log(url)
let article = ({
id: doc.id,
name: doc.data().name,
price: doc.data().price,
description: doc.data().description,
imageURL: url
})
commit('setProducts', article)
})
})
},
}
the mutation to set the state:
export const mutations = {
setProducts(state, article) {
let matchProduct = state.products.find(product => product.id == article.id)
if(!matchProduct) {
state.products.push(article)
}
},
}
and this is my state:
export const state = () => ({
products: [],
})
i thought that if i load everything beforehand in default.vue under 'layouts' that i can then have the store.state.products set.
<template>
<div class="container">
<!-- <nuxt /> -->
<nuxt v-if="!loading"/>
<div class="overlay" v-else>
Loading...
</div>
</div>
</template>
<script>
export default {
created() {
this.loading = true
this.$store.dispatch('setCart')
this.$store.dispatch('setProducts')
.finally(() => (this.loading=false))
},
data() {
return {
loading: false,
}
},
}
</script>
sorry if this is turning out to be a long post - but basically on initial load, I get my imageURL, name and price. but then on reload it comes out empty. i believe the getter is occurring before the store is loaded. how do i set it so that i can state.products.find(product => product.id == article.id) for my getter after state is loaded?
Related
So I have a function called updateAll(data.items) which should take the array and randomly assign a new name, it appears the data.items is updating when I view in vue dev tools and is being passed to the component but not actually updating the browser
I've also added in my buildData.js this is being used for the same app but in react so was trying to keep it as general as I could
//HomeView.vue
<script setup>
import { reactive, watch } from "vue";
import Hero from '#/components/Hero.vue'
import FunctionButton from '#/components/FunctionButton.vue'
import ItemsContainer from '#/components/ItemContainer.vue';
import * as dataFunc from '#/data/buildData'
const data = reactive({
items: JSON.parse(localStorage.getItem('items')) || []
})
console.log(data.items)
watch(() => data.items,(newValue) => {
localStorage.setItem('items', JSON.stringify(newValue))
}, {deep: true});
</script>
<template>
<div class='w-2/3 mx-auto text-center'>
<Hero HeroText="The one stop shop to store recipes!" />
<main>
<h1 class="text-5xl font-extrabold dark:text-white">Recipe Manager</h1>
<div class='functions gap-4 grid grid-cols-2 md:grid-cols-3 mt-8 mx-auto w-fit'>
<FunctionButton name="Add new recipe" #click="() => data.items = [...data.items,...dataFunc.buildData(1)]"/>
<FunctionButton name="Add 100 recipes" #click="() => data.items = [...data.items,...dataFunc.buildData(100)]"/>
<FunctionButton name="Add 1000 recipes" #click="() => data.items = [...data.items,...dataFunc.buildData(1000)]"/>
<FunctionButton name="Delete all recipes" #click="() => data.items = dataFunc.deleteAll()"/>
<FunctionButton name="Edit all recipes" #click="() => data.items = dataFunc.updateAll(data.items)"/>
</div>
<ItemsContainer :items="data.items"/>
</main>
</div>
</template>
//ItemContainer.vue
<script setup>
import Item from '#/components/Item.vue';
const props = defineProps({
items: {type: Array, default: () => []},
})
</script>
<template>
<div
class='items-container w-full md:w-max bg-gray-800 dark:bg-gray-800 text-white dark:text-black mx-auto mt-12 p-4 space-y-4'>
<Item
v-for="item in items"
v-if="items.length > 0"
:key="item.id"
:meal="item"
/>
<p v-else class='text-white'>No items to display</p>
</div>
</template>
I tried to make this as generic as possible as trying to make a similar app on Vue and React so they could share this
import { v4 as uuidv4 } from 'uuid';
function create(){
const data = {
id: uuidv4(),
category: category[random(category.length)],
name: meals[random(meals.length)],
prepTime: randomTime(),
cookTime: randomTime(),
isFav: false
}
return data
}
function random(max){
return Math.round(Math.random() * 1000) % max;
}
const meals = [
"Roast Chicken", "Omelette", "Steak Pie", "Beef Stir Fry", "Fish And Chips", "Tomato And Prawn Risotto", "Pepperoni Pizza", "Cheesy Nachos", "Fajitas", "Baked Potato",
"Full English Breakfast", "Pancakes", "Chocolate Brownies", "Meatballs With Red Pepper Sauce", "Chicken Cesar Salad", "Beef Burger", "Chips","Macaroni Cheese", "Fillet Steak", "Chicken Wings",
"BBQ Ribs", "Tomato Soup", "Prawn Dim Sum", "Pork Gyozas", "Tomato Bruschetta", "Spring Rolls", "Beef Jerky", "Lasagne", "Spagetti Carbonara", "Salmon And Potatoes"
]
const category = [
"Breakfast", "Lunch", "Dinner"
]
function randomTime(){
return Math.round(Math.random() * 30)
}
function buildData(count){
const data = new Array(count);
for(let i = 0; i<count; i++){
data[i] = create();
}
return data;
}
function updateAll(currentArray){
return currentArray.map((item) => {
return{...item, name: meals[random(meals.length)], }
})
}
function updateOne(item){
return{...item, name: meals[random(meals.length)], }
}
function favouriteAll(currentArray = []){
return currentArray.map((item) => {
return {...item, isFav: true}
})
}
function deleteAll(){
const data = []
return data;
}
export {buildData, deleteAll, favouriteAll, updateAll, updateOne};
Check the console for errors.
If I take the functionality from HomeView.vue, your ItemContainer.vue and an Item.vue (which you didn't provided), then it works.
Check the working Vue SFC Playground
The code:
App.vue
<script setup>
import { ref, watch, reactive } from 'vue'
import ItemsContainer from './ItemContainer.vue';
const data = reactive({
items: []
})
console.log(data.items)
watch(() => data.items, (newValue) => {
alert(JSON.stringify(newValue))
}, {deep: true});
const addItem = () => {
data.items.push({ id: data.items.length, name: 'New Item'})
}
</script>
<template>
<ItemsContainer :items="data.items"/><br />
<button type="button" #click="addItem()">Add</button>
</template>
ItemContainer.vue is the same.
Item.vue
<script setup>
const props = defineProps({
meal: {
type: Object,
default: {undefined}
}
})
</script>
<template>
<div>
{{JSON.stringify(meal)}}<br />
</div>
</template>
UPDATE
I've updated the playground with your functions and it still does work well. The problem is somewhere else.
Please kindly help me with this, because I'm new in vue.js.
So, I have 2 Vue files :
Greetinglist.vue, It calls data from api using axios.get
Greeting.vue, It posts data using axios.post
After submit data, how to refresh the data without reload the page ?
I'm using <script setup> tag.
(greetinglist.vue)
<div class="p-2" v-for="(message, index) in messages" :key="index">
<div>
<h3>{{ message.name }}<span>{{message.date}}</span></h3>
<p class="text-slate-300 text-lg">{{ message.greeting }}</p>
</div>
<hr/>
</div>
<script setup>
import {ref, onMounted } from 'vue'
import axios from 'axios'
let messages = ref([]);
function getMessages() {
axios.get('http://127.0.0.1:8000/api/messages')
.then((result) => {
messages.value = result.data
}).catch((err) => {
console.log(err.response.data)
})
}
onMounted(() => {
getMessages()
});
</script>
(Greeting.vue)
<form #submit.prevent="store()">
<div class="">
<input type="text" placeholder="" v-model="messages.name">
<textarea name="" id="" cols="28" rows="10" placeholder="" v-model="messages.greeting"></textarea>
</div>
<button>Submit</button>
</form>
<div>
<GreetingList/>
</div>
<script setup>
import { reactive } from 'vue'
import axios from 'axios'
import GreetingList from './GreetingList.vue'
const messages = reactive({
name: '',
greeting: '',
});
function store() {
axios.post('http://127.0.0.1:8000/api/messages', messages)
.then((result) => {
messages.name = ''
messages.greeting = ''
})
.catch((err) => {
})
}
</script>
You can move getMessages function to greeting.vue, and change greetinglist.vue to use props
greeting.vue
<form #submit.prevent="store()">
<div class="">
<input type="text" placeholder="" v-model="messages.name">
<textarea name="" id="" cols="28" rows="10" placeholder="" v-model="messages.greeting"></textarea>
</div>
<button>Submit</button>
</form>
<div>
<GreetingList :messages="messageList" />
</div>
<script setup>
import { reactive } from 'vue'
import axios from 'axios'
import GreetingList from './GreetingList.vue'
const messages = reactive({
name: '',
greeting: '',
});
let messageList = ref([])
function store() {
axios.post('http://127.0.0.1:8000/api/messages', messages)
.then((result) => {
messages.name = ''
messages.greeting = ''
getMessages()
})
.catch((err) => {
})
}
function getMessages() {
axios.get('http://127.0.0.1:8000/api/messages')
.then((result) => {
messageList.value = result.data
}).catch((err) => {
console.log(err.response.data)
})
}
onMounted(() => {
getMessages()
});
</script>
greetinglist.vue
<script setup>
defineProps(['messages'])
</script>
If I understood your requirement correctly, I am assuming you have both the components in a single page and you want to get the details of newly added greeting from Greeting.vue in the GreetingList.vue reactively (without refreshing the route). If Yes, You can achieve that by calling a getMessages() method on successfully promise of axios.post and then pass the results in the GreetingList.vue.
Demo (I just created it using Vue 2, You can change it accordingly as per Vue 3) :
Vue.component('child', {
// declare the props
props: ['msglist'],
// just like data, the prop can be used inside templates
// and is also made available in the vm as this.message
template: `<div>
<div v-for="(message, index) in msglist" :key="index">
<h3>{{ message.name }}</h3>
<p>{{ message.greeting }}</p>
<hr/>
</div>
</div>`
});
var app = new Vue({
el: '#app',
data: {
messages: {
name: null,
greeting: null
},
// For demo, I am just mock data for initial greeting listing.
messageList: [{
name: 'Alpha',
greeting: 'Hi !'
}, {
name: 'Beta',
greeting: 'Hello !'
}]
},
methods: {
store() {
// Post API call will happen here.
// on success, make a call to get list of greetings.
if (this.messages.name && this.messages.greeting) {
this.getMessages();
}
},
getMessages() {
// Get API call will happen here. For demo, I am just using the mock data and pushing the newly submitted greeting in a exisiting messageList.
this.messageList.push({
name: this.messages.name,
greeting: this.messages.greeting
})
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<input type="text" placeholder="Name" v-model="messages.name"/>
<textarea cols="28" rows="10" placeholder="Greeting" v-model="messages.greeting"></textarea>
<button #click="store">Submit</button>
<child :msglist="messageList">
</child>
</div>
<template>
<div>
<h1>Post component</h1>
<form #submit="submitData" method="post">
<input type="text" placeholder="Enter Title" name="tilte" v-model="userdata.title" /><br />
<br />
<input type="text" placeholder="Enter Author" name="author" v-model="userdata.author" /><br /><br />
<button type="submit">Submit Data</button>
</form>
</div>
</template>
<script>
import axios from "axios";
export default {
name: "postcomponent",
data() {
return {
userdata: {
title: null,
author: null,
},
};
},
methods: {
submitData(e) {
axios.post(
"http://localhost:3000/posts",
this.userdata
).then((result) => {
console.warn(result)
});
e.preventDefault();
},
},
};
</script>
I am attempting to build a Pokemon filtered search app with Vue 3 and Composition API based on the following tutorial: https://www.youtube.com/watch?v=QJhqr7jqxVo. (GitHub: https://github.com/ErikCH/PokemonVue)
The fetch method used in the search component includes a reduce() function to handle urlIdLookup based on a specific id assigned to each Pokemon in the API response:
const state = reactive({
pokemons: [],
filteredPokemon: computed(()=> updatePokemon()),
text: "",
urlIdLookup: {}
});
fetch("https://pokeapi.co/api/v2/pokemon?offset=0")
.then((res) => res.json())
.then((data) => {
console.log(data);
state.pokemons = data.results;
state.urlIdLookup = data.results.reduce((acc, cur, idx)=>
acc = {...acc, [cur.name]:idx+1 }
,{})
console.log('url',state.urlIdLookup+1)
});
urlIdLookup is then passed into the route used to display selected Pokemon info:
<div
class="ml-4 text-2xl text-blue-400"
v-for="(pokemon, idx) in filteredPokemon"
:key="idx"
>
<router-link :to="`/about/${urlIdLookup[pokemon.name]}`">
{{ pokemon.name }}
</router-link>
</div>
Instead of using the above fetch setup, I wish to use Axios to handle the request and response from the Pokemon API. After installing Axios in the project and importing it into the component, I added a new fetchPokemon method:
const fetchPokemon = () => {
axios.get('https://pokeapi.co/api/v2/pokemon?offset=0')
.then(response => {
state.pokemons = response.data
})
}
onMounted(() => {
fetchPokemon()
})
While using Axios in this new fetch method, I want to handle urlIdLookup similar to the previous fetch setup, but without using the reduce() method and de-structured accumulator, if possible. How can I go about using Axios to retrieve the urlId of each Pokemon, then pass that urlId into the "about" route in the template?
Here is the full component:
<template>
<div class="w-full flex justify-center">
<input placeholder="Enter Pokemon here" type="text"
class="mt-10 p-2 border-blue-500 border-2" v-model="text" />
</div>
<div class="mt-10 p-4 flex flex-wrap justify-center">
<div
class="ml-4 text-2xl text-blue-400"
v-for="(pokemon, idx) in filteredPokemon"
:key="idx"
>
<router-link :to="`/about/${urlIdLookup[pokemon.name]}`">
{{ pokemon.name }}
</router-link>
</div>
</div>
</template>
<script>
import axios from 'axios';
import { reactive, toRefs, computed, onMounted } from "vue";
export default {
setup() {
const state = reactive({
pokemons: [],
filteredPokemon: computed(()=> updatePokemon()),
text: "",
urlIdLookup: {}
});
const fetchPokemon = () => {
axios.get('https://pokeapi.co/api/v2/pokemon?offset=0')
.then(response => {
state.pokemons = response.data
})
}
onMounted(() => {
fetchPokemon()
})
// fetch("https://pokeapi.co/api/v2/pokemon?offset=0")
// .then((res) => res.json())
// .then((data) => {
// console.log(data);
// state.pokemons = data.results;
// state.urlIdLookup = data.results.reduce((acc, cur, idx)=>
// acc = {...acc, [cur.name]:idx+1 }
// ,{})
// console.log('url',state.urlIdLookup+1)
// });
function updatePokemon(){
if(!state.text){
return []
}
return state.pokemons.filter((pokemon)=>
pokemon.name.includes(state.text)
)
}
return { ...toRefs(state), fetchPokemon, updatePokemon };
}
};
</script>
If I understood you correctly take a look at following snippet:
const { reactive, toRefs, computed, onMounted } = Vue
const { axioss } = axios
const app = Vue.createApp({
setup() {
const state = reactive({
pokemons: [],
filteredPokemon: computed(() => updatePokemon()),
text: "",
urlIdLookup: {},
});
const fetchPokemon = () => {
axios
.get("https://pokeapi.co/api/v2/pokemon?offset=0")
.then((response) => {
state.pokemons = response.data.results; // 👈 get just results
});
};
fetchPokemon();
// 👇 function to get index
const getPokemonId = (item) => {
return state.pokemons.findIndex((p) => p.name === item);
};
function updatePokemon() {
if (!state.text) {
return [];
}
return state.pokemons.filter((pokemon) =>
pokemon.name.includes(state.text)
);
}
// 👇 return new function
return { ...toRefs(state), fetchPokemon, updatePokemon, getPokemonId };
},
})
app.mount('#demo')
<script src="https://unpkg.com/vue#3.2.29/dist/vue.global.prod.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/axios/0.26.1/axios.min.js" integrity="sha512-bPh3uwgU5qEMipS/VOmRqynnMXGGSRv+72H/N260MQeXZIK4PG48401Bsby9Nq5P5fz7hy5UGNmC/W1Z51h2GQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<div id="demo">
<div class="w-full flex justify-center">
<input
placeholder="Enter Pokemon here"
type="text"
class="mt-10 p-2 border-blue-500 border-2"
v-model="text"
/>
</div>
<div class="mt-10 p-4 flex flex-wrap justify-center">
<div
class="ml-4 text-2xl text-blue-400"
v-for="(pokemon, i) in filteredPokemon"
:key="i"
>
<!-- // 👇 call function to get index -->
<router-link :to="`/about/${getPokemonId(pokemon.name)}`">
{{ pokemon.name }} - id {{ getPokemonId(pokemon.name) }}
</router-link>
</div>
</div>
</div>
it seem id is not necessary, why not use name be id. if you want use interger
be must, you can foreach results set index be id to each item, then
<router-link :to="`/about/${pokemon.id}`">
{{ pokemon.name }}
</router-link>
I have some problem about component $emit
This is my child component:
<template>
<div class="input-group mb-3 input-group-sm">
<input v-model="newCoupon" type="text" class="form-control" placeholder="code">
<div class="input-group-append">
<button class="btn btn-outline-secondary" type="button" #click="addCoupon">comfirm</button>
</div>
</div>
</template>
<script>
export default {
props: ["couponcode"],
data() {
return {
newCoupon: this.couponcode
};
},
methods: {
addCoupon() {
this.$emit("add", this.newCoupon);
}
}
};
</script>
This is parent component
<template>
<div>
<cartData :couponcode="coupon_code" #add="addCoupon"></cartData>
</div>
</template>
<script>
import cartData from "../cartData";
export default {
components: {
cartData
},
data() {
return {
coupon_code: ""
}
},
methods:{
addCoupon() {
const api = `${process.env.API_PATH}/api/${
process.env.CUSTOM_PATH
}/coupon`;
const vm = this;
const coupon = {
code: vm.coupon_code
};
this.$http.post(api, { data: coupon }).then(response => {
console.log(response.data);
});
},
}
}
</script>
When I click the 'confirm' button,the console.log display 'can't find the coupon' 。 If I don't use the component,it will work 。
What is the problem? It's about emit?
addCoupon() {
this.$emit("add", this.newCoupon); // You emitted a param
}
// then you should use it in the listener
addCoupon(coupon) { // take the param
const api = `${process.env.API_PATH}/api/${
process.env.CUSTOM_PATH
}/coupon`;
const coupon = {
code: coupon // use it
};
this.$http.post(api, { data: coupon }).then(response => {
console.log(response.data);
});
},
i am still new to VUEX and i am following this tutorial vuex store
The only thing i am doing differently is i am using sequelize instead of mLab like he does.
This is what my getters look like
export const companyGetters = {
allCompanies: (state, getters) => {
return state.companies
},
companyById: (state, getters) => id => {
if (getters.allCompanies.length > 0) {
return getters.allCompanies.filter(c => c._id === id)[0]
} else {
return state.company
}
}
Exactly like what he did.
My action looks like this
companyById ({commit}, payload) {
commit(COMPANY_BY_ID)
axios.get(`${API_BASE}/companies/${payload}`).then(response => {
console.log(payload, response.data)
commit(COMPANY_BY_ID_SUCCESS, response.data)
})
}
Next in my details i have
<template>
<div>
<company-details :company="company" ></company-details>
</div>
</template>
<script>
import CompanyDetails from '../components/company/CompanyDetails'
export default {
created () {
if (!this.company.companyName) {
this.$store.dispatch('companyById', this.$route.params['id'])
}
},
computed: {
company () {
return this.$store.getters.companyById(this.$route.params['id'])
}
},
components: {
'company-details': CompanyDetails
}
}
</script>
and then finally my companyDetails looks like this
<template>
<v-ons-col style="width: 350px; float:left;">
<v-ons-card>
<h1>{{company}}</h1>
</v-ons-card>
</v-ons-col>
</template>
<script>
export default {
props: ['company']
}
</script>
here is the mutations
export const companyMutations = {
[ALL_COMPANYS] (state) {
state.showLoader = true
},
[ALL_COMPANYS_SUCCESS] (state, payload) {
state.showLoader = false
state.companies = payload
},
[COMPANY_BY_ID] (state) {
state.showLoader = true
},
[COMPANY_BY_ID_SUCCESS] (state, payload) {
state.showLoader = false
state.company = payload
}
and here is my actions
allCompanies ({commit}) {
commit(ALL_COMPANYS)
axios.get(`${API_BASE}/companies`).then(response => {
commit(ALL_COMPANYS_SUCCESS, response.data)
})
},
companyById ({commit}, payload) {
commit(COMPANY_BY_ID)
axios.get(`${API_BASE}/companies/${payload}`).then(response => {
console.log(payload, response.data)
commit(COMPANY_BY_ID_SUCCESS, response.data)
})
My CompanyList looks like this
<template>
<div>
<div class="companies">
<div class="container">
<template v-for="company in companies" >
<company :company="company" :key="company.id"></company>
</template>
</div>
</div>
</div>
</template>
<script>
import Company from './Company.vue'
export default {
name: 'companies',
created () {
if (this.companies.length === 0) {
this.$store.dispatch('allCompanies')
}
},
computed: {
companies () {
return this.$store.getters.allCompanies
}
},
components: {
'company': Company
}
}
</script>
Imported Company looks like this
<template>
<v-ons-col style="width: 350px; float:left;">
<router-link :to="'/details/'+company.id" class="company-link">
<v-ons-card>
<img :src="company.imageURL" style="width:100% ;margin: 0 auto;display: block;">
<div class="title">
<b>{{company.companyName}}</b>
</div>
<div class="description">
{{company.description}}
</div>
<div class="content">
<!-- <template v-for="company in companies">
{{company}}
</template> -->
</div>
</v-ons-card>
</router-link>
</v-ons-col>
</template>
<script>
export default {
name: 'company',
props: ['company']
}
</script>
So when i click on one of these "companies" its suppose to get it by id and show the details however in the getters this return getters.allCompanies.filter(c => c._id === id)[0] returns undefined, when i refresh the page then it gets the correct company and displays it, what is going on please help. If you need more info please ask