I'm making an app with VueJS and Laravel. I'm getting an error, the push is not a function when I clicked an add to cart button. Everything is working here fine but methods addToCart gives error push is not a function. when I first click add to cart button it gives that error and once I refresh the page I can see a product in cart and again if click adds to cart button this time error is not seen, works perfectly. when cart[] is empty it gives error push is not a function, but when cart[] has at least one element I don't get that error.
Any help would be greatly appreciated.
productlist.vue
<template>
<div class="col-md-7">
<div class="card" style="width: 18rem;">
<div class="card-body">
<h5 class="card-title">{{ product.name }}</h5>
<p class="card-text">{{ product.price }}
</p>
<button class="btn btn-primary" #click="addProductToCart(product)">Add to cart</button>
</div>
</div>
</div>
</template>
<script type="text/javascript">
export default{
props:['product'],
data(){
return{
}
},
methods:{
addProductToCart(product){
axios.post('/products/create',{
product : product
}).then((response)=>{
console.log(response)
this.$emit('addedToCart',product)
});
}
}
}
</script>
cart.vue
<template>
<div class="col-md-4">
<li v-for="(item,index) in cart">
{{ item.name }}-{{ item.price }}
<button #click="removeitem(index)">Remove</button>
</li>
</div>
</template>
<script type="text/javascript">
export default{
props:['cart'],
}
</script>
Main.vue
<template>
<div>
<div class="col-md-7" v-for="product in products">
<Productlist :product="product" #addedToCart="addedToCart"></Productlist>
</div>
<Cart :cart="cart" ></Cart>
</div>
</template>
<script type="text/javascript">
import Productlist from './Productlist';
import Cart from './Cart';
export default{
data(){
return{
products:[],
cart: [ ]
}
},
mounted() {
//get all products and show in page
axios.get('/products')
.then((response)=>{
this.products = response.data;
});
// get only those products that are added to cart
axios.get('/list')
.then((response)=>{
this.cart= response.data;
console.log(response)
});
},
methods:{
addedToCart(product){
this.cart.push(product)
}
},
components:{Productlist,Cart}
}
</script>
i don't sure if this will resolve your problem but is unnecessary do:
<button class="btn btn-primary" #click="addProductToCart(product)">Add to cart</button>
because you have product as prop of the component, should be #click="addProductToCart" without problem.
and your method should be so:
addProductToCart() {
axios
.post('/products/create', {
product: this.product,
})
.then(response => {
console.log(response);
this.$emit('addedToCart', this.product);
});
}
One thing more, use kebab-case to call the key string when you emit to the parent component:
this.$emit('addedToCart', this.product);
replace it with:
this.$emit('added-to-cart', this.product);
Then in your parent component you have:
<Productlist :product="product" #addedToCart="addedToCart"></Productlist>
replace it with:
<Productlist :product="product" #added-to-cart="addedToCart"></Productlist>
I guess this last things will resolve your problem according the Vue documentation.
Related
I'm building a small project where it has a component in it, I should render the data from the API.
Here is my code:
<template>
<div>
<p v-if="$fetchState.pending">Fetching products...</p>
<p v-else-if="$fetchState.error">An error occurred :(</p>
<div v-else>
<h1>Nuxt products</h1>
<ul>
<li
v-for="(product, key) of product"
:key="product.id"
:img="product.img"
>
{{ product.description }}
</li>
</ul>
<button #click="$fetch">Refresh</button>
</div>
</div>
</template>
<script>
export default {
async fetch() {
this.products = await this.$axios("https://dummyjson.com/products");
},
};
</script>
and here is the error code:
Property or method "product" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option or for class-based components, by initializing the property
This works
<template>
<div>
<p v-if="$fetchState.pending">Fetching products...</p>
<p v-else-if="$fetchState.error">An error occurred :(</p>
<div v-else>
<h1>Nuxt products</h1>
<ul>
<li v-for="product in products" :key="product.id" :img="product.img">
{{ product.description }}
</li>
</ul>
<button #click="$fetch">Refresh</button>
</div>
</div>
</template>
<script>
export default {
data() {
return {
products: [],
};
},
async fetch() {
const response = await this.$axios.$get('https://dummyjson.com/products')
this.products = response.products
},
}
</script>
You need v-for="product in products" as explained here: https://vuejs.org/guide/essentials/list.html
Also, regarding the the network request
We can see that as usual, the actual data is inside data, hence you can use the $get shortcut: https://axios.nuxtjs.org/usage#-shortcuts
Then you need to access the products field to have the data to iterate on. Using the Vue devtools + network tab greatly helps debugging that one!
so the answer is i missed putting the data as #kissu has mentioned above
<template>
<div>
<p v-if="$fetchState.pending">Fetching products...</p>
<p v-else-if="$fetchState.error">An error occurred :(</p>
<div v-else>
<h1>Nuxt products</h1>
<ul>
<li v-for="product in products" :key="product.id">
{{ product.description }}
{{ product.images }}
</li>
</ul>
<button #click="$fetch">Refresh</button>
</div>
</div>
</template>
<script>
export default {
data() {
return {
products: [],
};
},
async fetch() {
const response = await this.$axios.$get("https://dummyjson.com/products");
this.products = response.products;
},
};
</script>
I have a todo app that I am working on which I divided it into two component one for form and the other for the todo list. in todo list I have a Method that delete the todo but it delete two todo instead of one I tried to console log the component that I click on and found that it get logged twice. I tried prevent method on click solution i found it here in stackoverflow but it didn't work.
<template>
<div class="todo" v-for="(todo, index) in todos" :key="index">
<div class="todo-text">{{ todo.text }}</div>
<div class="IconDiv">
<fa #click.prevent="deleteTodo(index)" class="icon" icon="trash-alt" />
<fa #click="completeTodo(index)" class="icon" icon="edit" />
<fa class="icon" icon="check-square" />
</div>
</div>
</template>
<script>
export default {
name: "TodoList",
emits: ["removeTodo", "completEmit"],
props: {
msg: String,
todos: Array,
val: String
},
data() {
return {};
},
methods: {
deleteTodo(index) {
return console.log(this.todos[index].text);
}
}
};
</script>
I have a web app which shows the blog posts in a grid. But the BlogCards component in the Home.vue just outputs nothing, whereas it should output the blogs in a grid format. All the datas are stored in firebase. If I go to /blogs, I can see the blogs in grid format, but it doesn't work on the Home.vue. It also spits out the Vue Warn: property or method "blogPostsCards" is not defined on the instance but referenced during render.
I took this code from this tutorial at 5:31:05 minute mark.
Any solution to this problem.
Home.vue
<template>
<div class="home">
<BlogPost :post="post" v-for="(post, index) in blogPostsFeed" :key="index" />
<div class="blog-card-wrap">
<div class="container">
<h3>View more recent blogs</h3>
<div class="blog-cards">
<BlogCards :post="post" v-for="(post, index) in blogPostsCard" :key="index" />
</div>
</div>
</div>
</div>
</div>
</template>
<script>
import BlogPost from '../components/BlogPost.vue'
import BlogCards from '../components/BlogCards.vue'
export default {
name: "Home",
components: {
BlogPost,
BlogCards,
Arrow
},
computed : {
blogPostsCards() {
return this.$store.getters.blogPostsCards;
},
blogPostsFeed() {
return this.$store.getters.blogPostsFeed;
},
}
};
</script>
BlogCards.vue
<template>
<div class="blog-card">
<img :src="post.blogCoverPhoto" alt="">
<div class="info">
<h4>{{ post.blogTitle }}</h4>
<h6>Posted on: {{ new Date(post.blogDate).toLocaleString('en-us', {dateStyle: "long"})}}</h6>
<router-link class="link" to="#" >
View Post <Arrow class="arrow" />
</router-link>
</div>
</div>
</template>
<script>
export default {
name: "blogCard",
props: ["post"],
computed: {
editPost() {
return this.$store.state.editPost
},
}
}
</script>
And getter function in store/index.js
getters:{
blogPostsFeed(state){
return state.blogPosts.slice(0,2);
},
blogPostsCards(state) {
return state.blogPosts.slice(2,6);
},
},
<BlogCards :post="post" v-for="(post, index) in blogPostsCard" :key="index" />
In your Home.vue >> change blogPostsCard to blogPostsCards because you use blogPostsCards in your computed so it gives you that error.
I'm working on this app and the idea is to show details of the cars in a sidebar on click. There are several issues like the sidebar is showing four times and I resolve it somehow but I don't know why is it showing four times. now I don't getting any response on emit call help me out please, I try $parent.$emit, $root.$emit but not seems working!!!
<template>
<div class="home">
<!-- warehouse details -->
<div
v-for="(detail, detailindex) in details"
:key="detailindex"
class="container mt-5 mb-5"
>
<h1>
{{ detail.name }}
<span class="location">{{ detail.cars.location }}</span>
</h1>
<!-- vehicle details -->
<SingleGarage :detail="detail"> </SingleGarage>
</div>
<b-sidebar
id="my-sidebar"
title="Sidebar with backdrop"
backdrop-variant="dark"
ref="mySidebar"
backdrop
shadow
#emitData="testingEmit()"
>
<div class="px-3 py-2">
<h1>{{currentCar}}</h1>
</div>
</b-sidebar>
</div>
</template>
<script>
// # is an alias to /src
import axios from "axios";
import SingleGarage from "../components/SingleGarage";
export default {
components: { SingleGarage },
name: "Home",
data: () => ({
details: String,
currentCar: 'String',
}),
methods:{
testingEmit(data){
this.currentCar = data
console.log('data from emit',data)
}
},
mounted() {
axios
.get("https://api.jsonbin.io/b/5ebe673947a2266b1478d892")
.then((response) => {
var results;
response.data.forEach((element) => {
element.cars.vehicles.sort((a, b) => {
a = new Date(a.date_added);
b = new Date(b.date_added);
results = a > b ? -1 : a < b ? 1 : 0;
return results * -1;
});
});
this.details = response.data;
});
},
};
</script>
<template>
<div class="vGrid mt-4">
<div
class="gridItem border vehicle singleCar"
v-for="(vehicle, vehicleIndex) in detail.cars.vehicles"
:class="'griditem' + vehicleIndex"
:key="vehicle._id"
>
<SingleCar
:vehicle="vehicle"
#click.native="testingTef(vehicleIndex)"
></SingleCar>
</div>
</div>
</template>
<script>
import SingleCar from "#/components/SingleCar";
export default {
name: "SingleGarage",
components: { SingleCar },
props: ["detail"],
data: () => ({
dummyImg: require("#/assets/img/dummycar.png"),
currentCar : 1
}),
methods: {
testingTef(vehicleIndex) {
this.$parent.$emit('emitData',this.detail.cars.vehicles[vehicleIndex].make)
this.$root.$emit('bv::toggle::collapse', 'my-sidebar')
console.log(this.detail.cars.vehicles[vehicleIndex].make)
console.log(this.detail.cars.vehicles[vehicleIndex].date_added)
this.currentCar = this.detail.cars.vehicles[vehicleIndex].make;
},
},
};
</script>
<template>
<div class="singleCar">
<!-- conditionally show image -->
<img
class="carImg"
:src="vehicle.img"
v-if="vehicle.img"
alt="No Preview"
/>
<img class="carImg" :src="dummyImg" v-else alt="No Preview" />
<div class="p-3">
<h3 class="make">{{ vehicle.make }}</h3>
<div class="modelDetails">
<div class="model d-flex ">
<p class="bold">Model:</p>
<p class="price ml-auto ">{{ vehicle.model }}</p>
</div>
<div class="price d-flex ">
<p class="bold">Price:</p>
<p class="price ml-auto ">€{{ vehicle.price }}</p>
</div>
</div>
<p class="dateAdded ml-auto ">{{ vehicle.date_added }}</p>
</div>
</div>
</template>
<script>
export default {
name: "SingleCar",
props: ["vehicle"],
data: () => ({
dummyImg: require("#/assets/img/dummycar.png"),
}),
methods:{
working(){
console.log('working');
console.log(this.vehicle.make)
}
}
};
</script>
Thanks for your help.
So a few things you can try to fix this
in your Home.vue you can change
#emitData="testingEmit()"
to
#emitData="testingEmit"
// or
#emitData="testingEmit($event)"
You are telling to the function testingEmit that is not params to parse. So you need to take out the () and Vue will parse everything that comes from the $event or you cant say put the $event as a param in your testingEmit (second option).
For your SingleGarage.vue you can take the $parent.$emit and replace it with
this.$emit('emitData',this.detail.cars.vehicles[vehicleIndex].make)
I have a .vue file, ServiceList, which imports the component Information.vue. I would like to run Information's code in a loop in ServiceList's template like so:
ServiceList.vue
<template>
<div>
<h1>Headline</h1>
<div v-for="service in services">
<h2>{{ service.name }}</h2>
<information v-bind:service="service"/>
</div>
</div>
</template>
<script>
import Information from './Information'
... (more components here)
export default {
components: {
Information,
... (more components here)
},
... (rest of export here)
}
</script>
This is what Information looks like:
Information.vue
<template>
<div>
<p v-bind:id="'info'+service.id"/>
</div>
</template>
<script>
export default {
props:['service'],
data: function () {
return {
services: this.$store.state.Services.data
}
},
methods: {
getInfo: function (service) {
var info = '<b>Servicename:</b> <br>';
info += service.name;
... (method adds more to 'info' here)
document.getElementById('info'+service.id).innerHTML = info;
}
}
}
</script>
I have tried to do stuff like
<template>
<div>
<p v-bind:id="'info'+service.id"/>
{{ getInfo(service) }}
</div>
</template>
but it never seems to work. Weird thing is that when I make it a button,
<template>
<div>
<button v-on:click="getInfo(service)">GET INFO</button>
<p v-bind:id="'info'+service.id"/>
</div>
</template>
it works perfectly! But I don't want a button, I just want it to appear.
You don't need to manipulate DOM in Vue js for such trivial case, just add all you want to template and remove getInfo method, example:
Information.vue
<template>
<div>
<p>
<b>Servicename:</b> <br>
{{ service.name }}<br>
<b>Another Field:</b> <br>
{{ service.anotherField }}<br>
<b>Another Field 2 :</b> <br>
{{ service.anotherField2 }}<br>
</p>
</div>
</template>
OR if you really want to work with html do this:
Information.vue
<template>
<div>
<p v-html="getInfo(service)"/>
</div>
</template>
<script>
export default {
props:['service'],
data: function () {
return {
services: this.$store.state.Services.data
}
},
methods: {
getInfo: function (service) {
if (!service) return '';
var info = '<b>Servicename:</b> <br>';
info += service.name;
... (method adds more to 'info' here)
return info;
}
}
}