How to use Swiper.js(version 8+) in Nuxt(2.15.8) - vue.js

First I tried this as showed in official Swiper.js website for Vue 3 demo
<template>
<swiper
:effect="'coverflow'"
:grabCursor="true"
:centeredSlides="true"
:slidesPerView="'auto'"
:coverflowEffect="{
rotate: 50,
stretch: 0,
depth: 100,
modifier: 1,
slideShadows: true,
}"
:pagination="true"
:modules="modules"
class="mySwiper"
>
<swiper-slide v-for="card in cards"
><img
:src="card.image" /></swiper-slide>
</swiper>
</template>
<script>
// Import Swiper Vue.js components
import { Swiper, SwiperSlide } from "swiper/vue";
// Import Swiper styles
import "swiper/css";
import "swiper/css/effect-coverflow";
import "swiper/css/pagination";
import "./style.css";
// import required modules
import { EffectCoverflow, Pagination } from "swiper";
export default {
props: ['cards']
setup() {
return {
modules: [EffectCoverflow, Pagination],
};
},
};
</script>
And it did not work.
Then I tried to import it as a plugin in plugins folder of nuxt:
import Vue from 'vue';
import { Swiper, EffectCoverflow, Pagination } from "swiper";
const swiper = {
install(Vue, options) {
Vue.prototype.$swiper = Swiper;
Vue.prototype.$swiperModules = {
EffectCoverflow,
Pagination,
};
}
};
Vue.use(swiper);
And registred it in nuxt.js.config as: src: './plugins/swiper.client.js', mode: 'client'
And tried to use it in my component like this:
<template>
<Swiper>
<SwiperSlide v-for="card in cards" :key="card.id">
<NuxtLink :to="`products/${card.id}`" class="card">
<img
:src="require(card.image)"
alt="image"
class="image"
/>
<h3 class="header">{{ card.title }}</h3>
<p class="snippet">{{ card.snippet }}</p>
</NuxtLink>
</SwiperSlide>
</Swiper>
</template>
<script>
export default {
props: ['cards'],
mounted() {
this.swiper = new this.$swiper('.swiper', {
loop: true,
// configure Swiper to use modules
modules: [
this.$swiperModules.Pagination,
this.$swiperModules.EffectCoverflow,
],
})
},
}
</script>
And it is still not working, What am I doing wrong?
Can anyone help with it?

TLDR: Nuxt2 and Swiper8 are not compatible.
Swiper v8.0.0 is almost 1 year old: https://github.com/nolimits4web/swiper/releases/tag/v8.0.0
2 years ago, nolimits4web aka the main maintainer of the package said
Swiper Vue.js components are compatible only with new Vue.js version 3
Easy to say that the v8 of Swiper is definitely not compatible with Nuxt2 (using Vue2).
Even if there was a hack, it would be quite dirty and not the thing that I would recommend overall.
swiper#8.4.5 is also 38.7kB gzipped, which is quite on the heavy side of things.
If you're using all of its features and ready to upgrade to Nuxt3 (which might not be trivial), then you could maybe proceed.
Otherwise, you could maybe design your own carousel component or check the ones available here: https://github.com/vuejs/awesome-vue#carousel
I'm guessing that there are some projects with Nuxt2 support still, not too heavy and still maintained that could satisfy your needs.

Related

How to create vertical slider with Swiper Vue.js?

I am creating simple app using Vue3, also I am using Swiprer.js for vue, documentation of swiper.js (for vue3) is incomprehensible to me, I have imported all modules in my application, but now i want to create vertical scrollable slider, like picture below, my swiper component looks like this:
but still can't create vertical scrollable slider, this what my template looks like, any solutions?
<template>
<div class="container-main-slider">
<div class="container-main-slider__inner" id="sliderBox">
<swiper
:slides-per-view="1"
:space-between="20"
:direction="vertical"
:pagination="{ clickable: true}"
>
<swiper-slide>
<img :src="dynamic content">
</swiper-slide>
</swiper>
</div>
</div>
</template>
<script>
/* swiper slider imports */
import { Swiper, SwiperSlide } from "swiper/vue";
import SwiperCore, { A11y, Autoplay, Pagination } from "swiper";
import "swiper/swiper.scss";
import "swiper/swiper.scss";
import 'swiper/components/pagination/pagination.scss';
SwiperCore.use([A11y, Autoplay,Pagination]);
export default {
data(){
return{
fixedheader:false,
}
},
components: {
Swiper,
SwiperSlide,
},
methods:{
showVideo(){
this.$store.commit("CheckvideoVisibility", false)
},
onSlideChange() {
console.log('slide change');
},
},
};
</script>
`
I have a solution
If someone faced the same problem: you just need to put 'vertical' in single quotes.
It will look like this in Vue template:
<swiper
:slides-per-view="1"
:space-between="0"
:direction="'vertical'"
>

Vue single file component import lifecycle hooks

I need help with the setup of my Vue application (I am just learning vue).
I read in the tutorials that to get access to a lifecycle hook I would need to do something like this:
<template>
<h4>Sports</h4>
<li v-for="sport in sports" v-bind:key="sport.id">
{{ sport.name }}
</li>
</template>
<script lang="ts">
import { onMounted } from "vue";
export default {
setup() {
onMounted(() => {
console.log("component mounted");
});
},
data() {
return {
sports: [],
};
},
};
</script>
However, VSCode's intellisense doesn't recognize onMounted as an exported function from vue. When I run my code in snowpack it still doesn't recognize the function.
I think the issue is likely due to lang="ts"
You could try having the js in a separate file and referencing it with <script lang="ts" src="./myComponent.ts"> and then have the typescript in there.
Here is some documentation someone came up with regarding, what seems to be, the same/related issue.
https://github.com/patarapolw/vue-typescript-suggestions
You don't need to import them, they are already available:
<template>
<h4>Sports</h4>
<li v-for="sport in sports" v-bind:key="sport.id">
{{ sport.name }}
</li>
</template>
<script>
export default {
data() {
return {
sports: [],
};
},
mounted() {
console.log("component mounted");
};
};
</script>
Also, unless you specifically want to use typescript, then leave off lang="ts" in the script tag.

Why is my `client-only` component in nuxt complaining that `window is not defined`?

I have Vue SPA that I'm trying to migrate to nuxt. I am using vue2leaflet in a component that I enclosed in <client-only> tags but still getting an error from nuxt saying that window is not defined.
I know I could use nuxt-leaflet or create a plugin but that increases the vendor bundle dramatically and I don't want that. I want to import the leaflet plugin only for the components that need it. Any way to do this?
<client-only>
<map></map>
</client-only>
And the map component:
<template>
<div id="map-container">
<l-map
style="height: 80%; width: 100%"
:zoom="zoom"
:center="center"
#update:zoom="zoomUpdated"
#update:center="centerUpdated"
#update:bounds="boundsUpdated"
>
<l-tile-layer :url="url"></l-tile-layer>
</l-map>
</div>
</template>
<script>
import {
LMap,
LTileLayer,
LMarker,
LFeatureGroup,
LGeoJson,
LPolyline,
LPolygon,
LControlScale
} from 'vue2-leaflet';
import { Icon } from 'leaflet';
import 'leaflet/dist/leaflet.css';
// this part resolve an issue where the markers would not appear
delete Icon.Default.prototype._getIconUrl;
export default {
name: 'map',
components: {
LMap,
LTileLayer,
LMarker,
LFeatureGroup,
LGeoJson,
LPolyline,
LPolygon,
LControlScale
},
//...
I found a way that works though I'm not sure how. In the parent component, you move the import statement inside component declarations.
<template>
<client-only>
<map/>
</client-only>
</template>
<script>
export default {
name: 'parent-component',
components: {
Map: () => if(process.client){return import('../components/Map.vue')},
},
}
</script>
<template>
<client-only>
<map/>
</client-only>
</template>
<script>
export default {
name: 'parent-component',
components: {
Map: () =>
if (process.client) {
return import ('../components/Map.vue')
},
},
}
</script>
The solutions above did not work for me.
Why? This took me a while to find out so I hope it helps someone else.
The "problem" is that Nuxt automatically includes Components from the "components" folder so you don't have to include them manually. This means that even if you load it dynamically only on process.client it will still load it server side due to this automatism.
I have found the following two solutions:
Rename the "components" folder to something else to stop the automatic import and then use the solution above (process.client).
(and better option IMO) there is yet another feature to lazy load the automatically loaded components. To do this prefix the component name with "lazy-". This, in combination with will prevent the component from being rendered server-side.
In the end your setup should look like this
Files:
./components/map.vue
./pages/index.html
index.html:
<template>
<client-only>
<lazy-map/>
</client-only>
</template>
<script>
export default {
}
</script>
The <client-only> component doesn’t do what you think it does. Yes, it skips rendering your component on the server side, but it still gets executed!
https://deltener.com/blog/common-problems-with-the-nuxt-client-only-component/
Answers here are more focused towards import the Map.vue component while the best approach is probably to properly load the leaflet package initially inside of Map.vue.
Here, the best solution would be to load the components like so in Map.vue
<template>
<div id="map-container">
<l-map style="height: 80%; width: 100%">
<l-tile-layer :url="url"></l-tile-layer>
</l-map>
</div>
</template>
<script>
import 'leaflet/dist/leaflet.css'
export default {
name: 'Map',
components: {
[process.client && 'LMap']: () => import('vue2-leaflet').LMap,
[process.client && 'LTileLayer']: () => import('vue2-leaflet').LTileLayer,
},
}
</script>
I'm not a leaflet expert, hence I'm not sure if Leaflet care if you import it like import('vue2-leaflet').LMap but looking at this issue, it looks like it doesn't change a lot performance-wise.
Using Nuxt plugins is NOT a good idea as explained by OP because it will increase the whole bundle size upfront. Meaning that it will increase the loading time of your whole application while the Map is being used only in one place.
My How to fix navigator / window / document is undefined in Nuxt answer goes a bit more in detail about this topic and alternative approaches to solve this kind of issues.
Especially if you want to import a single library like vue2-editor, jsplumb or alike.
Here is how I do it with Nuxt in Universal mode:
this will: 1. Work with SSR
2. Throw no errors related to missing marker-images/shadow
3. Make sure leaflet is loaded only where it's needed (meaning no plugin is needed)
4. Allow for custom icon settings etc
5. Allow for some plugins (they were a pain, for some reason I thought you could just add them as plugins.. turns out adding them to plugins would defeat the local import of leaflet and force it to be bundled with vendors.js)
Wrap your template in <client-only></client-only>
<script>
let LMap, LTileLayer, LMarker, LPopup, LIcon, LControlAttribution, LControlZoom, Vue2LeafletMarkerCluster, Icon
if (process.client) {
require("leaflet");
({
LMap,
LTileLayer,
LMarker,
LPopup,
LIcon,
LControlAttribution,
LControlZoom,
} = require("vue2-leaflet/dist/vue2-leaflet.min"));
({
Icon
} = require("leaflet"));
Vue2LeafletMarkerCluster = require('vue2-leaflet-markercluster')
}
import "leaflet/dist/leaflet.css";
export default {
components: {
"l-map": LMap,
"l-tile-layer": LTileLayer,
"l-marker": LMarker,
"l-popup": LPopup,
"l-icon": LIcon,
"l-control-attribution": LControlAttribution,
"l-control-zoom": LControlZoom,
"v-marker-cluster": Vue2LeafletMarkerCluster,
},
mounted() {
if (!process.server) //probably not needed but whatever
{
// This makes sure the common error that the images are not found is solved, and also adds the settings to it.
delete Icon.Default.prototype._getIconUrl;
Icon.Default.mergeOptions({
// iconRetinaUrl: require('leaflet/dist/images/marker-icon-2x.png'), // if you want the defaults
// iconUrl: require('leaflet/dist/images/marker-icon.png'), if you want the defaults
// shadowUrl: require('leaflet/dist/images/marker-shadow.png') if you want the defaults
shadowUrl: "/icon_shadow_7.png",
iconUrl: "/housemarkerblue1.png",
shadowAnchor: [10, 45],
iconAnchor: [16, 37],
popupAnchor: [-5, -35],
iconSize: [23, 33],
// staticAnchor: [30,30],
});
}
},
And there's proof using nuxt build --modern=server --analyze
https://i.stack.imgur.com/kc6q4.png
I am replicating my answer here since this is the first post that gets reached searching for this kind of problem, and using the solutions above still caused nuxt to crash or error in my case.
You can import your plugin in your mounted hook, which should run in the client only. So:
async mounted() {
const MyPlugin = await import('some-vue-plugin');
Vue.use(MyPlugin);
}
I do not know about the specific plugin you are trying to use, but in my case I had to call Vue.use() on the default property of the plugin, resulting in Vue.use(MyPlugin.default).

Vue2-leaflet map not showing properly in BoostrapVue modal

Here's my problem - a Vue2 leaflet map does not render correctly in BootstrapVue modal.
Here's what it looks like visually (it should show just the ocean)
<template>
<div>
<b-modal size="lg" :visible="visible" #hidden="$emit('clear')" title="Event details">
<div class="foobar1">
<l-map :center="center" :zoom="13" ref="mymap">
<l-tile-layer :url="url" :attribution="attribution"></l-tile-layer>
<l-marker :lat-lng="center"></l-marker>
</l-map>
</div>
<template slot="modal-footer">
<b-btn variant="danger" #click="deleteEventLocal(event.id)">Delete</b-btn>
</template>
</b-modal>
</div>
</template>
<script>
import * as moment from "moment";
import { LMap, LMarker, LTileLayer } from "vue2-leaflet";
import { deleteEvent } from "./api";
import "vue-weather-widget/dist/css/vue-weather-widget.css";
import VueWeatherWidget from "vue-weather-widget";
export default {
data() {
return {
center: L.latLng(event.latitude, event.longitude),
url: "http://{s}.tile.osm.org/{z}/{x}/{y}.png",
attribution:
'© OpenStreetMap contributors'
};
},
props: {
visible: {
type: Boolean
},
event: {
required: true,
type: Object
}
},
methods: {
async deleteEventLocal(id) {
await deleteEvent(id);
this.$emit("refresh");
this.$emit("clear");
}
},
components: {
weather: VueWeatherWidget,
LMap,
LMarker,
LTileLayer
}
};
</script>
As you can see there aren't any CSS rules that could make the map spill outside the modal as it does. Which is weird.
I'm kinda asking this question to answer it myself as I couldn't find a solution before.
There were 3 issues because of which this was happening.
1. First - I forgot to load the leaflet css into main.js - this is why the leaflet map was somehow outside the modal.
//src/main.js
import '#babel/polyfill';
import Vue from 'vue';
import './plugins/bootstrap-vue';
import App from './App.vue';
import router from './router';
import store from './store';
//above imports not important to this answer
import 'leaflet/dist/leaflet.css'; //<--------------add this line
new Vue({
router,
store,
render: h => h(App),
}).$mount('#app');
2. Now the map may disappear. Set a width and height on the l-map component's container. I used a class but you can use style="" etc.
<div class="foobar1"> <!-- <--- Add a class on l-map's container -->
<l-map :center="center" :zoom="13">
<l-tile-layer :url="url" :attribution="attribution"></l-tile-layer>
<l-marker :lat-lng="center"></l-marker>
</l-map>
</div>
<style lang="scss">
.foobar1 { /* <--- class we added above */
width: 100%;
height: 400px;
}
</style>
3. Now your map will render within the modal but if you move the map's view, you'll see that leaflet does not download the map's squares in time.
You will see something like this:
To fix this:
create an event handler on b-modal for the #shown event.
<b-modal
#shown="modalShown"
#hidden="$emit('clear')"
size="lg"
:visible="visible"
title="Event details"
>
I called mine modalShown.
Then, add a ref attribute to your l-map. I called mine mymap.
<l-map :center="center" :zoom="13" ref="mymap"> <!-- ref attribute added to l-map -->
<l-tile-layer :url="url" :attribution="attribution"></l-tile-layer>
<l-marker :lat-lng="center"></l-marker>
</l-map>
Then, create a modalShown method in the Vue methods for your view/component and call invalidateSize() inside.
export default {
data() {
//some data here
}
methods: {
modalShown() {
setTimeout(() => {
//mapObject is a property that is part of leaflet
this.$refs.mymap.mapObject.invalidateSize();
}, 100);
}
}
}
Now everything should be fine:
map should not spill outside the modal
map should be visible (duh)
map squares should be downloaded when within map body
Here's my full code, it contains some stuff specific to my app but overall it contains all of the code snippets above.
Addtional to Artur Tagisow answer
You can also use this approach to your parent component if your map is in child component.
export default {
data() {
//some data here
}
methods: {
modalShown() {
setTimeout(() => {
window.dispatchEvent(new Event("resize"));
}, 100);
}
}
}
For vue.js and nuxt.js developers , probably it's because of using v-show or v-if
!in your case display none happening by bootstrap modal
but dont worry the only thing u have to do is using client-only (its like ssr but for new version of js frameworks like nuxt or vue):
<client-only>
<div id="bootstrapModal">
<div id="map-wrap" style="height: 100vh">
<l-map :zoom=13 :center="[55.9464418,8.1277591]">
<l-tile-layer url="http://{s}.tile.osm.org/{z}/{x}/{y}.png"></l-tile-layer>
<l-marker :lat-lng="[55.9464418,8.1277591]"></l-marker>
</l-map>
</div>
</div>
</client-only>
ps: if still not loaded in iphone browsers it's probably because of geolocation

Vue warn $listeners and $attrs is readonly

I am getting a lot of Vue warnings saying $listeners is readonly or $attrs is readonly and related to different Bootstrap items or to .
For example:
[Vue warn]: $attrs is readonly.
found in
---> <BDropdown>
<Display>
<App>
<Root>
I am very sure it has something to do with loading the Vue instance twice somehow, but I don't really know, how to do it any other way, so that the routing still works.
In my main.js the code is as follows:
import Vue from 'vue'
import App from './App'
import router from './router'
import firebase from 'firebase';
import './components/firebaseInit';
import store from './store';
import { i18n } from './plugins/i18n.js'
import BootstrapVue from 'bootstrap-vue'
import VueCarousel from 'vue-carousel';
import 'bootstrap/dist/css/bootstrap.css'
import 'bootstrap-vue/dist/bootstrap-vue.css'
Vue.use(BootstrapVue);
Vue.use(VueCarousel);
let app;
firebase.auth().onAuthStateChanged(user => {
if(!app) {
app = new Vue({
el: '#app',
router,
store,
i18n,
components: { App },
template: '<App/>'
})
}
})
My router/index.js code looks as follows:
import Vue from 'vue'
import Router from 'vue-router'
import firebaseApp from '#/components/firebaseInit'
Vue.use(Router)
let router = new Router({
routes: [
{
path: '/',
name: 'display',
component: Display
},
...
]
})
// Nav Guards
router.beforeEach((to, from, next) => {
// check for requiredAuth
if(to.matched.some(record => record.meta.requiresAuth)) {
// check if NOT logged in
...
} else {
// proceed to route
next();
}
} else {
next();
}
})
export default router;
As the sample errors come from Display.vue, here is an extract of that code:
<template>
<div>
<b-row>
<b-input-group prepend="Category">
<b-dropdown v-bind:text="currentCategory">
<b-dropdown-item #click="categroyChanged('All')">All</b-dropdown-item>
<b-dropdown-item v-for="c in categories" v-bind:key="c" #click="categoryChanged(c)">{{c}}</b-dropdown-item>
</b-dropdown>
</b-input-group>
</b-row>
<div class="row" v-for="i in Math.ceil(products.length / 3)" v-bind:key="i">
<div v-for="product in products.slice((i - 1) * 3, i * 3)" v-bind:key="product.id" class="col-md-4 col-6 my-1">
<b-card
v-bind:img-src="product.thumbUrl"
img-fluid
img-alt="image"
overlay>
<div slot="footer">
<small class="text-muted">{{product.name}}<br />{{product.price}} VND</small>
</div>
<router-link v-bind:to="{name: 'view-product', params: {product_id: product.product_id}}" class="secondary-content">
<i class="fa fa-eye"></i>
</router-link>
<router-link v-if="isEmployee" v-bind:to="{name: 'edit-product', params: {product_id: product.product_id}}" class="secondary-content">
<i class="fa fa-pencil"></i>
</router-link>
<button #click='addToCart(product)' class='button is-info'><i class="fa fa-cart-arrow-down"></i></button>
</b-card>
</div>
</div>
</div>
</template>
<script>
import firebaseApp from './firebaseInit'
import { mapActions } from 'vuex'
export default {
name: 'display',
data () {
return {
txtSearch: null,
isLoggedIn: false,
currentUser: false,
isEmployee: false,
products: []
}
},
beforeMount () {
var db = firebaseApp.firestore();
db.collection('products').get().then(querySnapshot => {
querySnapshot.forEach(doc => {
const data = {
'product_id': doc.id,
'article_number': doc.data().article_number,
'barcode': doc.data().barcode,
'category': doc.data().category,
'colour': doc.data().colour,
'description': doc.data().description,
'name': doc.data().name,
'name_ger': doc.data().name_ger,
'price': doc.data().price,
'size': doc.data().size,
'thumbUrl': doc.data().thumbUrl,
}
this.products.push(data)
})
})
}
},
methods: {
...mapActions(['addToCart']),
... many methods ...
}
}
</script>
How can I get rid of these errors?
There are two common reasons why this can happen:
Multiple Vue Locations
This can be due to contradictory locations of where you are importing Vue from, in different files, as others have said. So you might have both import Vue from 'vue' and perhaps import Vue from 'vue.runtime.esm' in your code, for example.
But this can result in multiple instances of Vue, which will cause these errors.
The solution in this case is to use import Vue from 'vue' everywhere in your code, and then alias it in your packaging system (webpack, Parcel, rollup etcetera). An example of this in webpack.config.js, or webpack.renderer.config.js if you're using Electron, would be:
module.exports = {
// ...
resolve: {
alias: {
'vue$': 'vue/dist/vue.esm.js' // 'vue/dist/vue.common.js' for webpack 1
}
}
// ...
}
See more examples in the Vue documents.
White Listing
This can also be because of a need for Vue to be whitelisted as not one of the externals in webpack, for example.
It is worth noting that changes in Bootstrap Vue from 2.0 to a later version, definitely by 2.15 (and possibly earlier), caused this same problem to occur.
module.exports = {
// ...
externals: [
'fast-glob',
'jquery',
'bunyan',
'yaml',
'vue', // Remove this
'bootstrap-vue', // Remove this
// ...
}
After chasing this for an hour, I realized that a component that I had imported was also accessing Vue. At the top of that file was import Vue from 'vue/dist/vue.esm'. Every other file was simply doing import Vue from 'vue', which was the source of my double-import.
Different javascript packagers have different ways of resolving duplicates. For WebPack, the Resolve Configuration might be helpful in the case of dependencies importing different instances of Vue.
This was my case (https://stackoverflow.com/a/62262296/4202997) but I'll repeat it here to save you time: I was importing vue from a CDN . I simply removed the script and the problem was solved.
In my case the duplicated instances were caused by some Vue plugins importing the Vue instance differently than how I was doing in my project. I managed to fix it by adding the following to my Webpack config:
externals: {
// Stubs out `require('vue')` so it returns `global.Vue`
vue: 'Vue',
},
Hope it can help anyone struggling with the same issue :)