My Vue.js component is like this:
<template>
<div>
<div class="panel-group" v-for="item in list">
...
<div class="panel-body">
<a role="button" data-toggle="collapse" href="#purchase-{{ item.id }}" class="pull-right" aria-expanded="false" aria-controls="collapseOne">
Show
</a>
</div>
<div id="purchase-{{ item.id }}" class="table-responsive panel-collapse collapse" role="tabpanel">
...
</div>
</div>
</div>
</template>
<script>
export default {
...
computed: {
list: function() {
return this.$store.state.transaction.list
},
...
}
}
</script>
When executed, there exists an error like this:
Vue template syntax error:
id="purchase-{{ item.id }}": Interpolation inside attributes has
been removed. Use v-bind or the colon shorthand instead.
How can I solve it?
Use JavaScript code inside v-bind (or shortcut ":"):
:href="'#purchase-' + item.id"
and
:id="'purchase-' + item.id"
Or if using ES6 or later:
:id="`purchase-${item.id}`"
Use v-bind or shortcut syntax ':' to bind the attribute.
Example:
<input v-bind:placeholder="title">
<input :placeholder="title">
Just use
:src="`img/profile/${item.photo}`"
If you're pulling data from an array of objects, you need to include require('assets/path/image.jpeg') in your object like I did below.
Working example:
people: [
{
name: "Name",
description: "Your Description.",
closeup: require("../assets/something/absolute-black/image.jpeg"),
},
Using require(objectName.propName.urlPath) in the v-img element did not work for me.
<v-img :src="require(people.closeup.urlPath)"></v-img>
The easiest way is too require the file address:
<img v-bind:src="require('../image-address/' + image_name)" />
The complete example below shows ../assets/logo.png:
<template>
<img v-bind:src="require('../assets/' + img)" />
</template>
<script>
export default {
name: "component_name",
data: function() {
return {
img: "logo.png"
};
}
};
</script>
The most elegant solution is save images outside Webpack. By default, Webpack compress images in Base64, so if you save images in your assets folder, that doesn't work because Webpack will compress images in base64, and that isn’t a reactive variable.
To solve your problem, you need to save your images in your public path. Usually the public path is in "public" folder or "statics".
Finally, you can do this:
data(){
return {
image: 1,
publicPath: process.env.BASE_URL
}
}
And your HTML you can do this:
<img :src="publicPath+'../statics/img/p'+image+'.png'" alt="HANGOUT PHOTO">
When to use the public folder
You need a file with a specific name in the build output
File depends on a reactive variable that can change in execution time
You have images and need to dynamically reference their paths
Some library may be incompatible with Webpack and you have no other option but to include it as a <script> tag.
More information: "HTML and Static Assets" in Vue.js documentation
Related
I have a child component sending data via an event to a parent component in VueJS. From the parent component, I am routing the data (or trying to route the data...) to a sibling of the child and create new components with the data sent from the child.
I use a dictionary to group the data for various reasons, then push the dictionary into an array. A v-for loop loops thru the array and populates the previously mentioned new components with data found in that array. I probably don't need to do it this way, but that's how I'm doing it. I am open to alternatives.
Anyway, it doesn't work great. So far I'm only able to get one of the three strings I need to show up where I want it to. I'll explain more after I post the code.
Already tried:
A dozen different versions of the code, including creating a simple v-for in a list to do the job, and various versions with/without a dictionary or array.
In my research for the problem I've gone through the VueJS docs, Googled a few things, and found nothing.
In App.vue (I tried to remove all the irrelevant stuff):
<template>
<div id="app">
<img alt="Vue logo" src="./assets/logo.png">
<TweetDeck v-on:messageFromTweetDeck="msgReceived($event)"/>
<!-- <ul>
<li v-for="(tweet, index) in tweets" :key="index">{{ tweet }}</li>
</ul>-->
<TwitterMsg v-for="(tweet, index) in tweets" :key="index"
:name="tweet.name" :handle="tweet.handle" tsp=3 :msg="tweet.tweet" />
<TwitterMsg name="aaa" handle='aaa'
tsp=50 msg="hey this is a message on twitter"/>
<input type="text" v-model="placeholderText"/>
</div>
</template>
<script>
import TwitterMsg from './components/TwitterMsg.vue'
import TweetDeck from './components/TweetDeck.vue'
export default {
name: 'app',
components: {
TwitterMsg,
TweetDeck
},
data: function() {
return {
tweets: [],
message: "",
placeholderText: ""
}
},
methods: {
msgReceived(theTweet, name, handle) {
this.tweets.push({tweet: theTweet, name: name, handle: handle})
}
}
}
</script>
And in TweetDeck.vue:
<template>
<div>
<input type='text' v-model="yourName">
<input type='text' v-model="yourHandle">
<input type='text' v-model="yourTweet"/>
<button type='button' #click="sendTweet()">Tweet</button>
</div>
</template>
<script>
export default {
name: "TweetDeck",
data: function() {
return {
yourName: "Your name here",
yourHandle: "Your twitter handle",
yourTweet: "What's going on?"
}
},
methods: {
sendTweet() {
this.$emit('messageFromTweetDeck', this.yourTweet, this.yourName, this.yourHandle);
}
}
}
</script>
You can also see the mostly unimportant TwitterMsg.vue here (I am trying to copy Twitter for learning purposes:
<template>
<div>
<h4>{{ name }}</h4>
<span>#{{ handle }}</span>
<span> {{ tsp }}</span> <!-- Time Since Posting = tsp -->
<span>{{ msg }}</span>
<img src='../assets/twit_reply.png'/><span>1</span>
<img src="../assets/twit_retweet.png"/><span>2</span>
<img src="../assets/twit_fave.png"/><span>3</span>
</div>
</template>
<script>
export default {
name: "TwitterMsg",
props: {
name: String,
handle: String,
tsp: String,
msg: String
}
}
</script>
<style>
img {
width: 30px;
height: 30px;
}
</style>
Expected result:
The code populates a new TwitterMsg component with appropriate name, handle and message data each time I click the "Tweet" button.
Actual results:
My code fails to help the name and handle strings make it from the input text box in TweetDeck.vue all the way to their home in TwitterMsg.vue.
I will say that this.yourTweet in TweetDeck.vue DOES manage to make it all the way to its destination, which is good -- though it makes me wonder why the other two pieces of data didn't follow suite.
Totally lost. Also just in my first month of VueJS so it's pretty good that I can even make one string appear where I want it to. \o/
First, you need to remove the $event parameter
<TweetDeck v-on:messageFromTweetDeck="msgReceived"/>
Second, you can optimize the data format passed to the parent component:
sendTweet() {
this.$emit("messageFromTweetDeck",
{ tweet: this.yourTweet, name: this.yourName, handle: this.yourHandle }
);
}
And then modify your msgReceived method:
msgReceived(childData) {
this.tweets.push(childData);
}
Link: codesandbox
Hope to help you:)
I'm trying to build a vue.js template that implements following:
<MyComponent></MyComponent> generates <div class="a"></div>
<MyComponent>b</MyComponent> generates <div class="a" data-text="b"></div>.
Is such a thing possible?
EDIT
Here is the best I can reach:
props: {
text: {
type: [Boolean, String],
default: false
}
},
and template
<template>
<div :class="classes()" :data-text="text">
<slot v-bind:text="text"></slot>
</div>
</template>
but the binding does not work, text always contains false.
You can use the mounted() method to get text using $slot.default property of the component to get the enclosing text. Create a text field in data and update inside mounted() method like this :
Vue.component('mycomponent', {
data: () => ({
text: ""
}),
template: '<div class="a" :data-text=text></div>',
mounted(){
let slot = this.$slots.default[0];
this.text=slot.text;
}
});
Note: It will only work for text, not for Html tags or components.
You're mixing slots and properties here. You'll have to pass whatever you want to end up as your data-text attribute as a prop to your component.
<MyComponent text="'b'"></MyComponent>
And in your template you can remove the slot
<template>
<div :class="classes()" :data-text="text"></div>
</template>
Another thing: it looks like your binding your classes via a method. This could be done via computed properties, take a look if you're not familiar.
You can try this.
<template>
<div :class="classes()">
<slot name="body" v-bind:text="text" v-if="hasDefaultSlot">
</slot>
</div>
</template>
computed: {
hasDefaultSlot() {
console.log(this)
return this.$scopedSlots.hasOwnProperty("body");
},
}
Calling
<MyComponent>
<template v-slot:body="props">
b
</template>
</MyComponent>
I am turning some of my components into re-usable components. I am running into some issues here that I can't figure out. Coming from a React environment, my thoughts are getting jammed up. Basically, I need to be able to make a prop more versatile than just a Boolean or String, or any primitive value. I need to be able to pass "content" to it that could change from page to page depending on what is used for
For example, I have this stateless component:
<template>
<div class="cts-split-grid cts-alt-header">
<div>{{title}}</div>
<div v-if="rightSide" class="cts-split-grid">
<span class="uk-text-small">Pod or station is open</span>
<span class="legend-color"></span>
</div>
</div>
</template>
<script>
export default {
name: "page-alt-header",
props: {
title: {
type: String
},
rightSide: {
type: Boolean
}
},
data() {
return {
value: ""
};
}
};
</script>
That I am using this way
<AltHeader :title="'POD' + currentPodId" rightSide />
As you can see, in the title I am passing an object currentPodId bounded to the component. That was easy since that object only produces a data value.
I want to remove this(below) from the re-usable component and be able to add it in the component using the AltHeader as a rightSide Prop:
<span class="uk-text-small">Pod or station is open</span>
<span class="legend-color"></span>
The reason why is because this component's right side can be anything from an Icon component to a button, to a small block of HTML, etc.
How can I do this? How can I set up rightSide prop to accept anything I pass to it at the component level depending on how I need to use it?
Thanks
You should use slots
<template>
<div class="cts-split-grid cts-alt-header">
<div>{{title}}</div>
<div v-if="rightSide" class="cts-split-grid">
<slot></slot>
</div>
</div>
</template>
and add right Side content as follows :
<AltHeader :title="'POD' + currentPodId" rightSide >
<!-- side right content here -->
</AltHeader>
How can i bind Document.getElementById in vue.js2. I am using embed tweet with javaScript factory function. its working fine if i only take DOM in .html file and generate tweet in vue file but not working if both is in .vue file. i need to use DOM in my .vue file and binds it with to factory function.
I have tried with ref and v-el but not worked.
<template>
<div class="row" id="home">
<h3 v-if="msg"><span class="label label-warning">{{msg}}</span></h3>
</div>
<!--<div v-for="tweet in tweetHtml">
<div v-html="tweet"></div>
</div>-->
</div>
<div id="container" ></div> <!-- generated tweet from fun should bind here -->
</template>
<script>
import appService from '../service'
import bus from '../service/bus'
export default {
data() {
return {
searchedTopic: '',
user_id: '',
tweets: {},
tweetHtml: []
}
},
created() {
// generate tweet with javaScript factory fun <<---=-=-=-=
twttr.widgets.createTweet('20',
document.getElementById('container'), // <<-- what to do to bind container with vue file's div.
{
theme: 'light'
})
.then( function( el ) {
console.log('Tweet added.');
});
},
methods: {
}
}
</script>
If you just get the DOM node, use ref can work.
twttr? what's this?
I have seen examples of using the HTML 5 template tag with a repeat attribute to perform two-way data binding (similar to AngularJS):
<template repeat="{{items}}">
<a href="{{link}}">
<img src="{{image}}" />
</a>
</template>
With associated JavaScript model:
template.model = {
items: [ {
link: '...'
image: '...'
} ]
Fiddle here: http://jsfiddle.net/falafelsoftware/8fa8g
It doesn't seem like repeat should be a requirement for this behaviour, but as soon as I remove it:
<template>
<a href="{{link}}">
<img src="{{image}}" />
</a>
</template>
And adjust the model accordingly:
template.model = {
link: '...'
image: '...'
I can't get anything to render: http://jsfiddle.net/8fa8g/9/
Can template be used without repeat?
The correct answer (as I found following CletusW's link) seems to be the bind attribute:
<template bind="{{item}}">
<a href="{{link}}">
<img src="{{image}}" />
</a>
</template>
This still requires an annoying level of indirection in the model:
template.model = {
item: {
link: '...'
image: '...'
}
But appears to work in both FF and Chrome.
However, as CletusW further points outs, it's not clear what specification this is defined in?