I am trying to create a dropdown (v-select/q-select (using quasar)), which allows me to select from an array in my vuex-storage and then eventually save the selected item (content of it) in a variable. Currently I have no problem to access the vuex-storage, but face the problem, that the v-select expects a string and not an object.
My code looks like the following.
// vuex storage:
const state = {
savedsystems:
[
id: "1",
system: {...}
],
[
id: "2",
system: {...}
]
// example of the vuex storage out of my viewdevtools
systemsconstant: Object
savedsystems:Array[2]
0:Object
id:"first"
system:Object
7a73d702-fc28-4d15-a54c-2bb950f7a51c:Object
name:"3"
status:"defined"
88519419-8a81-48f1-a5e6-5da77291b848:Object
name:"5"
status:"not defined"
1:Object
id:"second"
system:Object
7a73d702-fc28-4d15-a54c-2bb950f7a51c:Object
name:"3"
status:"not defined"
88519419-8a81-48f1-a5e6-5da77291b848:Object
name:"9"
status:"defined"
}
// dropdown:
<q-select
outlined
dense
emit-value
:value="currentsystem"
:options="savedsystems"
label="selectsystem" />
// computed to get systems from vuex:
computed: {
savedsystems() {
return this.$store.getters['systemsconstant/getsavedsystems']
}
},
I used the following example https://codepen.io/sagalbot/pen/aJQJyp as inspiration and tried a couple of different setups stringifying resulting in nothing really.
If one would try to apply my case to a similar problem (v-select displays object Object), the mentioned formatlabel would be an object instead of a string.
Question:
How can I modify the (with a getter) imported array of objects "savedsystems", so it can be used both as label to select it and furthermore then to connect it properly to the values, so I can save the selected as a variable.
Or can I change something in my v-select, e.g. varying what comes behind :options/options?
I'd appreciate any help!
You should use the property option-label
<div id="q-app">
<div class="q-pa-md" style="max-width: 300px">
<div class="q-gutter-md">
<q-badge color="secondary" multi-line>
Model: "{{ model }}"
</q-badge>
<q-select filled v-model="model" :options="options" label="Standard" option-label="description"></q-select>
{{ model }}
</div>
</div>
</div>
JS:
new Vue({
el: '#q-app',
data () {
return {
model: null,
options: [
{
label: 'Google',
value: 'Google',
description: 'Search engine',
category: '1'
},
{
label: 'Facebook',
value: 'Facebook',
description: 'Social media',
category: '1'
},
{
label: 'Twitter',
value: 'Twitter',
description: 'Quick updates',
category: '2'
},
]
}
}
})
https://codepen.io/reijnemans/pen/bGpqJYx?editors=1010
Related
How can I access/convert element.varName string in v-for loop to be passed as variable name to get the current value of this boolean.
In the following case:
<div v-for="(element, index) in elements" :key="index" :class="{included : element.varName, 'cur-el':selected==element.shortName}">
<div v-html="element.icon"></div>
{{element.name}}
</div>
el1: false,
el2: false,
selected: undefined,
elements: [
{
name: 'element 1',
icon: `<svg>
<path></path>
<rect></rect>
</svg>`,
shortName: 'el1',
varName: this.el1
},
/...
]
How can my included class be a boolean value instead of the actual string, initially I tried with the shortName used accessing it as follow:
element.shortName
which didn't work, also tried:
[element.shortName]
as well as:
this[element.shortName]
None of which seems to work, so I tried including the actual reference to that variable by adding it in the object varName: this.el1, which also didn't work.
What am I doing wrong?
Since you're referencing a data property in other one you should define the second property as computed property :
data(){
return {
el1: false,
el2: false,
selected: undefined,
}
},
computed:{
elements(){
return [
{
name: 'element 1',
icon: `<svg>
<path></path>
<rect></rect>
</svg>`,
shortName: 'el1',
varName: this.el1
}
]
}
}
The reason why varName: this.el1 is not updated inside data option, is because it's not reactive.
You can read about that in Vue official documentation here.
Back to your question :
Try to assign the whole elements array in mounted() life cycle hook. So, that you can access this.el1.
Demo :
new Vue({
el:"#app",
data: {
el1: false,
el2: true,
elements: []
},
mounted() {
this.elements = [
{
name: 'element 1',
shortName: 'el1',
varName: this.el1
}, {
name: 'element 2',
shortName: 'el2',
varName: this.el2
}
]
}
});
.included {
background-color: yellow
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<div v-for="(element, index) in elements" :key="index" :class="{included : element.varName}">
{{element.name}}
</div>
</div>
I am using Bootstrap Vue to render a select input. Everything is working great - I'm able to get the value and change the UI based on the option that was selected.
I am trying to change the headline text on my page - to be the text of the selected option. I am using an array of objects to render the options in my select input.
Here is what I'm using for my template:
<b-form-group
id="mySelect"
description="Make a choice."
label="Choose an option"
label-for="mySelect">
<b-form-select id="mySelect"
#change="handleChange($event)"
v-model="form.option"
:options="options"/>
</b-form-group>
Here is what my data/options look like that I'm passing to the template:
...
data: () => ({
form: {
option: '',
}
options: [
{text: 'Select', value: null},
{
text: 'Option One',
value: 'optionOne',
foo: {...}
},
{
text: 'Option Two',
value: 'optionTwo',
foo: {...}
},
}),
methods: {
handleChange: (event) => {
console.log('handleChange called');
console.log('event: ', event); // optionOne or optionTwo
},
},
...
I can get optionOne or optionTwo, what I'd like to get is Option One or Option Two (the text value) instead of the value value. Is there a way to do that without creating an additional array or something to map the selected option? I've also tried binding to the actual options object, but haven't had much luck yet that route either. Thank you for any suggestions!
Solution
Thanks to #Vuco, here's what I ended up with. Bootstrap Vue passes all of the select options in via :options. I was struggling to see how to access the complete object that was selected; not just the value.
Template:
<h1>{{ selectedOption }}</h1>
<b-form-group
id="mySelect"
description="Make a choice."
label="Choose an option"
label-for="mySelect">
<b-form-select id="mySelect"
v-model="form.option"
:options="options"/>
</b-form-group>
JS:
...
computed: {
selectedOption: function() {
const report = this.options.find(option => option.value === this.form.option);
return option.text; // Option One
},
methods: {
//
}
...
Now, when I select something the text value shows on my template.
I don't know Vue bootstrap select and its events and logic, but you can create a simple computed property that returns the info by the current form.option value :
let app = new Vue({
el: "#app",
data: {
form: {
option: null,
},
options: [{
text: 'Select',
value: null
},
{
text: 'Option One',
value: 'optionOne'
},
{
text: 'Option Two',
value: 'optionTwo'
}
]
},
computed: {
currentValue() {
return this.options.find(option => option.value === this.form.option)
}
}
});
<div id="app">
<b-form-group id="mySelect" description="Make a choice." label="Choose an option" label-for="mySelect">
<b-form-select id="mySelect" v-model="form.option" :options="options" />
</b-form-group>
<p>{{ currentValue.text }}</p>
</div>
Here's a working fiddle.
You have an error in your dictionary.
Text is showed as an option.
Value is what receive your variable when option is selected.
Is unneccesary to use computed property in this case.
let app = new Vue({
el: "#app",
data: {
form: {
option: null,
},
options: [{
value: null,
text: 'Select'
},
{
value: 'Option One',
text: 'Option One'
},
{
value: 'Option Two',
text: 'Option Two'
}
]
}
});
Fiddle with corrections
Documentation
I have an array of objects (users) gotten by an api request. Its structure is something like this:
api response: (5) [{…}, {…}, {…}, {…}, {…}]
Inside this array, the objects are like this:
0: {
user_address_string: ('Street 1')
id: (3)
avatar: (img')
...
user: {
id: 1
first_name: 'Lucas'
last_name: 'Smith'
}
},
1: {...},
2: {...},
....
]
It is just a sample just to show you the structure.
As you can see, among its properties there's another object named user{}.
I need to display only the properties contained in this object.
I would like to keep the structure of the table I was using before I got this new api (which didn't have objects as properties).
<b-table
responsive
v-if="users && users.length > 0"
:fields="fields"
:items="users"
>
The template should be something like this:
<template slot-scope="data">
{{ data.item.user }}
</template>
data.item should be the single user in the users array of objects, and with .user I should be able to access the properties of its object property user. (Going further data.item.user.first_name, etc, to access the single properties in it). What am I missing?
Nothing is rendered on the screen.
No errors in the console though.
In the script I have:
users: [],
fields: [
{ key: 'id', label: 'ID'},
{ key: 'name', label: 'Name' }
]
So, how should I write the template for displaying the nested object’s properties?
Also, the directive v-if="users && users.length > 0" in the b-table should still work, right? It is still an array, but of objects this time. Please correct me if I am wrong.
Thank you
You can specify nested field keys in dotted notation:
export default {
data() {
return {
users: [],
fields: [
{ key: 'id', label: 'ID'},
{ key: 'user.first_name', label: 'First Name' },
{ key: 'user.last_name', label: 'Last Name' }
]
}
}
As #Troy Morehouse suggested, I just needed to redefine the fields definition as
{ key: 'user.first_name', label: 'First name' }
**UPDATE after #artworkjpm comment:
The HTML code should be something like this:
<b-table
v-if="users && users.length > 0 && !isLoading"
id="table-transition-userList"
:key="users.id"
responsive
:tbody-tr-class="userStatus"
:tbody-transition-props="transProps"
:fields="fields"
:items="users"
>
<template
v-slot:cell(fullName)="data"
>
{{ data.item.user.first_name }} {{ data.item.user.last_name }}
</template>
<template
v-slot:cell(buttons)="data"
>
<b-button
v-b-tooltip.hover
title="See plan"
class="btn-plan p2"
variant="primary"
:disabled="!data.item.user.is_active"
#click.prevent="seePlan(data.item), selectUser(data.item)"
>
<span class="svg-container">
<svg-icon icon-class="route" />
</span>
</b-button>
</template>
</b-table>
**Minor change in fields, but the concept is the same:
fields: [
{ key: 'fullName', label: 'User' },
{ key: 'buttons', label: 'Operations' }
],
Hope it helps.
xx
Whereever you get your data, you can extract the property you want and save locally in this case it would look something like this:
data()
return {
users: []
}
methods: {
async getUsersFromApi(){
const { data: {users }} = await axios.get(...)
users.map(user => {
this.users.push(user.user)
}
An easy way to do it is by using a formatter in fields definition:
data() {
return {
fields: [
{
key: "avg_score",
label: this.$t("avgScore"),
sortable: true,
sortByFormatted: true,
formatter: (value, key, item) => item.stats.avg_score?.text
},
],
items: [...your item list]
}
}
And in the template:
<b-table :items="items" :fields="fields"></b-table>
The formatter will print the specified key or value automatically.
Vue has a good example of using multiple checkboxes with the same name attribute bound to the same array using v-model
However, I can't use v-model for some reason so I must use #input to emit checked while keeping the value unchanged.
Its not working for me though, all the checkboxes are checked/unchecked at the same time or I have to change the value which I don't want.
Is there a workaround?
Code: https://codesandbox.io/s/71pm2wllp1?fontsize=14
Vue generates special code when compiling a template containing checkboxes bound in this way. Since you're not using v-model, you'll have to handle this functionality yourself.
Try something like this:
new Vue({
el: '#app',
data: {
checkboxes: [
{ name: 'jack', value: 'Jack' },
{ name: 'bob', value: 'Bob' },
{ name: 'alice', value: 'Alice' },
],
model: [],
},
computed: {
modelJson() {
return JSON.stringify(this.model);
},
},
methods: {
handleChange(value, checked) {
if (checked) {
this.model = this.model.concat(value);
} else {
this.model = this.model.filter(x => x !== value);
}
},
},
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
<div v-for="checkbox of checkboxes" :key="checkbox.name">
<input
type="checkbox"
:id="checkbox.name"
:name="checkbox.name"
:value="checkbox.value"
:checked="model.includes(checkbox.value)"
#change="handleChange(checkbox.value, $event.target.checked)"
/>
<label :for="checkbox.name">{{ checkbox.value }}</label>
</div>
<pre>{{ modelJson }}</pre>
</div>
I have to create a dynamic form in vue2. I want to save the values of the dynamic fields in an named object so that I can pass them along on submit.
The following code is working fine except I get an error in the console when I change the input value the first time (value will be propagated correctly though):
[TypeError: Cannot read property '_withTask' of undefined]
Here is how I define the props:
props: {
fields: {
type: Object,
default: {startWord: 'abc'}
},
},
And this is how I populate the model from the input field:
v-model="fields[field.id]"
Here is the entire code:
<template>
<div>
<!-- Render dynamic form -->
<div v-for="(field, key) in actionStore.currentAction.manifest.input.fields">
<!-- Text -->
<template v-if="field.type == 'string'">
<label>
<span>{{key}} {{field.label}}</span>
<input type="text" v-bind:placeholder="field.placeholder"
v-model="fields[field.id]"/>
</label>
</template>
<!-- Footer -->
<footer class="buttons">
<button uxp-variant="cta" v-on:click="done">Done</button>
</footer>
</div>
</template>
<script>
const Vue = require("vue").default;
const {Bus, Notifications} = require('../../Bus.js');
module.exports = {
props: {
fields: {
type: Object,
default: {startWord: 'abc'}
},
},
computed: {
actionStore() {
return this.$store.state.action;
},
},
methods: {
done() {
console.log('fields', this.fields);
Bus.$emit(Notifications.ACTION_INPUT_DONE, {input: this.fields});
}
},
}
</script>
So again, everything is working just fine (showing initial value in input, propagating the new values to the model etc.). But I get this '_withTask' error when I first enter a new character (literally only on the first keystroke). After that initial error it doesn't pop up again.
-- Appendix --
This is what the manifest/fields look like:
manifest.input = {
fields: [
{ id: 'startWord', type: 'string', label: 'Start word', placeholder: 'Enter start word here...' },
{ id: 'startWordDummy', type: 'string', label: 'Start word dummy', placeholder: 'Enter start word here...' },
{ id: 'wordCount', type: 'integer', label: 'Word count' },
{ id: 'clean', type: 'checkbox', label: 'Clean up before' },
]
}
-- Update --
I just discovered that if I set the dynamic field values initially with static values I don't get the error for those fields set this way:
created() {
this.fields.startWord = 'abc1';
},
But this is not an option since it will be a dynamic list of fields. So what is the best way to handle scenarios like this?
From documentation: Due to the limitations of modern JavaScript (and the abandonment of Object.observe), Vue cannot detect property addition or deletion. Since Vue performs the getter/setter conversion process during instance initialization, a property must be present in the data object in order for Vue to convert it and make it reactive.
As I understand it's bad idea create keys of your object by v-model.
What would I do in HTML:
<input type="text"
:placeholder="field.placeholder"
#input="inputHandler(event, field.id)" />
Then in JS:
methods: {
// ...
inputHandler({ target }, field) {
this.fields[field] = target.value;
}
},