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search bar in Vue select hovered list items

I wonder how can I by clicking the individual string item of the bottom list send it's value to the input ? I mean when I click on the "car" the input gets filled with "car". I assume I'm setting incorrect params to selectCategorie method
<template>
<input type="text" v-model="input" placeholder="Search vehicle..." />
<div v-for="(categorie, index) in filteredList()" :key="categorie">
<p #onClick="selectCategorie(index)" >{{ categorie }}</p>
</div>
<div v-if="input&&!filteredList().length">
<p>No results found!</p>
</div>
</template>
<script>
export default {
data() {
return {
input: '',
categoriesStatic: ['car', 'bus', 'moto', 'bike' ]
}
},
methods: {
filteredList() {
return this.categoriesStatic.filter((categ) =>
categ.toLowerCase().includes(this.input.toLowerCase())
);
},
selectCategorie(index) {
this.input = categorie(index)
}
}
}
</script>

How to pass dynamically props from one child component to another on the parent page

I have two child components I have to pass dynamically props from first child to parent and from parent to second child.
Parent
<script>
data: () => ({
model: {}
}),
methods: {
changeData(payload) {
this.model.personalData = {...payload}
}
}
</script>
<template>
<first-child #changeData="(payload) => changeData(payload)"/>
<second-child :enter-object="model" />
</template>
Child one
<script>
data: () => ({
model: {}
}),
methods: {
changeData() {
this.$emit("changeData", this.model);
}
}
</script>
<template>
<v-text-field v-model="model.name" #input="changeData()">
<v-text-field v-model="model.email" #input="changeData()">
</template>
Child two
<script>
props: {
enterObject: {
type: Object,
required: false,
default: () => ({})
}
},
data: () => ({
model: {}
}),
watch: {
enterObject: {
immediate: true,
handler() {
Object.assign(this.model.personalData, this.enterObject.personalData);
}
}
</script>
<template>
<div>
<div v-if="model.personalData.name || model.personalData.email">
<span class="mr-3">{{ model.personalData.name }}</span>
<span>{{ model.personalData.email }}</span>
</div>
<div v-else>
No data
</div>
</div>
</template>
I get data in parent component with no problem, but this data doesn't pass to second child, why I have always "No data" ?

I tested your code and found a few things:
You need to create "personalData" inside the model in "childTwo".
<template>
<div>
// I changed the validation for personalData
<div v-if="model.personalData">
<span class="mr-3">{{ model.personalData.name }}</span>
<span>{{ model.personalData.email }}</span>
</div>
<div v-else>No data</div>
</div>
</template>
export default {
props: {
enterObject: {
type: Object,
required: false,
default: () => ({})
}
},
data: () => ({
model: {
personalData: {}
}
}),
watch: {
enterObject: {
deep: true,
handler() {
// Add a validation in the handler, you can use Object assign inside the validation.
if(this.enterObject) {
Object.assign(this.model.personalData, this.enterObject.personalData)
}
}
}
}
It's worked for me.I hope it helps you.

You have to assign the value of the object using this.$set for more about object reactivity click here
your Parent component should be like this:-
here is the working example
<template>
<div>
<first-child #change-data="(payload) => changeData(payload)" />
<second-child :enter-object="model" />
</div>
</template>
<script>
import FirstChild from "./FirstChild";
import SecondChild from "./SecondChild";
export default {
data: () => ({
model: {},
compKey: 0,
}),
components: {
FirstChild,
SecondChild,
},
methods: {
changeData(payload) {
this.$set(this.model, "test", payload);
//this.model.test = payload;
},
},
};
</script>

How to get rid of cloning / duplication of elements in vue?

I'm a beginner programmer and I create a spa like trello. Creates boards. In the board creates lists, they are displayed different with different id, but the list items are displayed with the same id and they are duplicated in each list. Sorry for my english:) Help me, please and tell in detail what the problem is.. Thank you very much
vuex file router.js
import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)
export default new Vuex.Store({
state: {
boards: JSON.parse(localStorage.getItem('boards') || '[]'),
lists: [],
items: []
// items: JSON.parse(localStorage.getItem('items') || '[]')
// lists: JSON.parse(localStorage.getItem('lists') || '[]')
},
mutations: {
addBoard(state, board) {
state.boards.push(board)
localStorage.setItem('boards', JSON.stringify(state.boards))
},
addList(state, list) {
state.lists.push(list)
// localStorage.setItem('lists', JSON.stringify(state.lists))
},
createItemListt(state, item) {
state.items.push(item)
// localStorage.setItem('items', JSON.stringify(state.items))
}
},
actions: {
addBoard({commit}, board) {
commit('addBoard', board)
},
addList({commit}, list) {
commit('addList', list)
},
createItemListt({commit}, item) {
commit('createItemListt', item)
}
},
getters: {
boards: s => s.boards,
taskById: s => id => s.boards.find(t => t.id === id),
lists: d => d.lists,
items: a => a.items
},
modules: {
}
})
the page on which the lists are created MyBoard.vue
<template>
<div>
<div class="wrapper">
<div class="row">
<h1>{{board.title}}</h1>
<div class="list " v-for="list in lists" :key="list.idList">
<div class="list__title">
<h3>{{list.titleList}}</h3>
</div>
<div class="list__card" v-for="item in items" :key="item.idItemList">
<span class="list__item">{{item.itemList}}</span>
<a class="btn-floating btn-tiny btn-check" tag="button">
<i class="material-icons">check</i>
</a>
</div>
<createItemList />
</div>
<createList />
</div>
</div>
</div>
</template>
<script>
export default {
computed: {
board() {
return this.$store.getters.taskById(+this.$route.params.id);
},
lists() {
return this.$store.getters.lists;
},
items() {
return this.$store.getters.items;
}
},
components: {
createList: () => import("../components/createList"),
createItemList: () => import("../components/createItemList")
}
};
</script>
CreateList.Vue
<template>
<div>
<div class="row">
<div class="new-list" v-show="isCreating">
<div class="list__title input-field">
<input
type="text"
required
id="list-title"
class="none validate"
tag="button"
autofocus
v-model="titleList"
v-on:keyup.enter="createList"
/>
<label for="list-title">Enter Title List</label>
</div>
<a class="btn-floating transparent btn-close" tag="button" #click="closeList">
<i class="material-icons">close</i>
</a>
</div>
<div class="create-list z-depth-2" v-show="!isCreating">
<p>Create list</p>
<a
class="btn-floating btn-large waves-effect waves-light deep-purple lighten-2 pulse"
tag="button"
#click="addList"
v-on:keyup.enter="addList"
>
<i class="material-icons">add</i>
</a>
</div>
</div>
</div>
</template>
<script>
export default {
data: () => ({
isCreating: false,
titleList: "",
idList: ""
}),
methods: {
addList() {
this.isCreating = true;
},
closeList() {
this.isCreating = false;
},
createList() {
if (this.titleList == "") {
return false;
}
const list = {
idList: Date.now(),
titleList: this.titleList
};
this.$store.dispatch("addList", list);
this.titleList = "";
this.isCreating = false;
console.log(list.titleList);
}
}
};
</script>
CreateItemList.vue
<template>
<div>
<div class="add-item">
<div class="textarea-item input-field" v-show="isAdding">
<input
type="text"
class="validate"
id="list-item"
v-model="itemList"
v-on:keyup.enter="createItemList"
autofocus
/>
<label for="list-item">Enter Item List</label>
</div>
<a class="waves-effect waves-light btn" v-show="!isAdding" #click="addCard">
<i class="material-icons right">add</i>Add Card
</a>
</div>
</div>
</template>
<script>
export default {
data: () => ({
isAdding: false,
itemList: "",
}),
methods: {
addCard() {
this.isAdding = true;
},
createItemList() {
if (this.itemList == "") {
return false;
}
const item = {
idItemList: Date.now(),
itemList: this.itemList
};
this.$store.dispatch("createItemListt", item);
this.itemList = "";
this.isAdding = false;
}
}
};
</script>
attach photo

Tried to go with the basic idea of the structure you laid out. I added:
id to all items, so they can be identifed
children to appropriate items, so you can keep track of what's in them
const store = new Vuex.Store({
state: {
tables: [
{ id: 1, children: ['1.1', '1.2'] },
{ id: 2, children: ['2.1'] }
],
lists: [
{ id: '1.1', children: ['1.1.1'] },
{ id: '1.2', children: ['1.2.1'] },
{ id: '2.1', children: ['2.1.1', '2.1.2'] },
],
cards: [
{ id: '1.1.1' },
{ id: '1.2.1' },
{ id: '2.1.1' },
{ id: '2.1.2' },
]
},
mutations: {
ADD_CARD(state, listId) {
const list = state.lists.find(e => e.id === listId)
const cards = state.cards
const card = { id: Date.now() }
cards.push( card )
list.children.push( card.id )
},
ADD_LIST(state, tableId) {
const table = state.tables.find(e => e.id === tableId)
const lists = state.lists
const list = { id: Date.now(), children: [] }
lists.push( list )
table.children.push( list.id )
},
ADD_TABLE(state) {
const tables = state.tables
const table = { id: Date.now(), children: [] }
tables.push( table )
},
TRY_MOVING_LIST(state) {
const table1 = state.tables.find(e => e.id === 1)
const table2 = state.tables.find(e => e.id === 2)
const item = table1.children.pop() // remove the last item
table2.children.push(item)
}
},
actions: {
addCard({ commit }, listId) {
commit('ADD_CARD', listId)
},
addList({ commit }, tableId) {
commit('ADD_LIST', tableId)
},
addTable({ commit }) {
commit('ADD_TABLE')
},
tryMovingList({ commit }) {
commit('TRY_MOVING_LIST')
}
},
getters: {
getTables: s => s.tables,
getListById: s => id => s.lists.find(e => e.id === id),
getCardById: s => id => s.cards.find(e => e.id === id),
}
})
Vue.component('CustomCard', {
props: ['card'],
template: `<div>
card ID: {{ card.id }}<br />
</div>`
})
Vue.component('CustomList', {
props: ['list'],
template: `<div>
list ID: {{ list.id }}<br />
<custom-card
v-for="item in list.children"
:key="item"
:card="getCard(item)"
/>
<button #click="addCard">ADD CARD +</button>
<hr />
</div>`,
methods: {
getCard(id) {
return this.$store.getters.getCardById(id)
},
addCard() {
this.$store.dispatch('addCard', this.list.id)
}
}
})
Vue.component('CustomTable', {
props: ['cTable'],
template: `<div>
table ID: {{ cTable.id }}<br />
<custom-list
v-for="item in cTable.children"
:key="item"
:list="getList(item)"
/>
<button #click="addList">ADD LIST +</button>
<hr />
</div>`,
methods: {
getList(id) {
return this.$store.getters.getListById(id)
},
addList(id) {
this.$store.dispatch('addList', this.cTable.id)
}
}
})
new Vue({
el: "#app",
store,
computed: {
tables() {
return this.$store.state.tables
}
},
methods: {
addTable() {
this.$store.dispatch('addTable')
},
tryMovingList() {
// this function will move the last list in table ID 1
// to the end of table ID 2's lists
// NOT FOOLPROOF - you should add error handling logic!
this.$store.dispatch('tryMovingList')
}
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<script src="https://unpkg.com/vuex"></script>
<div id="app">
<button #click="tryMovingList()">MOVE LIST</button><br />
<button #click="addTable()">ADD TABLE +</button>
<hr />
<custom-table v-for="item in tables" :key="'table-' + item.id" :c-table="item" />
</div>
With this setup you can change the hierarchy quite easily: just delete an ID from one Array of children and add it to another (e.g. remove '1.1' from table ID 1's children array and add it to table ID 2's children array - everything moved to table ID 2. tryMovingList() does exactly this - this method/action is not foolproof, just for you to try out moving a whole list)
There could be other patterns to solve this problem (like a real linked list data structure or the mediator pattern), but for smaller apps this is OK, I think (I would use it... :) ).
ONE PIECE OF ADVICE
If you want to store state in localStorage on mutations, don't do it by yourself - use Vuex's integrated subscribe mechanism: https://vuex.vuejs.org/api/#subscribe

Filter state in React without removing data

I'm trying to make a react component that can filter a list based on value chosen from a drop-down box. Since the setState removes all data from the array I can only filter once. How can I filter data and still keep the original state? I want to be able to do more then one search.
Array list:
state = {
tree: [
{
id: '1',
fileType: 'Document',
files: [
{
name: 'test1',
size: '64kb'
},
{
name: 'test2',
size: '94kb'
}
]
}, ..... and so on
I have 2 ways that I'm able to filter the component once with:
filterDoc = (selectedType) => {
//way #1
this.setState({ tree: this.state.tree.filter(item => item.fileType === selectedType) })
//way#2
const myItems = this.state.tree;
const newArray = myItems.filter(item => item.fileType === selectedType)
this.setState({
tree: newArray
})
}
Search component:
class SearchBar extends Component {
change = (e) => {
this.props.filterTree(e.target.value);
}
render() {
return (
<div className="col-sm-12" style={style}>
<input
className="col-sm-8"
type="text"
placeholder="Search..."
style={inputs}
/>
<select
className="col-sm-4"
style={inputs}
onChange={this.change}
>
<option value="All">All</option>
{this.props.docTypes.map((type) =>
<option
value={type.fileType}
key={type.fileType}>{type.fileType}
</option>)}
</select>
</div>
)
}
}
And some images just to get a visual on the problem.
Before filter:
After filter, everything that didn't match was removed from the state:

Do not replace original data
Instead, change what filter is used and do the filtering in the render() function.
In the example below, the original data (called data) is never changed. Only the filter used is changed.
const data = [
{
id: 1,
text: 'one',
},
{
id: 2,
text: 'two',
},
{
id: 3,
text: 'three',
},
]
class Example extends React.Component {
constructor() {
super()
this.state = {
filter: null,
}
}
render() {
const filter = this.state.filter
const dataToShow = filter
? data.filter(d => d.id === filter)
: data
return (
<div>
{dataToShow.map(d => <span key={d.id}> {d.text}, </span>)}
<button
onClick={() =>
this.setState({
filter: 2,
})
}
>
{' '}
Filter{' '}
</button>
</div>
)
}
}
ReactDOM.render(<Example />, document.getElementById('root'))
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>
<body>
<div id='root' />
</body>

Don't mutate local state to reflect the current state of the filter. That state should reflect the complete available list, which should only change when the list of options changes. Use your filtered array strictly for the view. Something like this should be all you need to change what's presented to the user.
change = (e) => {
return this.state.tree.filter(item => item.fileType === e.target.value)
}

Vue.js - Computed property not updating - child component

I've created a simple component named DefaultButton.
It bases on properties, that are being set up whenever this component is being created.
The point is that after mounting it, It does not react on changes connected with "defaultbutton", that is an object located in properties
<template>
<button :class="buttonClass" v-if="isActive" #click="$emit('buttonAction', defaultbutton.id)" >
{{ this.defaultbutton.text }}
</button>
<button :class="buttonClass" v-else disabled="disabled">
{{ this.defaultbutton.text }}
</button>
</template>
<script>
export default {
name: "defaultbutton",
props: {
defaultbutton: Object
},
computed: {
buttonClass() {
return `b41ngt ${this.defaultbutton.state}`;
},
isActive() {
return (this.defaultbutton.state === "BUTTON_ACTIVE" || this.defaultbutton.state === "BUTTON_ACTIVE_NOT_CHOSEN");
}
}
};
</script>
Having following component as a parent one:
<template>
<div v-if="state_items.length == 2" class="ui placeholder segment">
{{ this.state_items[0].state }}
{{ this.state_items[1].state }}
{{ this.current_active_state }}
<div class="ui two column very relaxed stackable grid">
<div class="column">
<default-button :defaultbutton="state_items[0]" #buttonAction="changecurrentstate(0)"/>
</div>
<div class="middle aligned column">
<default-button :defaultbutton="state_items[1]" #buttonAction="changecurrentstate(1)"/>
</div>
</div>
<div class="ui vertical divider">
Or
</div>
</div>
</template>
<script type="text/javascript">
import DefaultButton from '../Button/DefaultButton'
export default {
name: 'changestatebox',
data() {
return {
current_active_state: 1
}
},
props: {
state_items: []
},
components: {
DefaultButton
},
methods: {
changecurrentstate: function(index) {
if(this.current_active_state != index) {
this.state_items[this.current_active_state].state = 'BUTTON_ACTIVE_NOT_CHOSEN';
this.state_items[index].state = 'BUTTON_ACTIVE';
this.current_active_state = index;
}
},
},
mounted: function () {
this.state_items[0].state = 'BUTTON_ACTIVE';
this.state_items[1].state = 'BUTTON_ACTIVE_NOT_CHOSEN';
}
}
</script>
It clearly shows, using:
{{ this.state_items[0].state }}
{{ this.state_items[1].state }}
{{ this.current_active_state }}
that the state of these items are being changed, but I am unable to see any results on the generated "DefaultButtons". Classes of objects included in these components are not being changed.
#edit
I've completely changed the way of delivering the data.
Due to this change, I've abandoned the usage of an array; instead I've used two completely not related object.
The result is the same - class of the child component's object is not being
DefaulButton.vue:
<template>
<button :class="buttonClass" v-if="isActive" #click="$emit('buttonAction', defaultbutton.id)" >
{{ this.defaultbutton.text }}
</button>
<button :class="buttonClass" v-else disabled="disabled">
{{ this.defaultbutton.text }}
</button>
</template>
<style lang="scss">
import './DefaultButton.css';
</style>
<script>
export default {
name: "defaultbutton",
props: {
defaultbutton: {
type: Object,
default: () => ({
id: '',
text: '',
state: '',
})
}
},
computed: {
buttonClass() {
return `b41ngt ${this.defaultbutton.state}`;
},
isActive() {
return (this.defaultbutton.state === "BUTTON_ACTIVE" ||
this.defaultbutton.state === "BUTTON_ACTIVE_NOT_CHOSEN");
}
}
};
</script>
ChangeStateBox.vue:
<template>
<div class="ui placeholder segment">
{{ this.state_first.state }}
{{ this.state_second.state }}
{{ this.current_active_state }}
<div class="ui two column very relaxed stackable grid">
<div class="column">
<default-button :defaultbutton="state_first" #buttonAction="changecurrentstate(0)"/>
</div>
<div class="middle aligned column">
<default-button :defaultbutton="state_second" #buttonAction="changecurrentstate(1)"/>
</div>
</div>
<div class="ui vertical divider">
Or
</div>
</div>
</template>
<script type="text/javascript">
import DefaultButton from '../Button/DefaultButton'
export default {
name: 'changestatebox',
data() {
return {
current_active_state: 1
}
},
props: {
state_first: {
type: Object,
default: () => ({
id: '',
text: ''
})
},
state_second: {
type: Object,
default: () => ({
id: '',
text: ''
})
},
},
components: {
DefaultButton
},
methods: {
changecurrentstate: function(index) {
if(this.current_active_state != index) {
if(this.current_active_state == 1){
this.$set(this.state_first, 'state', "BUTTON_ACTIVE_NOT_CHOSEN");
this.$set(this.state_second, 'state', "BUTTON_ACTIVE");
} else {
this.$set(this.state_first, 'state', "BUTTON_ACTIVE");
this.$set(this.state_second, 'state', "BUTTON_ACTIVE_NOT_CHOSEN");
}
this.current_active_state = index;
}
},
},
created: function () {
this.state_first.state = 'BUTTON_ACTIVE';
this.state_second.state = 'BUTTON_ACTIVE_NOT_CHOSEN';
}
}
</script>

You're declaring props wrong. It is either an array of prop names or it is an object with one entry for each prop declaring its type, or it is an object with one entry for each prop declaring multiple properties.
You have
props: {
state_items: []
},
but to supply a default it should be
props: {
state_items: {
type: Array,
default: []
}
},
But your problem is most likely that you're mutating state_items in such a way that Vue can't react to the change

Your main problem is the way you are changing the button state, according with Array change detection vue can't detect mutations by indexing.
Due to limitations in JavaScript, Vue cannot detect the following
changes to an array:
When you directly set an item with the index, e.g.
vm.items[indexOfItem] = newValue When you modify the length of the
array, e.g. vm.items.length = newLength

In case someone will be having the same issue:
#Roy J as well as #DobleL were right.
The reason behind this issue was related with the wrong initialization of state objects.
According to the documentation:
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.
Before reading this sentence, I used to start with following objects as an initial data:
var local_state_first = {
id: '1',
text: 'Realized',
};
var local_state_second = {
id: '2',
text: 'Active'
};
and the correct version of it looks like this:
var local_state_first = {
id: '1',
text: 'Realized',
state: 'BUTTON_ACTIVE'
};
var local_state_second = {
id: '2',
text: 'Active',
state: 'BUTTON_ACTIVE'
};
whereas declaring the main component as:
<change-state-box :state_first="local_state_first" :state_second="local_state_second" #buttonAction="onbuttonAction"/>
Rest of the code remains the same ( take a look at #edit mark in my main post )