使用vuejs在get方法上刷新组件
refreshing component on get method with vuejs
我有一个组件可以在安装阶段解析 json 文件。
问题是:
当我单击一个按钮时,发送另一个 GET 方法以获取另一个 json 文件并将其传输到我的组件。
问题是组件不会用新道具重新加载自己,我的组件显示旧值
如果有人知道如何刷新组件,这是我的代码
<template>
<div class="perturbo">
<div class="col-md-3 btnMenu">
<button v-for="item,index in perturboButtonData.button_list" type="button"
v-bind:style="'background:white'"
class="btn-lg btn-block myBtnClass"
@click="activeButton(index)">
{{item.label}}
</button>
</div>
<div class="col-md-9">
<div class="row">
<graphe
v-for="ana,index in perturboData.ANA"
:key="ana.id"
:data="ana"
:index="index"
type="number"
:timeSpec="perturboData.liste_dates">
</graphe>
</div>
<div class="row">
<graphe
v-for="dig,index in perturboData.DIG"
:key="dig.id"
:index="index"
:data="dig"
type="number"
isDigit="YES"
:timeSpec="perturboData.liste_dates">
</graphe>
</div>
</div>
</div>
</template>
<script>
import axios from 'axios'
import Graphe from './Graphe/Graphe.vue'
export default {
name: 'perturbo',
components : {
'graphe' : Graphe
},
data: function () {
return {
isActivated: false,
perturboData: {},
perturboButtonData: {}
}
},
methods: {
activeButton : function (index) {
console.log(this.perturboButtonData)
axios.get('./static/cgi/' + this.perturboButtonData.button_list[index].link)
.then((response) => {
this.perturboData = response.data;
this.isActivated = true
})
}
},
mounted : function () {
axios.get('./static/cgi/format_json_perturbo.json')
.then((response) => {
this.perturboButtonData = response.data;
})
}
}
</script>
这是我的 graphe 组件的代码
<template>
<div class="graphe">
<vue-chart
:chart-events="chartEvents"
:columns="columns"
:rows="rows"
chart-type="LineChart"
:options="options">
</vue-chart>
</div>
</template>
<script>
export default {
name: 'graphe',
props: {
data: {},
timeSpec : Array,
index: Number,
type: String,
isDigit:String,
},
data: function () {
return {
chartEvents: {
'select': function() {
},
'ready': function() {
}
},
rows: [],
columns: [],
options: {
title: this.data.name,
hAxis: {
},
vAxis: {
ticks : []
},
width: 650,
height: 350,
curveType : 'function'
}
}
},
methods: {
normaliseData : function () {
for (let i = 0; i < this.timeSpec.length; i++) {
this.rows[i] = []
this.rows[i][0] = parseFloat(this.timeSpec[i])
}
this.columns[0] = { 'type': 'number', 'label': 'time' }
for (let i = 0; i < this.data.data.length; i++){
this.columns[i+1] = {'type': this.type ,'label': this.data.data[i].name}
}
for (let i = 0; i < this.timeSpec.length; i++) {
for (let y = 0; y < this.data.data.length; y++) {
this.rows[i][y+1] = parseFloat(this.data.data[y].data[i])
}
}
if (this.isDigit == "YES"){
this.digRow(this.rows)
for (let v = 0; v < this.data.data.length; v ++){
this.options.vAxis.ticks[v] = { v: v, f: this.data.data[v].name}
}
this.options.curveType = ''
}
},
digRow : function (rowTab) {
let newRow = []
let lengthMax = rowTab.length
let rowTmp = []
let index = 0
for (let i = 0; i < lengthMax; i ++){
rowTmp[index] = []
rowTmp[index][0] = rowTab[i][0]
for(let y = 1; y < rowTab[i].length; y ++){
rowTmp[index][y] = rowTab[i][y] + y - 1
}
if (i + 1 !== rowTab.length)
{
newRow = rowTmp[index].slice()
newRow[0] = rowTab[i+1][0]
rowTmp.splice(index+1,0,newRow)
index = index + 2
}
}
this.rows = rowTmp
}
},
mounted: function () {
// // pour les colones
this.normaliseData()
}
}
</script>
编辑:我知道问题出在哪里:
从父级接收的数据在挂载函数上只处理一次! ,这就是为什么它不会在更改时重新加载
我应该在道具上使用观察者吗?我该怎么做
您的更改 属性 不会强制更新视图
To react to state changes, it’s usually better to use a computed
property or watcher.
试试这个变体
watch: {
timeSpec(){
//do something
//this.normaliseData()
}
}
不使用方法规范化数据,而是使用计算的 属性 作为 rows
、columns
和 options
属性。这样,如果任何依赖属性发生变化,它将自动更新。
例如,您的 options
属性 可能是计算得出的 属性,如下所示:
computed: {
options() {
let options = {
title: this.data.name,
hAxis: {
},
vAxis: {
ticks : []
},
width: 650,
height: 350,
curveType : 'function'
};
if (this.isDigit == "YES"){
this.digRow(this.rows)
for (let v = 0; v < this.data.data.length; v ++){
options.vAxis.ticks[v] = { v: v, f: this.data.data[v].name}
}
options.curveType = ''
}
return options;
}
}
现在,每当 this.data
、this.isDigit
或 this.rows
更改时,options
属性 也会更新。
您的 rows
和 columns
属性将如下所示:
rows() {
let rows = [];
for (let i = 0; i < this.timeSpec.length; i++) {
rows[i] = []
rows[i][0] = parseFloat(this.timeSpec[i])
for (let y = 0; y < this.data.data.length; y++) {
rows[i][y+1] = parseFloat(this.data.data[y].data[i])
}
}
return rows;
},
columns() {
let columns = [];
columns[0] = { 'type': 'number', 'label': 'time' }
for (let i = 0; i < this.data.data.length; i++) {
columns[i+1] = {'type': this.type ,'label': this.data.data[i].name}
}
return columns;
},
我有一个组件可以在安装阶段解析 json 文件。
问题是:
当我单击一个按钮时,发送另一个 GET 方法以获取另一个 json 文件并将其传输到我的组件。
问题是组件不会用新道具重新加载自己,我的组件显示旧值
如果有人知道如何刷新组件,这是我的代码
<template>
<div class="perturbo">
<div class="col-md-3 btnMenu">
<button v-for="item,index in perturboButtonData.button_list" type="button"
v-bind:style="'background:white'"
class="btn-lg btn-block myBtnClass"
@click="activeButton(index)">
{{item.label}}
</button>
</div>
<div class="col-md-9">
<div class="row">
<graphe
v-for="ana,index in perturboData.ANA"
:key="ana.id"
:data="ana"
:index="index"
type="number"
:timeSpec="perturboData.liste_dates">
</graphe>
</div>
<div class="row">
<graphe
v-for="dig,index in perturboData.DIG"
:key="dig.id"
:index="index"
:data="dig"
type="number"
isDigit="YES"
:timeSpec="perturboData.liste_dates">
</graphe>
</div>
</div>
</div>
</template>
<script>
import axios from 'axios'
import Graphe from './Graphe/Graphe.vue'
export default {
name: 'perturbo',
components : {
'graphe' : Graphe
},
data: function () {
return {
isActivated: false,
perturboData: {},
perturboButtonData: {}
}
},
methods: {
activeButton : function (index) {
console.log(this.perturboButtonData)
axios.get('./static/cgi/' + this.perturboButtonData.button_list[index].link)
.then((response) => {
this.perturboData = response.data;
this.isActivated = true
})
}
},
mounted : function () {
axios.get('./static/cgi/format_json_perturbo.json')
.then((response) => {
this.perturboButtonData = response.data;
})
}
}
</script>
这是我的 graphe 组件的代码
<template>
<div class="graphe">
<vue-chart
:chart-events="chartEvents"
:columns="columns"
:rows="rows"
chart-type="LineChart"
:options="options">
</vue-chart>
</div>
</template>
<script>
export default {
name: 'graphe',
props: {
data: {},
timeSpec : Array,
index: Number,
type: String,
isDigit:String,
},
data: function () {
return {
chartEvents: {
'select': function() {
},
'ready': function() {
}
},
rows: [],
columns: [],
options: {
title: this.data.name,
hAxis: {
},
vAxis: {
ticks : []
},
width: 650,
height: 350,
curveType : 'function'
}
}
},
methods: {
normaliseData : function () {
for (let i = 0; i < this.timeSpec.length; i++) {
this.rows[i] = []
this.rows[i][0] = parseFloat(this.timeSpec[i])
}
this.columns[0] = { 'type': 'number', 'label': 'time' }
for (let i = 0; i < this.data.data.length; i++){
this.columns[i+1] = {'type': this.type ,'label': this.data.data[i].name}
}
for (let i = 0; i < this.timeSpec.length; i++) {
for (let y = 0; y < this.data.data.length; y++) {
this.rows[i][y+1] = parseFloat(this.data.data[y].data[i])
}
}
if (this.isDigit == "YES"){
this.digRow(this.rows)
for (let v = 0; v < this.data.data.length; v ++){
this.options.vAxis.ticks[v] = { v: v, f: this.data.data[v].name}
}
this.options.curveType = ''
}
},
digRow : function (rowTab) {
let newRow = []
let lengthMax = rowTab.length
let rowTmp = []
let index = 0
for (let i = 0; i < lengthMax; i ++){
rowTmp[index] = []
rowTmp[index][0] = rowTab[i][0]
for(let y = 1; y < rowTab[i].length; y ++){
rowTmp[index][y] = rowTab[i][y] + y - 1
}
if (i + 1 !== rowTab.length)
{
newRow = rowTmp[index].slice()
newRow[0] = rowTab[i+1][0]
rowTmp.splice(index+1,0,newRow)
index = index + 2
}
}
this.rows = rowTmp
}
},
mounted: function () {
// // pour les colones
this.normaliseData()
}
}
</script>
编辑:我知道问题出在哪里:
从父级接收的数据在挂载函数上只处理一次! ,这就是为什么它不会在更改时重新加载
我应该在道具上使用观察者吗?我该怎么做
您的更改 属性 不会强制更新视图
To react to state changes, it’s usually better to use a computed property or watcher.
试试这个变体
watch: {
timeSpec(){
//do something
//this.normaliseData()
}
}
不使用方法规范化数据,而是使用计算的 属性 作为 rows
、columns
和 options
属性。这样,如果任何依赖属性发生变化,它将自动更新。
例如,您的 options
属性 可能是计算得出的 属性,如下所示:
computed: {
options() {
let options = {
title: this.data.name,
hAxis: {
},
vAxis: {
ticks : []
},
width: 650,
height: 350,
curveType : 'function'
};
if (this.isDigit == "YES"){
this.digRow(this.rows)
for (let v = 0; v < this.data.data.length; v ++){
options.vAxis.ticks[v] = { v: v, f: this.data.data[v].name}
}
options.curveType = ''
}
return options;
}
}
现在,每当 this.data
、this.isDigit
或 this.rows
更改时,options
属性 也会更新。
您的 rows
和 columns
属性将如下所示:
rows() {
let rows = [];
for (let i = 0; i < this.timeSpec.length; i++) {
rows[i] = []
rows[i][0] = parseFloat(this.timeSpec[i])
for (let y = 0; y < this.data.data.length; y++) {
rows[i][y+1] = parseFloat(this.data.data[y].data[i])
}
}
return rows;
},
columns() {
let columns = [];
columns[0] = { 'type': 'number', 'label': 'time' }
for (let i = 0; i < this.data.data.length; i++) {
columns[i+1] = {'type': this.type ,'label': this.data.data[i].name}
}
return columns;
},