TextArea Avoid mutating a prop directly since the value will be overwritten - javascript

I know that a similar question has already been dealt with on stackoverflow. But I could not put together a solution from the proposed one. I am very ashamed.
The essence is this: I have a component and another one inside it.
The child component-VClipboardTextField is a ready-made configured text-area. I couldn't get the input out of there and I don't get an error when I try to enter it.
Avoid mutating a prop directly since the value will be overwritten
whenever the parent component re-renders. Instead, use a data or
computed property based on the prop's value. Prop being mutated:
"message"
code tabs-item.vue
<template>
<v-container fluid>
<v-row align="center">
<v-col cols="9">
<v-card flat>
<v-card-text>
<h1>Request</h1>
<v-container>
<v-textarea v-model="message"
placeholder="Placeholder"
label="Request"
auto-grow
clear-icon="mdi-close-circle-outline"
clearable
rows="10"
row-height="5"
#click:clear="clearMessage"
></v-textarea>
<v-textarea v-model="response"
placeholder="Placeholder"
label="Request2"
auto-grow
counter
rows="10"
row-height="5"
color="success"
></v-textarea>
<VClipboardTextField ></VClipboardTextField>
<VClipboardTextField isReadOnly></VClipboardTextField>
</v-container>
<v-row>
<v-btn
dark
color="primary"
elevation="12"
justify="end"
float-right
#click="sendRequest"
>
Send Request
</v-btn>
</v-row>
</v-card-text>
</v-card>
</v-col>
<v-col cols="3">
<schema-selector #changeSchema="onChangeSchema"></schema-selector>
</v-col>
</v-row>
</v-container>
</template>
<script>
export default {
name: 'tabs-item',
props: ['response'],
data() {
return {
schema: String,
message: '',
}
},
methods: {
sendRequest() {
const message = {
message: this.message,
method: this.schema.state
}
this.$emit('sendRequest', message)
},
clearMessage() {
this.message = ''
},
onChangeSchema(selectS) {
console.log("get schema: ", selectS.state)
this.schema = selectS
}
},
}
</script>
and child VClipboardTextField.vue
<template>
<v-container>
<v-tooltip bottom
v-model="show">
<template v-slot:activator="{ on, attrs }">
<v-textarea
v-model="message"
:append-outer-icon="'mdi-content-copy'"
:readonly="isReadOnly"
auto-grow
filled
counter
clear-icon="mdi-close-circle-outline"
clearable
label="Response message"
type="text"
#click:append-outer="copyToBuffer"
#click:clear="clearMessage"
></v-textarea>
</template>
<span>Tooltip</span>
</v-tooltip>
</v-container>
</template>
<script>
export default {
name: 'VClipboardTextField',
props: {
isReadOnly: Boolean,
message : { type :String, default: "msg"}
},
data() {
return {
show: false,
// messageLocal: 'Response!',
iconIndex: 0,
}
},
methods: {
copyToBuffer() {
console.log("this: ", this)
navigator.clipboard.writeText(this.message);
this.toolTipChange()
setTimeout(() => this.toolTipChange(), 1000)
},
clearMessage() {
this.message = ''
},
toolTipChange() {
if (this.show)
this.show = false
}
}
}
</script>
I will be glad to see an example of the code that will explain how to correctly solve this problem without crutches!
Thanks.

you cannot modify props in components, if the initial value of message is needed as placeholder (meaning the input might not be empty at the begining), you can store the data in message prop to another data variable and use that as v-model to the textarea.
if there is no initial value for message, just use another data variable for textarea and emit an update for message in a watcher.
in code tabs-item.vue
<VClipboardTextField :message.sync="message"></VClipboardTextField>
and child VClipboardTextField.vue
<template>
<v-container>
<v-tooltip bottom
v-model="show">
<template v-slot:activator="{ on, attrs }">
<v-textarea
v-model="message_slug"
:append-outer-icon="'mdi-content-copy'"
:readonly="isReadOnly"
auto-grow
filled
counter
clear-icon="mdi-close-circle-outline"
clearable
label="Response message"
type="text"
#click:append-outer="copyToBuffer"
#click:clear="clearMessage"
></v-textarea>
</template>
<span>Tooltip</span>
</v-tooltip>
</v-container>
</template>
<script>
export default {
name: 'VClipboardTextField',
props: {
isReadOnly: Boolean,
message : { type :String, default: "msg"}
},
data() {
return {
show: false,
// messageLocal: 'Response!',
iconIndex: 0,
message_slug: '',
}
},
watch: {
message_slug(x) {
this.$emit('update:message', x)
}
},
}
</script>
It will bind the value to message_slug and update the message on parent component when it's value changes.

Instead of watching for change every time, you can only emit when there are changes.
In your tabs-item.vue
<VClipboardTextField v-model="message"></VClipboardTextField>
In your VClipboardTextField.vue component, you can receive the v-model input prop as a "VALUE" prop and assign it to a local data property. That way u can manipulate the local property and emit only when in it is changed!
<template>
<v-container>
<v-tooltip bottom v-model="show">
<template v-slot:activator="{ on, attrs }">
<v-textarea
v-model="message"
:append-outer-icon="'mdi-content-copy'"
:readonly="isReadOnly"
v-on="on"
v-bind="attrs"
auto-grow
filled
counter
clear-icon="mdi-close-circle-outline"
clearable
label="Response message"
type="text"
#click:append-outer="copyToBuffer"
#click:clear="clearMessage"
#change="$emit('input', v)"
></v-textarea>
</template>
<span>Tooltip</span>
</v-tooltip>
</v-container>
</template>
<script>
export default {
name: "VClipboardTextField",
props: {
isReadOnly: { type: Boolean },
value: {
type: String,
},
},
data() {
return {
show: false,
message: this.value,
};
},
};
</script>

Related

After calling add method from vuex second argument doesn't apply

I create vuex with addNews method Inside of it and pass two arguments, title and body of item. But after calling that method inside my component it only prints my first argument title in HTML. Also i try to console.log body and i get data
This is my method in vuex
async addNews({ commit }, title, body) {
const response = await axios.post(
`https://jsonplaceholder.typicode.com/posts`,
{ title: title, body: body }
);
commit("addNews", response.data);
},
And here is component where I call it
<template>
<div class="text-center">
<v-dialog v-model="dialog" width="500">
<template v-slot:activator="{ on, attrs }">
<v-btn class="mb-5" fab dark color="primary" v-bind="attrs" v-on="on">
<v-icon dark> mdi-plus </v-icon>
</v-btn>
</template>
<v-card>
<v-card-title class="text-h5 blue lighten-2">
ADD NEW POST
</v-card-title>
<v-text-field v-model="title" required></v-text-field>
<v-text-field v-model="body" required></v-text-field>
<v-divider></v-divider>
<v-card-actions>
<v-spacer></v-spacer>
<v-btn
color="primary"
class="mr-4"
#click="
onSubmit();
dialog = false;
"
>
Do It
</v-btn>
</v-card-actions>
</v-card>
</v-dialog>
</div>
</template>
<script>
import { mapActions } from "vuex";
export default {
name: "AddNews",
data() {
return {
title: "",
body: "",
dialog: false,
};
},
methods: {
...mapActions(["addNews"]),
onSubmit() {
this.addNews(this.title, this.body);
this.title = "";
this.body = "";
},
},
};
</script>
Try passing an object with arguments to your action:
async addNews({ commit }, { title, body }) {
const response = await axios.post(
`https://jsonplaceholder.typicode.com/posts`,
{ title, body }
);
commit("addNews", response.data);
},

Vue.js & vuex handling SMS by server-side-events

I have a app, which is basically a Call centrum. You can receive calls, call to someone, receive sms and send sms etc.. I have problem with showing my SMS on screen, when I receive event from backend, I am showing that data on screen using vuex and V-for for specific component. Problem is that when I receive another event from backend with different number, I would like to show it under that first sms, but it will overwrite first sms and show only that new sms. I was trying multiple approaches, but nothing worked for me so I hope someone will be able to show me my mistake.
Here is photo of screen with one sms (red box is where second sms should be with own informations like number...)..
Here is code where I receive events.
export default function setupStream(){
let evtSource = new EventSource('/hzs/events.sse');
evtSource.addEventListener('receive_sms', event => {
let sms_data = JSON.parse(event.data);
store.dispatch('receiveSMS', sms_data);
}, false)
}
Here is my vuex code
const state = {
sms: [],
};
const getters = {
getSMS: (state) => state.sms,
};
const actions = {
receiveSMS({ commit }, sms_data) {
commit('setSMS', sms_data);
},
};
const mutations = {
setSMS: (state, sms) => (state.sms = sms),
};
export default {
state,
getters,
actions,
mutations
}
And here is component.
<template>
<v-card>
<v-card-title class="primary white--text">
{{ $t("Communication") }}
</v-card-title>
<v-card d-flex flex-column height="100%" class="card-outter scroll">
<v-col>
<div v-for="sms in getSMS" :key="sms.id">
<v-card-actions>
<v-row>
<v-btn #click="openChat" icon class="mt-4"
><v-img
max-width="30px"
max-height="30px"
class="mt-2"
src="#/assets/icons/icon-sms.svg"
alt="icon-sms"
/></v-btn>
<v-col>
<span>{{sms.date_time}}</span> <br />
<h4>{{sms.sender}}</h4>
<!-- Dialog for Adding new Note -->
<v-dialog
v-model="showEditor"
max-width="400px"
persistent
scrollable
>
<template v-slot:activator="{ on, attrs }">
<v-btn
#click="showEditor = true"
depressed
small
v-bind="attrs"
v-on="on"
>{{$t("Add Note")}}</v-btn
>
</template>
<AddNoteDialog v-on:close-card="showEditor = false"
/></v-dialog>
</v-col>
<v-spacer></v-spacer>
<v-btn class="mt-5" icon #click="deleteCommunication"
><v-img
max-width="20px"
src="#/assets/icons/icon-delete.svg"
alt="icon-delete"
/></v-btn>
</v-row>
</v-card-actions>
<v-divider></v-divider>
</div>
<v-spacer></v-spacer>
<v-divider></v-divider>
<v-card-actions class="card-actions">
<v-row>
<v-text-field
class="ml-4"
color="primary white--text"
required
:label="$t('Mobile number')"
clearable
></v-text-field>
<v-dialog
v-model="showEditor1"
max-width="450px"
persistent
scrollable
>
<template v-slot:activator="{ on, attrs }">
<v-btn
#click="showEditor1 = true"
class="mt-5 mr-4"
depressed
icon
v-bind="attrs"
v-on="on"
><v-icon>mdi-plus-circle</v-icon></v-btn
>
</template>
<AddNummberDialog v-on:close-card="showEditor1 = false"
/></v-dialog>
</v-row>
</v-card-actions>
</v-col>
</v-card>
</v-card>
</template>
<script>
import AddNoteDialog from "#/components/UI/AddNoteDialog";
import AddNummberDialog from "#/components/UI/AddNummberDialog";
import { mapGetters, mapActions } from 'vuex';
export default {
name: "Communication",
data() {
return {
dialog: false,
showEditor: false,
showEditor1: false,
note: '',
chat: this.switchChat,
};
},
computed: {
...mapGetters(['getSMS']),
},
components: { AddNoteDialog, AddNummberDialog },
props: ["switchChat"],
methods: {
...mapActions(['setupEvents']),
openChat() {
this.$emit('openChat')
},
async deleteCommunication() {
alert("Deleted");
},
},
};
</script>
<style>
.scroll {
overflow-y: scroll;
}
.card-outter {
padding-bottom: 50px;
}
.card-actions {
position: absolute;
bottom: 0;
width: 100%;
}
</style>
I think that solution is creating new array, where I will store every single SMS that I receive. Problem is that I don't know how and where to do it.
You already have your vue state array called sms which is a good start. You'll need to update your Vuex to have an additional mutation called "addNewSMS" or something:
const mutations = {
setSMS: (state, sms) => (state.sms = sms),
addNewSMS: (state, newSMS) => state.sms.push(newSMS),
};
This will update your state.sms array to include more than one element, which you should be able to loop through using a v-for loop in your template.
Of course, you'll also need to update your actions like this:
const actions = {
receiveSMS({ commit }, sms_data) {
commit('addNewSMS', sms_data);
},
};
As a sidenote, I'd personally change the sms variable name to messages so its clearer to you and other coders that it contains multiple objects.

How to filter with a regex what's the user is typing in a Vuetify combobox to create a chip?

I am trying to allow only a certain regex pattern when the user is typing in a comboox to create or add a new chip (basically for example if you want the user to only be able to add phone number chips).
Full Vue Source code: https://codesandbox.io/s/chips-so-0gp7g?file=/src/domains/experimental/Experimental.vue
Preview: https://0gp7g.csb.app/experimental
Relevant piece of Vue Source Code:
<template>
<v-container>
<v-row>
<v-col>
<v-combobox
v-model="chips"
chips
:delimiters="[',']"
append-icon=""
clearable
hint="Hey I'm a 🥔 hint!"
persistent-hint
label="Type your favorite 🥔s"
multiple
solo
#input="meowInput"
#change="meowInput"
>
<template v-slot:selection="{ attrs, item }">
<v-chip
v-bind="attrs"
close
:color="getColor(item)"
#click:close="remove(item)"
>
<strong>🥔{{ item }}</strong
>
</v-chip>
</template>
</v-combobox>
</v-col>
</v-row>
</v-container>
</template>
<script>
import ColorHash from "color-hash";
export default {
name: "Experimental",
components: {},
data() {
return {
select: [],
chips: [],
search: "", //sync search
};
},
methods: {
meowInput(e) {
console.log(e);
},
getColor(item) {
const colorHash = new ColorHash({ lightness: 0.9 });
return colorHash.hex(item);
},
remove(item) {
this.chips.splice(this.chips.indexOf(item), 1);
this.chips = [...this.chips];
},
},
};
</script>
How can I achieve that behaviour?
The only way I can see this working is to evaluate the input against a regex (I used US numbers here, but you can use whatever you need) and, if it does not pass the regex test, pop the value out of the chips array.
You can see what I did below. Hopefully this gives you something to go off of:
<template>
<v-container>
<v-row>
<v-col>
<v-combobox
v-model="chips"
chips
:delimiters="[',']"
append-icon=""
clearable
hint="Hey I'm a 🥔 hint!"
persistent-hint
label="Type your favorite 🥔s"
multiple
solo
#change="meowInput" // I changed this to #change so it executes when the user hits enter
>
<template v-slot:selection="{ attrs, item }">
<v-chip
v-bind="attrs"
close
mask="###"
:color="getColor(item)"
#click:close="remove(item)"
>
<strong>🥔{{ item }}</strong
>
</v-chip>
</template>
</v-combobox>
</v-col>
</v-row>
</v-container>
</template>
<script>
import ColorHash from "color-hash";
export default {
name: "Experimental",
components: {},
data() {
return {
select: [],
chips: [],
search: "", //sync search
};
},
methods: {
meowInput(e) {
// Test if the input string matches the specified regex pattern
if (!/^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$/.test(e)) {
console.log("invalid!");
// Remove from the chips array
console.log(this.chips);
this.chips.pop();
} else {
console.log("phone number");
// Automatically added to the chips array
}
},
getColor(item) {
const colorHash = new ColorHash({ lightness: 0.9 });
return colorHash.hex(item);
},
remove(item) {
this.chips.splice(this.chips.indexOf(item), 1);
this.chips = [...this.chips];
},
},
};
</script>

Two way data binding in Vue: Unable to update the Parent component from the child component

I got the following two components:
Parent:
<template>
<v-container>
<v-row class="text-center">
<v-col cols="12" class="parent">
<p>Ich bin der Parent component</p>
<button #click="changeDetail" :name.sync="name">Change Details</button>
<Child v-bind:name="name"></Child>
</v-col>
</v-row>
</v-container>
</template>
<script>
import Child from "./Child";
export default {
name: "Parent",
data: () => ({
name: "test"
}),
methods: {
changeDetail() {
this.name = "Updated from Parent";
}
},
components: {
Child
}
};
</script>
Child:
<template>
<v-container>
<v-row class="text-center">
<v-col cols="12">
<p>My name is: {{ name}}</p>
<button #click="resetname">Reset the name</button>
</v-col>
</v-row>
</v-container>
</template>
<script>
export default {
// props: ["name"],
props: {
name: {
type: String,
required: true
}
},
data: () => ({
newname: "Updated from Child"
}),
methods: {
resetname() {
this.$emit("update:name", this.newname);
}
}
};
</script>
As far as I read here: https://v2.vuejs.org/v2/guide/components-custom-events.html#sync-Modifier, I should use update and sync to pass props from the child back to the parent. However it does not work. I don´t understand what´s wrong here. What am I missing?
It is usually best to not bind your template to the prop but a computed property instead to ensure the data is accessed and modified externally. It will also simplify your code a bit so that you don't have to trigger updates.
Parent:
<template>
<v-container>
<v-row class="text-center">
<v-col cols="12" class="parent">
<p>Ich bin der Parent component</p>
<button #click="changeDetail">Change Details</button>
<Child v-bind:name.sync="name"></Child>
</v-col>
</v-row>
</v-container>
</template>
<script>
import Child from "./Child";
export default {
name: "Parent",
data: () => ({
name: "test"
}),
methods: {
changeDetail() {
this.name = "Updated from Parent";
}
},
components: {
Child
}
};
</script>
Child:
<template>
<v-container>
<v-row class="text-center">
<v-col cols="12">
<p>My name is: {{ currentName }}</p>
<button #click="resetname">Reset the name</button>
</v-col>
</v-row>
</v-container>
</template>
<script>
export default {
// props: ["name"],
props: {
name: {
type: String,
required: true
}
},
data: () => ({
//Be careful with fat arrow functions for data
//Because the value of *this* isn't the component,
//but rather the parent scope.
}),
computed: {
currentName: {
get() { return this.name },
set(value) { this.$emit("update:name", value); }
}
},
methods: {
resetname() {
this.currentName = "updated from child";
}
}
};
</script>

Add new properties to an object used in v-for

I want to add data (from two v-text-fields) in my product component to my data that I pass to the server. So that if the user adds the values '444' and '230' to the v-text-fields, the entry would be:
{
"444": 230
}
So far, I have hard coded the '444' and managed to get the value '230' passed. But how do i pass both '444' and '230' according to user inputs from a v-text-field?
product.vue
<v-content>
<v-container>
<code>formData:</code> {{ formData }}<br />
<v-btn color="primary" #click="create">Save</v-btn>
(Check console)<br />
<v-row>
<v-col>
<v-text-field v-for="(value, key) in formData" :key="key"
label="Card Type" v-model="formData[key]"
></v-text-field>
</v-col>
</v-row>
</v-container>
</v-content>
data() {
return {
dialog: false,
product: null,
error: null,
formData: {
444: null,
}
}
},
methods: {
async create() {
try {
await ProductService.create(this.formData);
} catch (error) {
this.error = error.response.data.message
}
}
}
What changes would i need to make in my component so that formData is based on user input from another v-text-field?
I remember your previous question. To add a new item to that basic formData hash, you would do something like this:
<div>
<v-text-field label="Product #" v-model="newKey"></v-text-field>
<v-text-field label="Card Type" v-model="newValue"></v-text-field>
<v-btn #click="$set(formData, newKey, newValue)">+</v-btn>
</div>
This uses $set to add new properties to formData.

Categories

Resources