Develop Reference

Filtering popup menu

In general, I need to make a pop-up menu with a choice of a category, everything works for me, but there is one point that needs to be improved.
When the category has already been selected, it is necessary that in the blog-filter class, All should be changed to the selected category, I tried many options, but all the non-working ones turned out to be.
html
<div class="blog-filter">
<div class="blog-filter_item active js-filter-blog-list" data-filter="all">All</div>
</div>
<div class="blog-filter-container">
<div class="container">
<h1 class="blog-filter-title">Choose Category</h1>
<div class="item-wrapper">
<div class="blog-filter_item active" data-filter="all">All</div>
#foreach($categories as $category)
<div class="blog-filter_item" data-filter=".category_{{$category->id}}">{{ $category->title }} ({{ $category->articles_count }})</div>
#endforeach
</div>
</div>
</div>
#foreach ($articles as $article)
<div class="blog-list category_{{ $article->blog_category_id }}">
<div class="article article--left" >
<h2 class="article_title">{{ $article->title }}</h2>
</div>
<div class="article article--right">
<h2 class="article_title">{{ $article->title }}</h2>
</div>
</div>
#endforeach
js
$('.js-filter-blog-list').on('click', event => {
const modalFilter = document.querySelector('.blog-filter-container');
$(modalFilter).toggleClass('open');
});
document.querySelectorAll('.blog-filter_item').forEach(el => {
el.addEventListener('click', () => {
document
.querySelector('.blog-filter_item.active')
.classList.remove('active');
el.classList.add('active');
var dataFilter = $(el).attr('data-filter');
if (dataFilter == 'all') {
$('.blog-list').show();
}
else {
$('.blog-list').hide();
$(dataFilter).show();
}
});
});

Solution:
#foreach($categories as $category)
<div class="blog-filter_item" data-filter=".category_{{$category->id}}" value="{{ $category->title }} ({{ $category->articles_count }})>{{ $category->title }} ({{ $category->articles_count }})</div>
#endforeach
var dataFilter = $(el).attr('data-filter');
var value = $(el).attr('value');
if (dataFilter == 'all') {
$('.blog-list').show();
$('.js-filter-blog-list').text('All');
}
else {
$('.blog-list').hide();
$(dataFilter).show();
$('.js-filter-blog-list').text(value);
}

How to create new bootstrap row per two items on Angular?

I'd like to add row on each 2 elements of ngFor loop.But I couldnt handle it.
I have studentNames array like below
studentNames=[
{
name:"Jonas",
age:22,
number:"1234"
},
{
name:"Mathilda",
age:25,
number:"5432"
},
{
name:"Jacob",
age:20,
number:"4321"
},
{
name:"Ivan",
age:23,
number:"6984"
},
{
name:"Kate",
age:21,
number:"3432"
},
{
name:"James",
age:20,
number:"4312"
},
{
name:"Sean",
age:23,
number:"4321"
},
{
name:"Julia",
age:23,
number:"4321"
},
]
Here what I tried
<ng-container *ngFor="let item of studentNames;let i=index">
<div class="row" *ngIf="i%2==0">
<div class="col md-12">
{{item.name}}
</div>
</div>
</ng-container>
This only skipped when index is not even.
Here how I want to see them below(order doesnt matter only should be 2 by 2 per row).
Stackblitz example: https://stackblitz.com/edit/bootstrap-wpfukz?file=app%2Fapp.component.html

This is a bit more "hacky" approach but it's HTML-only:
<ng-container *ngFor="let item of studentNames;let i=index">
<div *ngIf="i%2==0">
<div class="row">
<div class="col md-12">
{{studentNames[i].name}}
</div>
<div class="col md-12">
{{studentNames[i + 1].name}}
</div>
</div>
</div>
</ng-container>

You can try like below. Use *ngFor exported value index and use half length of the array to continue the loop
<ng-container *ngFor="let item of studentNames; let j = index;">
<ng-container *ngIf="j < (studentNames.length / 2)">
<div class="row">
<div class="col md-6">
{{item.name}}
</div>
<div class="col md-6">
{{ studentNames[ j + (studentNames.length / 2) ].name }}
</div>
</div>
</ng-container>
</ng-container>
Working stackblitz
Note : Array length should be an even number ;)

ERROR Error: Cannot find control with name: '[object Object]

I'm working with Reactive Forms and I'm trying to pass my form down to child components, but I'm running into the error above. Initially at the top level of the form I was using a FormArray to hold my form and that was working fine before I tried passing it down to the child components. Thanks to this post I now know that the top level of a form should be a FormGroup and the FormArray should be a child of the FormGroup.
So now I am nesting my FormArray inside of a FormGroup and I'm getting the error above. I'm not sure what I'm doing wrong? Below in the relevant code.
// Parent component.ts
ngOnInit() {
if (!!this.rows) {
this.tableForm = new FormArray([]);
this.rows.forEach((row) => {
this.rowGroup = new FormGroup({})
this.columns.forEach(column => {
this.rowGroup.addControl(column.key, new FormControl(row[column.key]));
});
this.tableForm.push(this.rowGroup);
})
this.tableGroup = new FormGroup({
rows: new FormControl(this.tableForm)
})
}
}
// Parent HTML
<section
*ngIf="!!modal"
class="modal__mask">
<section
class="modal__container"
#carousel
[ngStyle]="{'left': start + 'px'}"
(window:resize)="onResize($event)"
[formGroup]="tableGroup">
<div
*ngFor='let row of selectedRows; let i = index'
class="modal modal__large"
[formArrayName]="rows">
<div
[formGroupName]="i"
[ngClass]="{'opacity': modalPage !== i}">
<div class="modal__header modal__header--large">
<h6>Edit Employee Details</h6>
</div>
<div class="u-flex u-wrap">
<div
class="u-flex modal__body"
style="width: 50%"
*ngFor="let column of columns">
<div
*ngIf="column.label"
class="input__wrapper"
[ngClass]="{'input__wrapper--inline': layout === 'horizontal'}">
<z-input
*ngIf="column.label"
class="u-maxX"
[group]="tableGroup"
[config]="column">
</z-input>
<!-- <div>
<label
class="input__label">
<p class="t-bold t-data">{{column.label}}</p>
</label>
<div class="z-input__default">
<input
class="input u-maxX"
[formControlName]="column.key"
[value]="row[column.key]">
</div>
</div> -->
</div>
</div>
<section class="modal__footer u-fillRemaining">
<div class="u-flex">
<button
class="button button--medium"
(click)="nextSelectedRow()">
<div class="button__content">
<i
class="icon icon--medium"
*ngIf="!!icon">
{{icon}}
</i>
<span>Skip</span>
</div>
</button>
</div>
<div class="u-flex">
<button
class="button button--low"
(click)="reset(row, i)">
<div class="button__content">
<i
class="icon icon--medium"
*ngIf="!!icon">
{{icon}}
</i>
<span>Reset</span>
</div>
</button>
<button
class="button button--low"
(click)="saveChanges(row, i)">
<div class="button__content">
<i
class="icon icon--medium"
*ngIf="!!icon">
{{icon}}
</i>
<span>Save Changes</span>
</div>
</button>
</div>
</section>
</div>
</div>
</div>
// Child component.ts
#Input() config;
#Input() group: FormGroup;
#Input() view: string;
#Input() layout: string;
// Child HTML
<div
class="input__wrapper"
[ngClass]="{'input__wrapper--inline': layout === 'horizontal'}"
[formGroup]="group"
[ngSwitch]="config.type">
<label
class="input__label"
*ngIf="!!config.label">
<p class="t-bold t-data">{{config.label}}</p>
</label>
<z-select
*ngSwitchCase="'select'"
[config]="config"
[group]="group"
[view]="view"
gridColumn="1 / 5">
</z-select>
<div class="z-input__default">
<input
*ngSwitchDefault
class="input u-maxX"
[formControlName]="config.key"
[attr.type]="config.type"
[attr.placeholder]="config.placeholder">
</div>

How to read data from a v-for (vue.js)?

Given the next v-for:
<div class="container-fluid" id="networdapp" style="display:none;">
<div class="row" >
<div v-for="result in results" class="col-sm-6" >
<div class="card m-3 h-240 bg-light" >
<div class="card-header text-center" > {{ result.title }} </div>
<div class="card-body" style="height:200px" >
<p class="card-text" v-html="result.prevDesc"></p>
</div>
<div class="card-footer bg-transparent border-info">
<a href="/details" class="btn btn-info" #click="getData(result)" >Details</a>
</div>
</div>
</div>
</div>
</div>
And the next Vue.js script:
<script type="text/javascript">
const vm = new Vue({
el: '#networdapp',
data: {
results:[]
},
methods: {
getData: function(result){
window.alert($(this).parents("#networdapp").find(".card-header.text-center").outerHTML);
window.alert(document.getElementsByClassName("card-header").outerHTML);
window.alert(result.outerHTML);
}
},
mounted() {
axios.get('/getJson')
.then(response => {
this.results = response.data;
})
.catch( e => {
console.log(e);
});
}
});
</script>
I want to get data from a specific iteration,let's say if I click the "Details" button of the 3rd div from the v-for I want to get the {{result.title }} data from the 3rd for.Is it possible?I've been reading the Vue.js documentation but I didn't find anything about reading the data from DOM.If it is not possible,than how can I do that without Vue.js?Is there any other option?
The main goal is to get this data and to put it into a js object passing it to another webpage.

you have to pass index key and use is to get from results's position.
change the for loop div into
<div v-for="(result,i) in results" :key="i" class="col-sm-6" >
also chnange the methods parameter
<a href="/details" class="btn btn-info" #click="getData(i)" >Details</a>
and the method will get the index key and here i have used console to see the result.title that you have wanted. you can use it any how you want.
getData: function(key){
console.log(this.results[key].title)
}
so
Given the next v-for:
<div class="container-fluid" id="networdapp" style="display:none;">
<div class="row" >
<div v-for="(result,i) in results" :key="i" class="col-sm-6" >
<div class="card m-3 h-240 bg-light" >
<div class="card-header text-center" > {{ result.title }} </div>
<div class="card-body" style="height:200px" >
<p class="card-text" v-html="result.prevDesc"></p>
</div>
<div class="card-footer bg-transparent border-info">
<a href="/details" class="btn btn-info" #click="getData(i)" >Details</a>
</div>
</div>
</div>
</div>
And the next Vue.js script:
<script type="text/javascript">
const vm = new Vue({
el: '#networdapp',
data: {
results:[]
},
methods: {
getData: function(key){
console.log(this.results[key].title)
}
},
mounted() {
axios.get('/getJson')
.then(response => {
this.results = response.data;
})
.catch( e => {
console.log(e);
});
}
});

To get the data you want to access in the results array, you can use an index in your v-for loop
v-for="(result, index) in results"
you can check the docs here https://v2.vuejs.org/v2/guide/list.html
I also strongly recommend you to add a key attribute after the v-for to help vue.js
keep track of each result, see https://v2.vuejs.org/v2/guide/list.html#key

jQuery function in an AngularJS way

I'm moving some code from jQuery to AngularJS, but I am still having trouble understanding its logic, so switching to AngularJS caused confusion. I have the following example which I did in AngularJS:
<div class="main" ng-repeat="data in mainData">
<div class="row forecast_daily">
<div class="col-md-4 col-md-offset-2">
{{ data.date.weekday }}
{{ data.date.day }}
{{ data.edit }}
</div>
<div class="col-md-3 range-index">
<div class="range">
<span class="min">{{ data.low }}</span>
<span class="max">{{ data.high }}</span>
</div>
</div>
</div>
</div>
But I have this jQuery function which I'm having trouble doing in an AngularJS way.
$('.range-index').each(function(){
var min = parseInt($(this).find('.min').html()),
max = parseInt($(this).find('.max').html());
var l = max - (max-min);
var w = (max-min)*20;
$(this).find('.range').css({left:l+"%",width: w});
});

It looks like ng-style can work well here:
<div class="col-md-3 range-index">
<div class="range"
ng-style="{left: data.low + '%', width: (data.high - data.low) * 20 + 'px'}">
<span class="min">{{ data.low }}</span>
<span class="max">{{ data.high }}</span>
</div>
</div>
Or better. You can create a helper function in the controller:
$scope.getStyle = function(data) {
return {
left: data.low + '%',
width: (data.high - data.low) * 20 + 'px'
};
};
And use it like this:
<div class="col-md-3 range-index">
<div class="range" ng-style="getStyle(data)">
<span class="min">{{ data.low }}</span>
<span class="max">{{ data.high }}</span>
</div>
</div>