Hi i'm trying to get the information of printers by the location. so if i have few printers at the same location ill see them both at the dropdown but i actually want to see only one location on the dropdown if they are the same location.
i know i can solve this in the database level and add relationships but maybe there is a way to do it without it ?
import {
Component,
OnInit
} from '#angular/core';
import {
HttpClient
} from '#angular/common/http';
import {
DomSanitizer
} from '#angular/platform-browser';
import {
Values
} from '../Models/Values';
#Component({
selector: 'app-value',
templateUrl: './value.component.html',
styleUrls: ['./value.component.css']
})
export class ValueComponent implements OnInit {
selectedPrinter: Values;
values: any;
constructor(private http: HttpClient, public sanitizer: DomSanitizer) {}
ngOnInit() {
this.getValues();
}
getValues() {
this.http.get('http://localhost:5000/api/values/').subscribe(response => {
this.values = response;
}, error => {
console.log(error);
})
}
}
<H2>Printer Manager</H2>
<div id="selectCompanyDiv">
<div class="col-12 col-md-3 col-xl-2 mt-5 bd-sidebar">
<label for="">Select Location</label>
<select class="form-control" [(ngModel)]="selectedPrinter">
<option *ngFor="let each of values " [ngValue]="each.location">{{each.location}} </option>
<!-- {{each.specificLocation}} -->
</select>
<!-- Search -->
<!-- <input id="test" *ngFor="let each of values " class="form-control" type="search" placeholder="Search" {{values.location}}>
<button ondblclick="Access()">click here
</button> -->
</div>
<br>
<br>
<div>
<div *ngFor="let value of values" id="mainDiv">
<div *ngIf="value.location===selectedPrinter">
<span>HostName: {{value.hostName}}</span>
<br>
<!-- <span>Location: {{value.location}}</span> -->
<span>Manufacturer: {{value.manufacturer}}</span>
<br>
<span>IP: {{value.ip}}</span>
<br>
<h2>{{value.location}}</h2>
<span>{{value.specificLocation}}</span>
<br>
<a target="_blank" [href]="sanitizer.bypassSecurityTrustResourceUrl('http://'+value.ip+'/general/status.html')">Full view</a>
<div>
<div *ngIf="value.model==='J480'" class="outerFrame">
<iframe [src]="sanitizer.bypassSecurityTrustResourceUrl('http://'+value.ip+'/general/status.html')" id="inneriframeBrotherj480" scrolling="no"></iframe>
</div>
<div *ngIf="value.model==='6530DW'" class="outerFrame">
<iframe [src]="sanitizer.bypassSecurityTrustResourceUrl('http://'+value.ip+'/general/status.html')" id="inneriframeBrother6530DW" scrolling="no"></iframe>
</div>
</div>
</div>
</div>
getValues() {
this.http.get('http://localhost:5000/api/values/').subscribe(response => {
this.values = [...new Set(response)];
}, error => {
console.log(error);
})
}
What i would do is the following:
In getValues():
getValues() {
this.http.get('http://localhost:5000/api/values/').subscribe(response => {
this.values = Array.from(new Set(response));
}, error => {
console.log(error);
})
}
Take a look at Array.from documentation and Array.from(set)
Good luck!
Related
Component.html
<div class="bootstrap-wrapper" *ngIf="!isSubmit">
<div class="container-fluid">
<div class="row">
<div class="col-md-2">
<!-- instructions -->
<h2>Instructions</h2>
</div>
<div class="col-md-8">
<!-- questions -->
<ng-container *ngIf="questions">
<h2>{{questions[0].quiz.title}}</h2>
</ng-container>
<mat-card *ngFor="let q of questions, let i= index" class="mt20">
<mat-card-content>
<p> Q {{i+1}}) <span [innerHTML]="q.content"></span> </p>
<mat-divider></mat-divider>
<div class="row mt20" >
<div class="col-md-6">
<input type="radio" [value]="q.option1"
[name]="i"
// this is where i am getting error
[(ngModel)] ="q.givenAnswer"
/>
{{q.option1}}
{{i}}
</div>
<div class="col-md-6">
<input type="radio" [value]="q.option2"
[name]="i"
// this is where i am getting error
[(ngModel)] ="q.givenAnswer"
/>
{{q.option2}}
{{i}}
</div>
</div>
<div class="row mt20">
<div class="col-md-6">
<input type="radio" [value]="q.option3"
// this is where i am getting error
[name]="i"
[(ngModel)] ="q.givenAnswer"
/>
{{q.option3}}
{{i}}
</div>
<div class="col-md-6">
<input
type="radio"
[value]="q.option4"
// this is where i am getting error
[name]="i"
[(ngModel)] ="q.givenAnswer"
/>
{{q.option4}}
{{i}}
</div>
</div>
</mat-card-content>
</mat-card>
<div class="container text-center mt20">
<button (click)="submitQuiz()" mat-raised-button color="accent">Submit
Quiz</button>
</div>
</div>
<div class="col-md-2">
</div>
</div>
</div>
</div>
<!-- Show Result -->
<div class="bootstrap-wrapper" *ngIf="isSubmit">
<div class="row">
<div class="col-md-6 offset-md-3">
<mat-card>
<mat-card-header>
<mat-card-title>
<h1 class="text-center mall">Quiz Result</h1>
</mat-card-title>
</mat-card-header>
<mat-card-content>
<h1>Marks Obtained: {{marksGot}}</h1>
<h1>Correct Ansers: {{correctAnswers}}</h1>
<h1>Questions Attempted: {{attempted}}</h1>
</mat-card-content>
<mat-card-actions>
<button mat-raised-button color="accent">Print</button>
<button mat-raised-button color="accent" [routerLink]="'/user-
dashboard/0'">Home</button>
</mat-card-actions>
</mat-card>
</div>
</div>
</div>
Component.ts
import { LocationStrategy } from '#angular/common';
import { Component, OnInit } from '#angular/core';
import { ActivatedRoute } from '#angular/router';
import { QuestionService } from 'src/app/services/question.service';
import Swal from 'sweetalert2';
#Component({
selector: 'app-start-quiz',
templateUrl: './start-quiz.component.html',
styleUrls: ['./start-quiz.component.css']
})
export class StartQuizComponent implements OnInit {
qid;
questions;
marksGot = 0;
correctAnswers = 0;
attempted = 0;
isSubmit = false;
constructor(private locationSt: LocationStrategy, private _route: ActivatedRoute, private
_question: QuestionService) { }
ngOnInit(): void {
this.preventBackButton();
this.qid = this._route.snapshot.params['qid'];
this.loadQuestions();
}
loadQuestions() {
this._question.getQuestionsOfQuizForTest(this.qid).subscribe(
(data: any) => {
this.questions = data;
this.questions.forEach((q) => {
q['givenAnswer'] = '';
});
console.log(data);
},
(error) => {
Swal.fire('Error', 'Error in loading questions of quiz', 'error');
}
);
}
preventBackButton() {
history.pushState(null, null, location.href);
this.locationSt.onPopState(() => {
history.pushState(null, null, location.href);
})
}
submitQuiz() {
Swal.fire({
title: 'Do you want to Submit quiz?',
showCancelButton: true,
confirmButtonText: 'Submit Quiz',
icon: 'info',
}).then((e) => {
if (e.isConfirmed) {
//calculation
this.isSubmit=true;
this.questions.forEach((q) => {
if (q.givenAnswer == q.answer) {
this.correctAnswers++;
let marksSingle = this.questions[0].quiz.maxMarks / this.questions.length;
this.marksGot += marksSingle;
}
if (q.givenAnswer.trim() != '') {
this.attempted++;
}
});
console.log("Correct Answers " + this.correctAnswers);
}
})
}
}
enter image description here
When i am name as [name] it is showing number is not assignable to type String and when i am using name it is compiling successfully but i have three questions in a quiz and while selecting an option of a particular question other options of other questions are getting deselected. what to do?
Thanks in Advance
[(ngModel)]="q.givenAnswer" type="radio" [value]="q.option1" name={{i}}
In Angular i have dynamically created a group of buttons that all have the same action (to show text when clicked) everything works fine yet when I click one button they all perform the action. I need them to work independently of each other. I have dynamically made a different id for each button and was wondering if there was a way to us the id to have them work independently.
Button HTML and TS files:
<button id="{{index}}" class="btn btn-secondary" style="float: right;" (click)="onClick()">Discription</button>
import { Component, EventEmitter, OnInit, Output, Input } from '#angular/core';
#Component({
selector: 'app-discription-btn',
templateUrl: './discription-btn.component.html',
styleUrls: ['./discription-btn.component.css']
})
export class DiscriptionBtnComponent implements OnInit {
#Output() btnClick = new EventEmitter();
#Input() index!: number
constructor() { }
ngOnInit(): void { }
onClick() {
this.btnClick.emit();
}
}
Button Parent HTML and TS files:
<div class="card mb-4 h-100">
<img class="card-img-top-other" src= "{{ post.link }}" />
<div class="card-body">
<div class="small text-muted"> {{ post.created }} <app-discription-btn (btnClick) = "toggleDiscription()" [index] = index></app-discription-btn> </div>
<h2 class="card-title h4"> {{ post.title }} </h2>
<div *ngIf="showDiscription">
<p class="card-text"> {{ post.summary }} </p>
<a class="btn btn-primary" href="#!">Read More -></a>
</div>
</div>
</div>
import { Component, OnInit, Input } from '#angular/core';
import { Subscription } from 'rxjs';
import { BlogPost } from 'src/app/Post';
import { DiscriptionUiService } from 'src/app/services/discription-ui.service';
#Component({
selector: 'app-other-posts',
templateUrl: './other-posts.component.html',
styleUrls: ['./other-posts.component.css']
})
export class OtherPostsComponent implements OnInit {
#Input() post! : BlogPost
#Input() index! : number;
showDiscription : boolean = false;
subscription : Subscription;
constructor(private discritpionService: DiscriptionUiService) {
this.subscription = this.discritpionService.onToggle().subscribe((value) => (this.showDiscription = value));
}
ngOnInit(): void {
}
toggleDiscription(){
this.discritpionService.toggleDiscription();
}
}
Main HTML and TS files:
<div class="container">
<div class="row">
<div class="col-lg-8"><app-featured-post *ngFor="let post of posts; let i = index;" [post] = "post" [index] = "i"></app-featured-post></div>
<div class="col-lg-4"><app-side-widgets></app-side-widgets></div>
<app-other-posts *ngFor="let post of posts | myFilterPipe:filterargs; let i = index;" [post] = "post" [index] = "i" class="col-lg-4" style="padding-top: 10px;" ></app-other-posts>
<nav aria-label="Pagination">
<hr class="my-0" />
<ul class="pagination justify-content-center my-4">
<li class="page-item disabled"><a class="page-link" href="#" tabindex="-1" aria-disabled="true">Newer</a></li>
<li class="page-item active" aria-current="page"><a class="page-link" href="#!">1</a></li>
<li class="page-item"><a class="page-link" href="#!">Older</a></li>
</ul>
</nav>
</div>
</div>
import { Component, OnInit } from '#angular/core';
import { BlogPostService } from 'src/app/services/blog-post.service';
import { BlogPost } from '../../Post';
#Component({
selector: 'app-posts',
templateUrl: './posts.component.html',
styleUrls: ['./posts.component.css']
})
export class PostsComponent implements OnInit {
filterargs = {title: 'The Beginning'}
posts: BlogPost[] = [];
constructor(private postService: BlogPostService ) { }
ngOnInit(): void {
this.postService.getPosts().subscribe((posts) => (this.posts = posts));
}
}
Any ideas would be a great help. Thank you ahead of time!
I cannot make this eventemitter work. Can you please help? I am a beginner and it should be quite simple code for you.
I have a parent component, reading two different emitters from two different children:
<app-van [vans]="vans"></app-van>
<app-modal *ngIf="modalOpen" (closed)="onClick()" (openModal)="onClickTwo($event)"></app-modal>
import { Component, OnInit } from '#angular/core';
import { Van } from '../../interface';
#Component({
selector: 'app-fleet-home',
templateUrl: './fleet-home.component.html',
styleUrls: ['./fleet-home.component.css']
})
export class FleetHomeComponent implements OnInit {
modalOpen = true;
vans: Van [] = [
{ name: 'Ubeddu', description: 'Mercedes Sprinter', plate: 'NH55GKA' },
{ name: 'Abbestia', description: 'Ford Transit', plate: 'DK66HHR' },
{ name: 'Eumulu', description: 'Citroen Berlingo', plate: 'DR55MKL' }
];
constructor( ) { }
ngOnInit() {
}
onClick() {
this.modalOpen = !this.modalOpen;
console.log('modalOpen changed');
}
onClickTwo(event) {
this.modalOpen = event;
console.log('modalOpen changed');
}
}
the parent listened to this child:
<div (click)="onCloseClick()" class="ui dimmer visible active">
<div (click)="$event.stopPropagation()" class="ui modal visible active">
<div class="asuca">
<form class="ui form" >
<h4 class="ui dividing huge header">Van</h4>
<div class="required field">
<label class="ui header">Van Name</label>
<input type="text" placeholder="Van NickName">
</div>
<div class="field">
<label class="ui header">Description</label>
<input type="text"placeholder="Description">
</div>
<div class="field">
<label class="ui header">Plate</label>
<input type="text"placeholder="License Plate">
</div>
<button (click)="onCloseClick()" class="ui button" type="submit">Submit</button>
</form>
</div>
</div>
</div>
import { Component, OnInit, ElementRef, Output, EventEmitter } from '#angular/core';
#Component({
selector: 'app-modal',
templateUrl: './modal.component.html',
styleUrls: ['./modal.component.css']
})
export class ModalComponent implements OnInit {
#Output() closed = new EventEmitter();
constructor(private el: ElementRef) { }
ngOnInit() {
document.body.appendChild(this.el.nativeElement);
}
// tslint:disable-next-line: use-lifecycle-interface
ngOnDestroy() {
this.el.nativeElement.remove();
}
onCloseClick() {
this.closed.emit();
}
}
and doesnt listen to the second child:
<div class="ui fluid four black cards">
<div *ngFor="let van of vans" class="card">
<div class="content">
<div class="header">
{{ van.name }}
</div>
<div class="meta">
{{ van.description }}
</div>
<div class="description">
{{ van.plate }}
</div>
</div>
<div class="extra content">
<div class="ui two buttons">
<div (click)="onEditClick(true)" class="ui basic black button">Edit</div>
<div class="ui basic red button">Delete</div>
</div>
</div>
</div>
</div>
import { Component, OnInit, Input, Output, EventEmitter } from '#angular/core';
#Component({
selector: 'app-van',
templateUrl: './van.component.html',
styleUrls: ['./van.component.css']
})
export class VanComponent implements OnInit {
#Input() vans = [];
#Output() openModal = new EventEmitter<boolean>();
constructor() { }
ngOnInit() {
}
onEditClick(event: boolean) {
this.openModal.emit(event);
}
}
the whole thing is to hide the modal clicking around the screen and show it again clicking a button.
On the console.log, the object emitter by the first child has got an observer, where the object emitter by the second child as none; no idea what means though.
thanks in advance for the help. I can provide the whole folder if needed. I am just trying to learn :)
Seems like you have missed binding the output event in parent template. Please correct like below:
<app-van [vans]="vans" (openModal)="onEditClick($event)"></app-van>
i want to know how to fetch the dom element from a components template :
Component
export class JokeListComponent implements OnInit, AfterViewInit {
jokes: Joke[];
constructor() { }
#ViewChild('.myclass') el: ElementRef;
ngOnInit() {
this.jokes = [
new Joke('joke1', 'content1'),
new Joke('Joke2', 'content2'),
new Joke(),
];
}
ngAfterViewInit(): void {
console.log(this.el);
}
}
View
<div class="card">
<div class="card-block">
<h4 class="card-title"> New Joke Form </h4>
<div class="myclass">
</div>
<div class="form-group">
<label for="jokeHeader">Joke Header</label>
<input type="text" id="jokeHeader" class="form-control" placeholder="Joke Head" #jokeHead>
</div>
<div class="form-group">
<label for="jokeContent">Joke Header</label>
<input type="text" id="jokeContent" class="form-control" placeholder="Joke Content" #jokeContent>
</div>
<button class="btn btn-primary" (click)="addJoke(jokeHead.value, jokeContent.value)"> Validate </button>
</div>
</div>
<hr>
<joke *ngFor="let joke of jokes" [joke]="joke" (deleteEvt)="deleteJoke($event)"></joke>
the problem is that this.el is always undefined, i dont know why.
PS: i'm using the last version of angular 4
You cannot use the class name for the #ViewChild, you will need a local variable:
#Component({
template: `
<div><span #myVar>xxx</span><div>`
})
class MyComponent {
#ViewChild('myVar') myVar:ElementRef;
ngAfterViewInit() {
console.log(this.myVar.nativeElement);
}
}
This is my html view in angular:
<div class="container">
<div class="row">
<div class="col-md-3">
</div>
<div class="col-md-6">
<div class="jumbotron">
<h2>Complete your Profile</h2>
<h5 style="color:royalblue;">Add your updated Resume to get notified by Recruiters</h5>
<form #ResumeForm="ngForm"
(ngSubmit)="submitResume(ResumeForm.value)">
<div class="form-group">
<label>Resume</label>
<input type="file" name="resume" id="resume" class="form-control">
</div>
<input value="submit" type="submit">
</form>
</div>
</div>
</div>
</div>
My .ts file is here
import { Component, OnInit } from '#angular/core';
#Component({
selector: 'app-candidate-reg-complete',
templateUrl: './candidate-reg-complete.component.html',
styleUrls: ['./candidate-reg-complete.component.css']
})
export class CandidateRegCompleteComponent implements OnInit {
constructor() { }
ngOnInit() {
}
submitResume=function(user){
console.log(user);
}
}
But the console screen shows only object{}. No form content is shown.
I am trying to take file input.
Can anyone help me?
Thanks in advance.
import { Component, OnInit } from '#angular/core';
#Component({
selector: 'app-candidate-reg-complete',
templateUrl: './candidate-reg-complete.component.html',
styleUrls: ['./candidate-reg-complete.component.css']
})
export class CandidateRegCompleteComponent implements OnInit {
constructor() { }
ngOnInit() {
}
submitResume(user){
console.log(user);
}
}
Put your submitResume(value) function outside ngOnInit. It will be called from the html.
submitResume(value){
console.log(value);
}