How to set <iframe src="..."> without causing `unsafe value` exception?

Question

I am working on a tutorial involving the setting of an iframe src attribute:

<iframe width="100%" height="300" src="{{video.url}}"></iframe>

This throws an exception:

Error: unsafe value used in a resource URL context
at DomSanitizationServiceImpl.sanitize...

I have already tried using bindings with [src] with no success.

Answer 1

Update v8

Below answers work but exposes your application to XSS security risks!. Instead of using this.domSanitizer.bypassSecurityTrustResourceUrl(url), it is recommended to use this.domSanitizer.sanitize(SecurityContext.URL, url)

Update

For RC.6^ version use DomSanitizer

Plunker

And a good option is using pure pipe for that:

import { Pipe, PipeTransform } from '@angular/core';
import { DomSanitizer} from '@angular/platform-browser';

@Pipe({ name: 'safe' })
export class SafePipe implements PipeTransform {
  constructor(private domSanitizer: DomSanitizer) {}
  transform(url) {
    return this.domSanitizer.bypassSecurityTrustResourceUrl(url);
  }
} 

remember to add your new SafePipe to the declarations array of the AppModule. (as seen on documentation)

@NgModule({
   declarations : [
     ...
     SafePipe
   ],
})

html

<iframe width="100%" height="300" [src]="url | safe"></iframe>

Plunker

If you use embed tag this might be interesting for you:

• how with angular2 rc.6 disable sanitize on embed html tag which display pdf

---

Old version RC.5

You can leverage DomSanitizationService like this:

export class YourComponent {
  url: SafeResourceUrl;
  constructor(domSanitizationService: DomSanitizationService) {
    this.url = domSanitizer.bypassSecurityTrustResourceUrl('your url');
  }
}

And then bind to url in your template:

<iframe width="100%" height="300" [src]="url"></iframe>

Don't forget to add the following imports:

import { SafeResourceUrl, DomSanitizationService } from '@angular/platform-browser';

Plunker sample

Answer 2

This one works for me.

import { Component,Input,OnInit} from '@angular/core';
import {DomSanitizer,SafeResourceUrl,} from '@angular/platform-browser';

@Component({
    moduleId: module.id,
    selector: 'player',
    templateUrl: './player.component.html',
    styleUrls:['./player.component.scss'],
    
})
export class PlayerComponent implements OnInit{
    @Input()
    id:string; 
    url: SafeResourceUrl;
    constructor (public sanitizer:DomSanitizer) {
    }
    ngOnInit() {
        this.url = this.sanitizer.bypassSecurityTrustResourceUrl(this.id);      
    }
}

Answer 3

This works me to Angular 5.2.0

fileName.Component.ts

import { Component, OnInit, Input } from '@angular/core';
import { DomSanitizer, SafeResourceUrl } from '@angular/platform-browser';

@Component({
  selector: 'app-sample',
  templateUrl: './fileName.component.html',
  styleUrls: ['./fileName.component.scss']
})

export class FileName implements OnInit {
  @Input()
  url: string = "https://www.mmlpqtpkasjdashdjahd.com";
  urlSafe: SafeResourceUrl;

  constructor(public sanitizer: DomSanitizer) { }

  ngOnInit() {
    this.urlSafe= this.sanitizer.bypassSecurityTrustResourceUrl(this.url);
  }

}

fileName.Component.html

<iframe width="100%" height="100%" frameBorder="0" [src]="urlSafe"></iframe>

thats all folks!!!

Answer 4

constructor(
 public sanitizer: DomSanitizer, ) {

 }

I had been struggling for 4 hours. the problem was in img tag. When you use square bracket to 'src' ex: [src]. you can not use this angular expression {{}}. you just give directly from an object example below. if you give angular expression {{}}. you will get interpolation error.

1. first i used ngFor to iterate the countries

   *ngFor="let country of countries"
   

2. second you put this in the img tag. this is it.

   <img [src]="sanitizer.bypassSecurityTrustResourceUrl(country.flag)"
   height="20" width="20" alt=""/>