Angular: radio button [checked] not set with template reference variable - html

Question

As the title suggests, I have a scenario where, if the "Select All" radio button is checked, it must check all of the radio buttons in the columns below. Unfortunately, this is not working.
Here is a sample:
<table>
<thead>
<th>Role</th>
<th colspan="3">Access</th>
</thead>
<tbody>
<tr>
<td>Select All</td>
<td>
<input #none type="radio" name="access0" value="allNone"/>
<label>None</label>
</td>
<td>
<input #readOnly type="radio" name="access0" value="allReadOnly"/>
<label>Read Only</label>
</td>
<td>
<input #full type="radio" name="access0" value="AllFull"/>
<label>Full</label>
</td>
</tr>
<tr>
<td>Admin</td>
<td>
<input type="radio" name="access1" value="None" [checked]="none.checked"/>
<label>None</label>
</td>
<td>
<input type="radio" name="access1" value="ReadOnly" [checked]="readOnly.checked"/>
<label>Read Only</label>
</td>
<td>
<input type="radio" name="access1" value="Access" [checked]="full.checked"/>
<label>Full</label>
</td>
</tr>
<tr>
<td>Sales Person</td>
<td>
<input type="radio" name="access2" value="None" [checked]="none.checked"/>
<label>None</label>
</td>
<td>
<input type="radio" name="access2" value="ReadOnly" [checked]="readOnly.checked"/>
<label>Read Only</label>
</td>
<td>
<input type="radio" name="access2" value="Access" [checked]="full.checked"/>
<label>Full</label>
</td>
</tr>
</tbody>
</table>
And here is a link to a sample StackBlitz.
I am not sure why, for instance, all of the 'None' radio buttons are not checked when setting the [checked] as follow:
<input type="radio" name="access1" value="None" [checked]="none.checked"/>

Answer 1

disclamer it's not an answer, is an answer to a comment about use [(ngModel)] into a ReactiveForm.
#monstertjie_za, the doc indicate that you don't use in the same input TOGETHER formControlName and [(ngModel)], Not that you can not use a input into a reactive form. Imagine your example. You has a reactiveForm like
form=new FormGroup({
accessAdmin:new FormControl(),
accessPersonal:new FormControl()
})
But you want allow the user a rapid selection
<form [formGroup]="form">
<!--a input that not belong to the ReactiveForm that use [(ngModel)]-->
<div>
<label><input type="radio" value="None" [ngModelOptions]="{standalone:true}"
[ngModel]="access" (ngModelChange)="change($event)"/>None</label>
<label><input type="radio" value="ReadOnly" [ngModelOptions]="{standalone:true}"
[ngModel]="access" (ngModelChange)="change($event)"/>ReadOnly</label>
<label><input type="radio" value="Access" [ngModelOptions]="{standalone:true}"
[ngModel]="access" (ngModelChange)="change($event)"/>Access</label>
</div>
<!--inputs that belong to our formGroup-->
<div>
<label><input type="radio" value="None" formControlName="accessAdmin"/>None</label>
<label><input type="radio" value="ReadOnly" formControlName="accessAdmin"/>ReadOnly</label>
<label><input type="radio" value="Access" formControlName="accessAdmin"/>Access</label>
</div>
<div>
<label><input type="radio" value="None" formControlName="accessPersonal"/>None</label>
<label><input type="radio" value="ReadOnly" formControlName="accessPersonal"/>ReadOnly</label>
<label><input type="radio" value="Access" formControlName="accessPersonal"/>Access</label>
</div>
</form>
<pre>
{{form?.value|json}}
</pre>
where you has a function like
change(value) {
this.form.get('accessAdmin').setValue(value);
this.form.get('accessPersonal').setValue(value);
}
You can see the stackblitz demo
You see that we use a input with [(ngModel)] to help the user to change the value of form.accessAdmin and form.accessPersonal. It is not related with the link you show me and is perfectly formed -even I'll say that it's good to help the user-

Answer 2

Check for changes:
<table (click)="cd.detectChanges()">
<thead>
<th>Role</th>
<th colspan="3">Access</th>
</thead>
<tbody>
<tr>
<td>Select All</td>
<td>
<input #none type="radio" name="access0" value="allNone"/>
<label>None</label>
</td>
<td>
<input #readOnly type="radio" name="access0" value="allReadOnly"/>
<label>Read Only</label>
</td>
<td>
<input #full type="radio" name="access0" value="AllFull"/>
<label>Full</label>
</td>
</tr>
<tr>
<td>Admin</td>
<td>
<input type="radio" name="access1" [value]="None" [checked]="none.checked"/>
<label>None</label>
</td>
<td>
<input type="radio" name="access1" value="ReadOnly" [checked]="readOnly.checked"/>
<label>Read Only</label>
</td>
<td>
<input type="radio" name="access1" value="Access" [checked]="full.checked"/>
<label>Full</label>
</td>
</tr>
<tr>
<td>Sales Person</td>
<td>
<input type="radio" name="access2" value="None" [checked]="none.checked"/>
<label>None</label>
</td>
<td>
<input type="radio" name="access2" value="ReadOnly" [checked]="readOnly.checked"/>
<label>Read Only</label>
</td>
<td>
<input type="radio" name="access2" value="Access" [checked]="full.checked"/>
<label>Full</label>
</td>
</tr>
</tbody>
</table>
And TS:
import {ChangeDetectorRef, Component} from '#angular/core';
#Component({
selector: 'my-app',
templateUrl: './app.component.html',
styleUrls: [ './app.component.css' ]
})
export class AppComponent {
constructor(protected cd: ChangeDetectorRef){}
}

Answer 3

you have to use ngModel to update the radio button values like this -
app.component.html
<table>
<thead>
<th>Role</th>
<th colspan="3">Access</th>
</thead>
<tbody>
<tr>
<td>Select All</td>
<td>
<input type="radio" name="access0" value="allNone"
[(ngModel)]='none'/>
<label>None</label>
</td>
<td>
<input [(ngModel)]='readonly' type="radio" name="access0" value="allReadOnly"/>
<label>Read Only</label>
</td>
<td>
<input [(ngModel)]='full' type="radio" name="access0" value="AllFull"/>
<label>Full</label>
</td>
</tr>
<tr>
<td>Admin</td>
<td>
<input type="radio" name="access1" [value]="1" [checked]='none'/>
<label>None</label>
</td>
<td>
<input type="radio" name="access1" value="ReadOnly" [checked]='readonly'/>
<label>Read Only</label>
</td>
<td>
<input type="radio" name="access1" value="Access" [checked]="full"/>
<label>Full</label>
</td>
</tr>
<tr>
<td>Sales Person</td>
<td>
<input type="radio" name="access2" value="None" [checked]="none"/>
<label>None</label>
</td>
<td>
<input type="radio" name="access2" value="ReadOnly" [checked]="readonly"/>
<label>Read Only</label>
</td>
<td>
<input type="radio" name="access2" value="Access" [checked]="full"/>
<label>Full</label>
</td>
</tr>
</tbody>
</table>
app.component.ts
import { Component } from '#angular/core';
#Component({
selector: 'my-app',
templateUrl: './app.component.html',
styleUrls: [ './app.component.css' ]
})
export class AppComponent {
name = 'Angular';
public none=false;
public readonly=false;
public full=false;
}