radio button with same formcontrol name is getting selected together on click in angular7

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https://stackblitz.com/edit/angular-7aqzj2

places = ['effil tower','new discover']

new FormGroup({place: new FormControl()});
 <div *ngIf="places?.length > 0" class="col-12">
            <div style=" padding-top: 1em; ">
                <label  *ngFor="let place of places">
                    <input  formControlName="place" type="radio">{{place}}
                </label>
            </div>
        </div>

You need to use property binding for each option:

<input  formControlName="place" type="radio" [value]="place">

Angular 7|8|9 Radio Buttons Example, Angular 7 Radio Buttons - Learn to create and validate Radio Whereas reactive form takes help of FormBuilder and FormControl Forms Radio Button Validation; Set Radio Button Selected in Angular class="custom-control-input" value="male" name="gender" ngModel <!�€“- Don't click me1 �€“-> 3. Set Radio Button and Checkbox Checked To set a value in radio button and checkbox, we can use two methods of FormGroup. setValue(): It sets values to all form controls. patchValue(): It sets values to selected form controls. For the example we are using patchValue() here.

The input needs to have a value defined. Additionally when you construct the FormGroup you can define a default value if you would like.

This question might help you more. Angular 5 Reactive Forms - Radio Button Group

 <div *ngIf="places?.length > 0" class="col-12">
            <div style=" padding-top: 1em; ">
                <label  *ngFor="let place of places">
                    <input  formControlName="place" type="radio" value=place>{{place}}
                </label>
            </div>
        </div>

Radio Button not support formControlName in reactive form � Issue , get Error: ERROR Error: No value accessor for form control with mat-radio- button should support formControlName withiout parrent I encountered a same issue after I upgraded to Angular 5 together with You have to bind to checked and pass it a false when the selected My project is on Angular 7. Radio buttons are normally presented in radio groups (a collection of radio buttons describing a set of related options). Only one radio button in a group can be selected at the same time. Note: The radio group must have share the same name (the value of the name attribute) to be treated as a group. Once the radio group is created, selecting

places = ['effil tower','new discover']

new FormGroup({place: new FormControl(this.places[0])});
 <div *ngIf="places?.length > 0" class="col-12">
            <div style=" padding-top: 1em; ">
                <label  *ngFor="let place of places">
                    <input  formControlName="place" type="radio" [value]="place">{{place}}
                </label>
            </div>
        </div>

(Reactive Forms)Radio name and formControlName must match in , GitHub is home to over 50 million developers working together to host and On submit, get the values of the radio form controls in a FormArray I am correctly using the same name value for all radio inputs in the same group. fix(forms): use full control path on radio buttons when name is absent #23727. On click of Male radio button, we will get value as m and for Female, value will be f. 4.9. change change event emits MatRadioChange when the checked state of the radio button changes by user interaction. It is declared in MatRadioButton as following.

Angular Radio Button and Checkbox Example, Validation of radio button means at least one option must be checked to call get() method of FormGroup and pass the name of form control to� Radio Buttons. Radio buttons are a little bit easier than checkboxes since we don't have to store multiple values. A radio button will just be one value since you can only select one thing. Let's add in radio boxes and see how they are data-bound.

RadioControlValueAccessor, Get Data from a Server The value accessor is used by the FormControlDirective , FormControlName , and NgModel directives. When using radio buttons in a reactive form, radio buttons in the same group should have the same formControlName . Sets the "checked" property value on the radio input element. Select box, radio button, file upload, multi-select, checkbox, and so on. All these components are beneficial to create an interactive web application. Finally, Angular Material Select Dropdown Example is over. See also. Angular Forms. Angular checkbox. Angular Material checkbox. Angular Material Icons. Angular Radio Button

Here in the above code we have created 2 radio buttons with value set as “Male” and “Female” respectively and made gender “Male” selected default radio button. [checked]='true' in the above code represents that the radiobutton is the selected by default. Bind Click event for radio button in Angular 2

Comments
  • Sorry, but the question isn't really clear. Can you please create a Minimal, Complete, and Verifiable example? Maybe a stackblitz to illustrate what exactly is happening.
  • please check below stackblitz. stackblitz.com/edit/angular-7aqzj2
  • I am trying to select one radio button but it is getting selected both
  • There are errors in your stackblitz demo. Dropdown values aren't loading. Please check.
  • sorry i missed to save.. try now
  • thanks a lot.. it worked.. just curious how I can make the first index of the array by default in the dropdown?
  • Glad to help! Sorry didn't get you. Which dropdown are you talking about?
  • Extend your *ngFor to pass the first value through *ngFor="let place of places; let first = first;". And then set selected if first is true, <option [selected]="first"></option>
  • I do have 2 dropdowns in the screen.. by default I want to display the first index of the array.. for example, France and Paris should be selected
  • @atitpatel: Maybe this can help.