Angular 6 Forms Cannot find control error












0















I am trying to build form arrays in Angular. When the data didn't show up, I minimized the code to show behavior. I must use form arrays for the final code. Help me please get through this. I'm using Angular 6.



Why am I getting this error:




Error: Cannot find control with name: 'resultOptions'




// My component .ts file

import {FormControl, FormArray, FormBuilder, FormGroup} from '@angular/forms';
export class MyComponent implements OnInit, OnDestroy {

private resultForm: FormGroup;
private destroyed$: Subject<boolean> = new Subject();

resultData = [
{
text: 'My Text',
}];

constructor(private formBuilder: FormBuilder) {

this.resultForm = this.formBuilder.group({
childData: this.formBuilder.array()
});

this.setMainOptions();
}

setMainOptions() {
const control = <FormArray>this.resultForm.controls.childData;
this.resultData.forEach(x => {
control.push(this.formBuilder.group({
text: new FormControl()}))
})
}
ngOnInit() {
}

ngOnDestroy() {
this.destroyed$.complete();
}
}

// my html

<form [formGroup]="resultForm">
<div formArrayName="resultOptions">
<div *ngFor="let mainOption of resultForm.get('childData').controls; let i=index">
<div [formGroupName]="i">
<input [formControlName]="text" />
</div>
</div>
</div>
</form>

<pre>{{resultForm.value | json}}</pre>


Greatly appreciated!










share|improve this question


















  • 1





    can you post a minimal stackblitz ? That will help greatly

    – Akber Iqbal
    Nov 14 '18 at 6:12






  • 1





    Try using childData instead of resultOptions inside HTML.

    – Vishw Patel
    Nov 14 '18 at 6:13








  • 1





    change ` formArrayName="resultOptions"` to ` formArrayName="childData"`. The formArrayName must match what you pass it in the formGroup.

    – pixelbits
    Nov 14 '18 at 6:14













  • share your html view as well to see what is actually referenced there

    – Farooq Khan
    Nov 14 '18 at 6:18
















0















I am trying to build form arrays in Angular. When the data didn't show up, I minimized the code to show behavior. I must use form arrays for the final code. Help me please get through this. I'm using Angular 6.



Why am I getting this error:




Error: Cannot find control with name: 'resultOptions'




// My component .ts file

import {FormControl, FormArray, FormBuilder, FormGroup} from '@angular/forms';
export class MyComponent implements OnInit, OnDestroy {

private resultForm: FormGroup;
private destroyed$: Subject<boolean> = new Subject();

resultData = [
{
text: 'My Text',
}];

constructor(private formBuilder: FormBuilder) {

this.resultForm = this.formBuilder.group({
childData: this.formBuilder.array()
});

this.setMainOptions();
}

setMainOptions() {
const control = <FormArray>this.resultForm.controls.childData;
this.resultData.forEach(x => {
control.push(this.formBuilder.group({
text: new FormControl()}))
})
}
ngOnInit() {
}

ngOnDestroy() {
this.destroyed$.complete();
}
}

// my html

<form [formGroup]="resultForm">
<div formArrayName="resultOptions">
<div *ngFor="let mainOption of resultForm.get('childData').controls; let i=index">
<div [formGroupName]="i">
<input [formControlName]="text" />
</div>
</div>
</div>
</form>

<pre>{{resultForm.value | json}}</pre>


Greatly appreciated!










share|improve this question


















  • 1





    can you post a minimal stackblitz ? That will help greatly

    – Akber Iqbal
    Nov 14 '18 at 6:12






  • 1





    Try using childData instead of resultOptions inside HTML.

    – Vishw Patel
    Nov 14 '18 at 6:13








  • 1





    change ` formArrayName="resultOptions"` to ` formArrayName="childData"`. The formArrayName must match what you pass it in the formGroup.

    – pixelbits
    Nov 14 '18 at 6:14













  • share your html view as well to see what is actually referenced there

    – Farooq Khan
    Nov 14 '18 at 6:18














0












0








0








I am trying to build form arrays in Angular. When the data didn't show up, I minimized the code to show behavior. I must use form arrays for the final code. Help me please get through this. I'm using Angular 6.



Why am I getting this error:




Error: Cannot find control with name: 'resultOptions'




// My component .ts file

import {FormControl, FormArray, FormBuilder, FormGroup} from '@angular/forms';
export class MyComponent implements OnInit, OnDestroy {

private resultForm: FormGroup;
private destroyed$: Subject<boolean> = new Subject();

resultData = [
{
text: 'My Text',
}];

constructor(private formBuilder: FormBuilder) {

this.resultForm = this.formBuilder.group({
childData: this.formBuilder.array()
});

this.setMainOptions();
}

setMainOptions() {
const control = <FormArray>this.resultForm.controls.childData;
this.resultData.forEach(x => {
control.push(this.formBuilder.group({
text: new FormControl()}))
})
}
ngOnInit() {
}

ngOnDestroy() {
this.destroyed$.complete();
}
}

// my html

<form [formGroup]="resultForm">
<div formArrayName="resultOptions">
<div *ngFor="let mainOption of resultForm.get('childData').controls; let i=index">
<div [formGroupName]="i">
<input [formControlName]="text" />
</div>
</div>
</div>
</form>

<pre>{{resultForm.value | json}}</pre>


Greatly appreciated!










share|improve this question














I am trying to build form arrays in Angular. When the data didn't show up, I minimized the code to show behavior. I must use form arrays for the final code. Help me please get through this. I'm using Angular 6.



Why am I getting this error:




Error: Cannot find control with name: 'resultOptions'




// My component .ts file

import {FormControl, FormArray, FormBuilder, FormGroup} from '@angular/forms';
export class MyComponent implements OnInit, OnDestroy {

private resultForm: FormGroup;
private destroyed$: Subject<boolean> = new Subject();

resultData = [
{
text: 'My Text',
}];

constructor(private formBuilder: FormBuilder) {

this.resultForm = this.formBuilder.group({
childData: this.formBuilder.array()
});

this.setMainOptions();
}

setMainOptions() {
const control = <FormArray>this.resultForm.controls.childData;
this.resultData.forEach(x => {
control.push(this.formBuilder.group({
text: new FormControl()}))
})
}
ngOnInit() {
}

ngOnDestroy() {
this.destroyed$.complete();
}
}

// my html

<form [formGroup]="resultForm">
<div formArrayName="resultOptions">
<div *ngFor="let mainOption of resultForm.get('childData').controls; let i=index">
<div [formGroupName]="i">
<input [formControlName]="text" />
</div>
</div>
</div>
</form>

<pre>{{resultForm.value | json}}</pre>


Greatly appreciated!







angular angular-forms angular-formbuilder






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 14 '18 at 6:09









user1019042user1019042

90931954




90931954








  • 1





    can you post a minimal stackblitz ? That will help greatly

    – Akber Iqbal
    Nov 14 '18 at 6:12






  • 1





    Try using childData instead of resultOptions inside HTML.

    – Vishw Patel
    Nov 14 '18 at 6:13








  • 1





    change ` formArrayName="resultOptions"` to ` formArrayName="childData"`. The formArrayName must match what you pass it in the formGroup.

    – pixelbits
    Nov 14 '18 at 6:14













  • share your html view as well to see what is actually referenced there

    – Farooq Khan
    Nov 14 '18 at 6:18














  • 1





    can you post a minimal stackblitz ? That will help greatly

    – Akber Iqbal
    Nov 14 '18 at 6:12






  • 1





    Try using childData instead of resultOptions inside HTML.

    – Vishw Patel
    Nov 14 '18 at 6:13








  • 1





    change ` formArrayName="resultOptions"` to ` formArrayName="childData"`. The formArrayName must match what you pass it in the formGroup.

    – pixelbits
    Nov 14 '18 at 6:14













  • share your html view as well to see what is actually referenced there

    – Farooq Khan
    Nov 14 '18 at 6:18








1




1





can you post a minimal stackblitz ? That will help greatly

– Akber Iqbal
Nov 14 '18 at 6:12





can you post a minimal stackblitz ? That will help greatly

– Akber Iqbal
Nov 14 '18 at 6:12




1




1





Try using childData instead of resultOptions inside HTML.

– Vishw Patel
Nov 14 '18 at 6:13







Try using childData instead of resultOptions inside HTML.

– Vishw Patel
Nov 14 '18 at 6:13






1




1





change ` formArrayName="resultOptions"` to ` formArrayName="childData"`. The formArrayName must match what you pass it in the formGroup.

– pixelbits
Nov 14 '18 at 6:14







change ` formArrayName="resultOptions"` to ` formArrayName="childData"`. The formArrayName must match what you pass it in the formGroup.

– pixelbits
Nov 14 '18 at 6:14















share your html view as well to see what is actually referenced there

– Farooq Khan
Nov 14 '18 at 6:18





share your html view as well to see what is actually referenced there

– Farooq Khan
Nov 14 '18 at 6:18












1 Answer
1






active

oldest

votes


















1














i tried to reproduce your error with stackblitz and found that you have to modify the code to accomplish what you want, with my best understanding. please check the link the code now not throwing any error in console.



The changed code as follows:



  /// Component 

import { Component, OnInit, OnDestroy } from '@angular/core';
import {FormControl, FormArray, FormBuilder, FormGroup} from '@angular/forms';

@Component({
selector: 'my-app',
templateUrl: './app.component.html',
styleUrls: [ './app.component.css' ]
})
export class AppComponent implements OnInit, OnDestroy {

private resultForm: FormGroup;
// private destroyed$: Subject<boolean> = new Subject();

resultData = [
{
text: 'My Text 1',
},
{
text: 'My Text 2',
},
{
text: 'My Text 3',
},
{
text: 'My Text 4',
}];

constructor(private formBuilder: FormBuilder) {

this.resultForm = this.formBuilder.group({
childData: this.formBuilder.array()
});

this.setMainOptions();
}

setMainOptions() {
const control = <FormArray>this.resultForm.controls.childData;
this.resultData.forEach(x => {
control.push( new FormControl(x.text))
})
}

ngOnInit() {
}

ngOnDestroy() {
// this.destroyed$.complete();
}
}

\ HTML
<form [formGroup]="resultForm">
<div formArrayName="childData">
<ng-container>
<div *ngFor="let mainOption of resultForm.get('childData').controls; let i=index">
<input formControlName='{{i}}' />
</div>
</ng-container>
</div>
</form>

{{resultForm.get('childData').controls.length}}

<pre>{{resultForm.value | json}}</pre>





share|improve this answer

























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    active

    oldest

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    active

    oldest

    votes









    1














    i tried to reproduce your error with stackblitz and found that you have to modify the code to accomplish what you want, with my best understanding. please check the link the code now not throwing any error in console.



    The changed code as follows:



      /// Component 

    import { Component, OnInit, OnDestroy } from '@angular/core';
    import {FormControl, FormArray, FormBuilder, FormGroup} from '@angular/forms';

    @Component({
    selector: 'my-app',
    templateUrl: './app.component.html',
    styleUrls: [ './app.component.css' ]
    })
    export class AppComponent implements OnInit, OnDestroy {

    private resultForm: FormGroup;
    // private destroyed$: Subject<boolean> = new Subject();

    resultData = [
    {
    text: 'My Text 1',
    },
    {
    text: 'My Text 2',
    },
    {
    text: 'My Text 3',
    },
    {
    text: 'My Text 4',
    }];

    constructor(private formBuilder: FormBuilder) {

    this.resultForm = this.formBuilder.group({
    childData: this.formBuilder.array()
    });

    this.setMainOptions();
    }

    setMainOptions() {
    const control = <FormArray>this.resultForm.controls.childData;
    this.resultData.forEach(x => {
    control.push( new FormControl(x.text))
    })
    }

    ngOnInit() {
    }

    ngOnDestroy() {
    // this.destroyed$.complete();
    }
    }

    \ HTML
    <form [formGroup]="resultForm">
    <div formArrayName="childData">
    <ng-container>
    <div *ngFor="let mainOption of resultForm.get('childData').controls; let i=index">
    <input formControlName='{{i}}' />
    </div>
    </ng-container>
    </div>
    </form>

    {{resultForm.get('childData').controls.length}}

    <pre>{{resultForm.value | json}}</pre>





    share|improve this answer






























      1














      i tried to reproduce your error with stackblitz and found that you have to modify the code to accomplish what you want, with my best understanding. please check the link the code now not throwing any error in console.



      The changed code as follows:



        /// Component 

      import { Component, OnInit, OnDestroy } from '@angular/core';
      import {FormControl, FormArray, FormBuilder, FormGroup} from '@angular/forms';

      @Component({
      selector: 'my-app',
      templateUrl: './app.component.html',
      styleUrls: [ './app.component.css' ]
      })
      export class AppComponent implements OnInit, OnDestroy {

      private resultForm: FormGroup;
      // private destroyed$: Subject<boolean> = new Subject();

      resultData = [
      {
      text: 'My Text 1',
      },
      {
      text: 'My Text 2',
      },
      {
      text: 'My Text 3',
      },
      {
      text: 'My Text 4',
      }];

      constructor(private formBuilder: FormBuilder) {

      this.resultForm = this.formBuilder.group({
      childData: this.formBuilder.array()
      });

      this.setMainOptions();
      }

      setMainOptions() {
      const control = <FormArray>this.resultForm.controls.childData;
      this.resultData.forEach(x => {
      control.push( new FormControl(x.text))
      })
      }

      ngOnInit() {
      }

      ngOnDestroy() {
      // this.destroyed$.complete();
      }
      }

      \ HTML
      <form [formGroup]="resultForm">
      <div formArrayName="childData">
      <ng-container>
      <div *ngFor="let mainOption of resultForm.get('childData').controls; let i=index">
      <input formControlName='{{i}}' />
      </div>
      </ng-container>
      </div>
      </form>

      {{resultForm.get('childData').controls.length}}

      <pre>{{resultForm.value | json}}</pre>





      share|improve this answer




























        1












        1








        1







        i tried to reproduce your error with stackblitz and found that you have to modify the code to accomplish what you want, with my best understanding. please check the link the code now not throwing any error in console.



        The changed code as follows:



          /// Component 

        import { Component, OnInit, OnDestroy } from '@angular/core';
        import {FormControl, FormArray, FormBuilder, FormGroup} from '@angular/forms';

        @Component({
        selector: 'my-app',
        templateUrl: './app.component.html',
        styleUrls: [ './app.component.css' ]
        })
        export class AppComponent implements OnInit, OnDestroy {

        private resultForm: FormGroup;
        // private destroyed$: Subject<boolean> = new Subject();

        resultData = [
        {
        text: 'My Text 1',
        },
        {
        text: 'My Text 2',
        },
        {
        text: 'My Text 3',
        },
        {
        text: 'My Text 4',
        }];

        constructor(private formBuilder: FormBuilder) {

        this.resultForm = this.formBuilder.group({
        childData: this.formBuilder.array()
        });

        this.setMainOptions();
        }

        setMainOptions() {
        const control = <FormArray>this.resultForm.controls.childData;
        this.resultData.forEach(x => {
        control.push( new FormControl(x.text))
        })
        }

        ngOnInit() {
        }

        ngOnDestroy() {
        // this.destroyed$.complete();
        }
        }

        \ HTML
        <form [formGroup]="resultForm">
        <div formArrayName="childData">
        <ng-container>
        <div *ngFor="let mainOption of resultForm.get('childData').controls; let i=index">
        <input formControlName='{{i}}' />
        </div>
        </ng-container>
        </div>
        </form>

        {{resultForm.get('childData').controls.length}}

        <pre>{{resultForm.value | json}}</pre>





        share|improve this answer















        i tried to reproduce your error with stackblitz and found that you have to modify the code to accomplish what you want, with my best understanding. please check the link the code now not throwing any error in console.



        The changed code as follows:



          /// Component 

        import { Component, OnInit, OnDestroy } from '@angular/core';
        import {FormControl, FormArray, FormBuilder, FormGroup} from '@angular/forms';

        @Component({
        selector: 'my-app',
        templateUrl: './app.component.html',
        styleUrls: [ './app.component.css' ]
        })
        export class AppComponent implements OnInit, OnDestroy {

        private resultForm: FormGroup;
        // private destroyed$: Subject<boolean> = new Subject();

        resultData = [
        {
        text: 'My Text 1',
        },
        {
        text: 'My Text 2',
        },
        {
        text: 'My Text 3',
        },
        {
        text: 'My Text 4',
        }];

        constructor(private formBuilder: FormBuilder) {

        this.resultForm = this.formBuilder.group({
        childData: this.formBuilder.array()
        });

        this.setMainOptions();
        }

        setMainOptions() {
        const control = <FormArray>this.resultForm.controls.childData;
        this.resultData.forEach(x => {
        control.push( new FormControl(x.text))
        })
        }

        ngOnInit() {
        }

        ngOnDestroy() {
        // this.destroyed$.complete();
        }
        }

        \ HTML
        <form [formGroup]="resultForm">
        <div formArrayName="childData">
        <ng-container>
        <div *ngFor="let mainOption of resultForm.get('childData').controls; let i=index">
        <input formControlName='{{i}}' />
        </div>
        </ng-container>
        </div>
        </form>

        {{resultForm.get('childData').controls.length}}

        <pre>{{resultForm.value | json}}</pre>






        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Nov 17 '18 at 20:41

























        answered Nov 14 '18 at 6:58









        Kedar9444Kedar9444

        38328




        38328






























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