Review all control documents

Question

Review all control documents

I initialize a formGroup like so

this.availableSigners = new FormGroup({
        nameSigner: new FormControl(),
        mailSigner: new FormControl()
});

and in my HTML component I have the following structure

<div *ngFor="let signer of signers;  let i = index">
                    <div class="form-row">
<div class="card-body col-md-4" style="padding-top: 0.75rem !important">
    <b>{{signer.name}}  {{signer.surname}} 
    </b>&nbsp;
 </div>
 </div> 
 <div class="form-row" >      
     <div class="col-md-4">
           <ng-select #mailDocumentSelect 
                  formControlName="mailSigner" [items]="mails"
                  bindValue="code" bindLabel="description"  
                  (click)="getMails()">
            </ng-select>
  </div>
   <div class="col-md-4">
                                <ng-select>
                                </ng-select>
  </div>
                    </div>
                    <br>   
                </div>

where "signers" is a list that gets populated by a click event to create a list of select mail options.

The issue arises when attempting to ensure that ALL "mailSigner" form control fields have a value.

I've created a function triggered by another button click:

 getCompiledFeq(){

  if(this.availableSigners.get('mailSigner').value){
     return true;
  }
  return false;
 }

However, this function currently returns true as long as there is at least one selected value (not validating all form controls).

How can I implement validation to check that every select form field is filled?

javascript angular typescript

Answer 1

Answer №1

It is crucial to ensure that each form control has a unique name, otherwise conflicts may arise.

To differentiate between form controls, you can use an index.

In your TypeScript file, iterate through all the signers and assign a unique ID for each signer in the form of:

this.availableSigners = new FormGroup({
    nameSigner: new FormControl(),
    mailSigners: new FormArray()
});

for (let i = 0; i < signers.length; i++) {
    this.availableSigners.get('mailSigners').push('mailSigner-' + i , new FormControl('', Validators.required));
}

Additionally, update the formControlName in your HTML file to "mailSigner-{{i}}" to maintain a unique index.

<div *ngFor="let signer of signers; let i = index">
    <div class="form-row">
        <div class="card-body col-md-4" style="padding-top: 0.75rem !important">
            <b>{{signer.name}} {{signer.surname}}</b>&nbsp;
        </div>
    </div>
    <div class="form-row">      
        <div class="col-md-4">
            <ng-select #mailDocumentSelect formControlName="mailSigner-{{i}}" [items]="mails" bindValue="code" bindLabel="description" (click)="getMails()">
            </ng-select>
        </div>
        <div class="col-md-4">
            <ng-select>
            </ng-select>
        </div>
    </div>
    <br>   
</div>

Answer 2

It is crucial to ensure that each form control has a unique name, otherwise conflicts may arise.

To differentiate between form controls, you can use an index.

In your TypeScript file, iterate through all the signers and assign a unique ID for each signer in the form of:

this.availableSigners = new FormGroup({
    nameSigner: new FormControl(),
    mailSigners: new FormArray()
});

for (let i = 0; i < signers.length; i++) {
    this.availableSigners.get('mailSigners').push('mailSigner-' + i , new FormControl('', Validators.required));
}

Additionally, update the formControlName in your HTML file to "mailSigner-{{i}}" to maintain a unique index.

<div *ngFor="let signer of signers; let i = index">
    <div class="form-row">
        <div class="card-body col-md-4" style="padding-top: 0.75rem !important">
            <b>{{signer.name}} {{signer.surname}}</b>&nbsp;
        </div>
    </div>
    <div class="form-row">      
        <div class="col-md-4">
            <ng-select #mailDocumentSelect formControlName="mailSigner-{{i}}" [items]="mails" bindValue="code" bindLabel="description" (click)="getMails()">
            </ng-select>
        </div>
        <div class="col-md-4">
            <ng-select>
            </ng-select>
        </div>
    </div>
    <br>   
</div>

Answer 3

Answer №2

Why not implement the use of Validators and designate nameSigner as a mandatory field? Your FormGroup will only be considered valid if all FormControls with a required Validator are filled.

To make the control required:

this.availableSigners = new FormGroup({
        nameSigner: new FormControl('', Validators.required),
        mailSigner: new FormControl()
});

Check if every field has a value:

getCompiledFeq(){

  if(this.availableSigners.valid){
     return true;
  }
  return false;
 }

Refer to Angular Documentation for more information on Validators: https://angular.io/guide/form-validation#reactive-form-validation

Answer 4

Why not implement the use of Validators and designate nameSigner as a mandatory field? Your FormGroup will only be considered valid if all FormControls with a required Validator are filled.

To make the control required:

this.availableSigners = new FormGroup({
        nameSigner: new FormControl('', Validators.required),
        mailSigner: new FormControl()
});

Check if every field has a value:

getCompiledFeq(){

  if(this.availableSigners.valid){
     return true;
  }
  return false;
 }

Refer to Angular Documentation for more information on Validators: https://angular.io/guide/form-validation#reactive-form-validation

Answer 5

Answer №3

When setting up your forms, it is important to initially set nullValidator as suggested, and then mark them as required.

//Include this in your TypeScript file and verify
   get form() { return this.availableSigners.controls }

Make sure to add the following code snippet to check if the form is valid:

 if(this.availableSigners.valid){
     return true;
  }
else{
for(let i in this.availableSigners.controls){
  this.availableSigners.controls[i].markAsTouched();
}
}
 }

Answer 6

When setting up your forms, it is important to initially set nullValidator as suggested, and then mark them as required.

//Include this in your TypeScript file and verify
   get form() { return this.availableSigners.controls }

Make sure to add the following code snippet to check if the form is valid:

 if(this.availableSigners.valid){
     return true;
  }
else{
for(let i in this.availableSigners.controls){
  this.availableSigners.controls[i].markAsTouched();
}
}
 }

Review all control documents

Answer №1

Answer №2

Answer №3

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