Validation message is not displayed with NgForm in angular6










0















In order to validate an input text field for a book code i'm using ngForm like this way:



 <form name="form" (ngSubmit)="f.form.valid" #f="ngForm" validate>
<div class="table-responsive bg-light rounded py-2 my-0">
<table class="mx-4" cellpadding="5">
<tbody>

<td style="width: 12%;"> <strong>'code' </strong></td>
<td style="width: 20%;">
<input name="code" type="text" class="form-control" [(ngModel)]="book.code" #code="ngModel" minlength="4" [ngClass]=" 'is-invalid': f.submitted && code.invalid "
required id="coderat">
<div *ngIf="f.submitted && code.invalid " class="text-danger">
<div *ngIf=" code.errors.minlength">Le code doit avoir plus que 4 chiffres</div>
<div *ngIf=" code.errors.required">Le code ne doit pas etre nul</div>
</div>
</td>

<div class="text-center">
<button type="submit" class="btn btn-sm btn-outline-success my-1 rounded float-right" (click)="saveBookModification(book,f)"
prevent-double-submit><i class="fa fa-dot-circle-o"></i>Enregister</button>
</div>
</tbody>
</table>
</div>
</form>


can any one find what's wrong with this code
Ps: i used the same way in another page and the validation worked fine.










share|improve this question






















  • can you please also add component.ts & module.ts file.

    – Aravinda Meewalaarachchi
    Nov 14 '18 at 13:32















0















In order to validate an input text field for a book code i'm using ngForm like this way:



 <form name="form" (ngSubmit)="f.form.valid" #f="ngForm" validate>
<div class="table-responsive bg-light rounded py-2 my-0">
<table class="mx-4" cellpadding="5">
<tbody>

<td style="width: 12%;"> <strong>'code' </strong></td>
<td style="width: 20%;">
<input name="code" type="text" class="form-control" [(ngModel)]="book.code" #code="ngModel" minlength="4" [ngClass]=" 'is-invalid': f.submitted && code.invalid "
required id="coderat">
<div *ngIf="f.submitted && code.invalid " class="text-danger">
<div *ngIf=" code.errors.minlength">Le code doit avoir plus que 4 chiffres</div>
<div *ngIf=" code.errors.required">Le code ne doit pas etre nul</div>
</div>
</td>

<div class="text-center">
<button type="submit" class="btn btn-sm btn-outline-success my-1 rounded float-right" (click)="saveBookModification(book,f)"
prevent-double-submit><i class="fa fa-dot-circle-o"></i>Enregister</button>
</div>
</tbody>
</table>
</div>
</form>


can any one find what's wrong with this code
Ps: i used the same way in another page and the validation worked fine.










share|improve this question






















  • can you please also add component.ts & module.ts file.

    – Aravinda Meewalaarachchi
    Nov 14 '18 at 13:32













0












0








0








In order to validate an input text field for a book code i'm using ngForm like this way:



 <form name="form" (ngSubmit)="f.form.valid" #f="ngForm" validate>
<div class="table-responsive bg-light rounded py-2 my-0">
<table class="mx-4" cellpadding="5">
<tbody>

<td style="width: 12%;"> <strong>'code' </strong></td>
<td style="width: 20%;">
<input name="code" type="text" class="form-control" [(ngModel)]="book.code" #code="ngModel" minlength="4" [ngClass]=" 'is-invalid': f.submitted && code.invalid "
required id="coderat">
<div *ngIf="f.submitted && code.invalid " class="text-danger">
<div *ngIf=" code.errors.minlength">Le code doit avoir plus que 4 chiffres</div>
<div *ngIf=" code.errors.required">Le code ne doit pas etre nul</div>
</div>
</td>

<div class="text-center">
<button type="submit" class="btn btn-sm btn-outline-success my-1 rounded float-right" (click)="saveBookModification(book,f)"
prevent-double-submit><i class="fa fa-dot-circle-o"></i>Enregister</button>
</div>
</tbody>
</table>
</div>
</form>


can any one find what's wrong with this code
Ps: i used the same way in another page and the validation worked fine.










share|improve this question














In order to validate an input text field for a book code i'm using ngForm like this way:



 <form name="form" (ngSubmit)="f.form.valid" #f="ngForm" validate>
<div class="table-responsive bg-light rounded py-2 my-0">
<table class="mx-4" cellpadding="5">
<tbody>

<td style="width: 12%;"> <strong>'code' </strong></td>
<td style="width: 20%;">
<input name="code" type="text" class="form-control" [(ngModel)]="book.code" #code="ngModel" minlength="4" [ngClass]=" 'is-invalid': f.submitted && code.invalid "
required id="coderat">
<div *ngIf="f.submitted && code.invalid " class="text-danger">
<div *ngIf=" code.errors.minlength">Le code doit avoir plus que 4 chiffres</div>
<div *ngIf=" code.errors.required">Le code ne doit pas etre nul</div>
</div>
</td>

<div class="text-center">
<button type="submit" class="btn btn-sm btn-outline-success my-1 rounded float-right" (click)="saveBookModification(book,f)"
prevent-double-submit><i class="fa fa-dot-circle-o"></i>Enregister</button>
</div>
</tbody>
</table>
</div>
</form>


can any one find what's wrong with this code
Ps: i used the same way in another page and the validation worked fine.







javascript html angular validation






share|improve this question













share|improve this question











share|improve this question




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asked Nov 14 '18 at 13:17









Java.netJava.net

479




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  • can you please also add component.ts & module.ts file.

    – Aravinda Meewalaarachchi
    Nov 14 '18 at 13:32

















  • can you please also add component.ts & module.ts file.

    – Aravinda Meewalaarachchi
    Nov 14 '18 at 13:32
















can you please also add component.ts & module.ts file.

– Aravinda Meewalaarachchi
Nov 14 '18 at 13:32





can you please also add component.ts & module.ts file.

– Aravinda Meewalaarachchi
Nov 14 '18 at 13:32












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