How can I conceal the word "null" within an Angular 2 input field?

Whenever there is a null value in the JSON, it ends up displaying in the input field. How do I go about hiding it so that only the name shows up instead?

<div>
    <input type="hidden" 
        name="roleUserHidden-{{roleIndex}}" 
        #roleUser="ngModel" 
        [ngModel]="role.UserId === 'null' ? '' : role.UserId " />
    <input [disabled]="!permissions.canEdit" 
        class="form-control" 
        auto-complete 
        [ngModel]="role === 'null' ? '' : role" [source]="usersForAllocationSource.bind(this)" 
        list-formatter="Name" 
        name="roleUserAuto-{{roleIndex}}" 
        #roleUserVisible="ngModel" 
        (valueChanged)="usersForAllocationSelected(role, $event, roleUser)" 
        display-property-name="UserName" 
        [accept-user-input]="false" 
        (ngModelChange)="onRoleUserChange($event, role)" 
        [min-chars]="2">
</div>

Answer №1

A straightforward solution :

<input name='name' [ngModel]="obj?.val">

Alternatively :

<input name='name' [ngModel]="obj.val ? obj.val  : '' ">

Check out the plunker here

Answer №2

To conceal the entire input element, you can use the *ngIf="value" directive with 'value' representing whatever is empty...

If you prefer the value to be an empty string, simply apply

[value]="value === 'empty' ? '' : value"

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