Angular2 If ngModel is used within a form tag, either the name attribute must be set or the form

by

If ngForm is used, all the input fields which have [(ngModel)]="" must have an attribute name with a value.

<input [(ngModel)]="firstname" name="something">

Standalone

By setting [ngModelOptions]="{standalone: true}" one tells Angular something like, ignore the form and/or ngForm, just bind it to firstname variable please.

However, if form-tag was used by mistake (like in my case sometimes), changing form to div is another option (but only if your styles don’t need form-tag).

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