Angular: NG01352: If ngModel is used within a form tag, either the name attribute must be set or the form control must be defined as 'standalone'

Meaning

In template-driven forms every ngModel inside a <form> registers under its name attribute. Add a name, or tell Angular the control is not part of the form with [ngModelOptions]="{standalone: true}".

Common causes

• [(ngModel)] inside <form> without a name attribute
• Dynamic name bound after render ([name] empty)
• ngModel used on buttons or helper inputs that should not join the form
• Copied input from outside a form into a form

Detailed fix by platform

Code examples

<form #f="ngForm">
  <input name="email" [(ngModel)]="user.email" required>
  <input [(ngModel)]="search" [ngModelOptions]="{standalone: true}">   <!-- not part of the form -->
</form>

How to diagnose

1. Element — Which ngModel is missing a name?
2. Binding — Is name bound dynamically?
3. Intent — Should it join the form?

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