If ngModel is used within a form tag, either the name attribute must be set or the form control must be defined as ‘standalone’ in ngModelOptions.
原文链接:这里
0.背景
angular项目,用的NG-ZORRO
一个简单的表单提交页面,本来不想用form,直接写的row和col。但是页面太丑了,加上form吧,开始报错(其实就是不熟练)。
1.报错原因及解决方法
我的当时的非主流代码如下:
<form nz-form>
<nz-row>
<nz-col nzSpan="12">
<nz-form-item>
<nz-form-label [nzSm]="6" [nzXs]="24" nzFor="region">地区</nz-form-label>
<nz-form-control [nzSm]="18" [nzXs]="24">
<input nz-input [(ngModel)]="tableData.region" formControlName="region"
placeholder="地区" id="region"/>
</nz-form-control>
</nz-form-item>
</nz-col>
<nz-col nzSpan="12">
<nz-form-item>
<nz-form-label [nzSm]="6" [nzXs]="24" nzFor="lawCode">项目名称</nz-form-label>
<nz-form-control [nzSm]="18" [nzXs]="24">
<input nz-input [(ngModel)]="tableData.lawCode" formControlName="lawCode"
placeholder="项目名称" id="lawCode"/>
</nz-form-control>
</nz-form-item>
</nz-col>
</nz-row>
</form>
一开始直接用的input,后来觉得不好看,改成form后,开始报下面的错:
formControlName must be used with a parent formGroup directive. You'll want to add a formGroup
directive and pass it an existing FormGroup instance (you can create one in your class).
我想了想我这个非主流代码,于是就把formControlName给删除了,结果报错:
If ngModel is used within a form tag, either the name attribute must be set or the form<br>control must be defined as 'standalone' in ngModelOptions.
大概的意思是,如果你要在form中使用ngModel,必须定义stanalone。好吧,终于根据提示加上了代码。
<form nz-form>
<nz-row>
<nz-col nzSpan="12">
<nz-form-item>
<nz-form-label [nzSm]="6" [nzXs]="24" nzFor="region">地区</nz-form-label>
<nz-form-control [nzSm]="18" [nzXs]="24">
<input nz-input [(ngModel)]="tableData.region" [ngModelOptions]="{standalone: true}"
placeholder="地区" id="region"/>
</nz-form-control>
</nz-form-item>
</nz-col>
<nz-col nzSpan="12">
<nz-form-item>
<nz-form-label [nzSm]="6" [nzXs]="24" nzFor="lawCode">项目名称</nz-form-label>
<nz-form-control [nzSm]="18" [nzXs]="24">
<input nz-input [(ngModel)]="tableData.lawCode" [ngModelOptions]="{standalone: true}"
placeholder="项目名称" id="lawCode"/>
</nz-form-control>
</nz-form-item>
</nz-col>
</nz-row>
</form>
这样表单就好看多了。