我正在从数据库加载整数类型值以填充表单组的单选按钮。如果我将传入的整数转换为字符串,则收音机组仅读取值。如何使mat-radio-group接受整数值?
我尝试将value="1"
更改为[value]="1"
,但这没有任何效果。我唯一能找到的参考是在material2 github页面here
HTML
<form class="mb-4" [formGroup]="wifiForm">
<label id="wifi_available">Is working WiFi present on the property?</label>
<mat-radio-group
aria-labelledby="wifi_available"
class="list-radio-group w-100 mb-4 mt-2"
formControlName="wifi_available"
name="wifi_available"
fxLayout="column"
required
>
<mat-radio-button class="list-radio-button" color="primary" [value]="1">Yes</mat-radio-button>
<mat-radio-button class="list-radio-button" color="primary" [value]="2">No</mat-radio-button>
<mat-error *ngIf="wifiForm.controls.wifi_available.hasError('required').required && wifiForm.controls.wifi_available.touched" class="error"
>Required field</mat-error
>
</mat-radio-group>
...rest of form...
</form>
组件
ngOnInit() {
this.wifiForm = this.fb.group({
wifi_available: ['', Validators.required],
wifi_deadspots: ['', Validators.required],
wifi_notes: [''],
});
this.orderId = this.route.snapshot.paramMap.get('id');
this.wifiData = this.route.snapshot.data['order_data']; <== WHERE DATA IS BROUGHT IN
this.wifiForm.patchValue(this.wifiData); <== WHERE DATA IS PATCHED
}
来自数据库的值[示例] { wifi_available:1, wifi_deadspots:1, wifi_notes:'熏腊肉...' }
我希望相应地检查mat-radio按钮(如果为1,则选中“是”)。如果我将db字段类型更改为VARCHAR,则按预期检查单选按钮。如果db字段为INT(应为INT),则不会选中任何单选按钮。
答案 0 :(得分:0)
我添加了
[checked]="wifiForm.value.wifi_available === true"
使用mat-radio-button(wifiForm将1/0视为布尔值),并且有效。
我只需要更新html
<form class="mb-4" [formGroup]="wifiForm">
<label id="wifi_available">Is working WiFi present on the property?</label>
<mat-radio-group
aria-labelledby="wifi_available"
class="list-radio-group w-100 mb-4 mt-2"
formControlName="wifi_available"
name="wifi_available"
fxLayout="column"
required
>
<mat-radio-button class="list-radio-button" color="primary [checked]="wifiForm.value.wifi_available === true" value="1">Yes</mat-radio-button>
<mat-radio-button class="list-radio-button" color="primary [checked]="wifiForm.value.wifi_available === false"value="0">No</mat-radio-button>
... </form>
这可以解决我遇到同样问题的其他组件中的其他值。