我正在将Angular7 mat-checkbox与反应形式一起使用。下面是代码。
shared: FormGroup;
constructor(private router: Router, fb: FormBuilder,private filterServices:FilterServices) {
this.shared = fb.group({
"byAll": false,
"byFriends": false,
"byPeers": false,
"byExperts": false,
"bySpecificFriends": false,
"byNone":false,
"permissionType":"share",
"emails": []
});
}
在nginit函数上,我正在从db获取数据,如下所示
ngOnInit(){
this.filterServices.getFilters(12).subscribe((res)=>{
console.log(res);
this.setFormvalues(res);
})
}
setFormvalues(response:any){
response.forEach(element => {
this.sharedEmails = [];
this.sharedEmails = element['emails'].split(',');
this.shared.value['byAll'] = element["byAll"]
this.shared.value['byExperts'] = element['byExperts']
this.shared.value['byFriends'] = element['byFriends']
this.shared.value['byNone'] = element['byNone']
this.shared.value['byPeers'] = element['byPeers']
this.shared.value['bySpecificFriends'] = element['bySpecificFriends']
console.log(this.shared)
})
}
我能够将数据设置为共享库中的属性,但是未选中html中的复选框。假设shared ['byAll']最初为false(最初未选中该复选框),但是在通过服务调用获取数据后,现在其值为true。但是在html中,它没有得到反映,我的意思是复选框未被选中。我在哪里出错了?
下面是html代码。
<form [formGroup]="shared">
<div fxLayout="row" fxLayoutGap="20px">
<mat-checkbox formControlName="byAll">All</mat-checkbox>
</div>
</form>
答案 0 :(得分:0)
尝试一下
this.shared.value['byAll'].setValue(element["byAll"]);
答案 1 :(得分:0)
我知道了!
如果只更新几个值,则可以使用patchValue;否则,如果要更新表单组中的所有值,则可以使用setValue。
补丁值格式
if (document.getElementById('theme')) {
if (localStorage) {
// console.log('storidge');
if (!localStorage.getItem('theme')) {
localStorage.setItem('theme', 'dark');
} else {
if (localStorage.getItem('theme') == 'dark') {
$("link[id='theme']").attr('href', '/static/css/dark.css');
} else if (localStorage.getItem('theme') == 'light') {
$("link[id='theme']").attr('href', '/static/css/light.css');
}
}
}
}
$('#toggle-theme').click(function() {
if ($("link[id='theme']").attr('href') == '/static/css/dark.css') {
$("link[id='theme']").attr('href', '/static/css/light.css');
localStorage.setItem('theme', 'light');
console.log('changed to light.css');
} else {
$("link[id='theme']").attr('href', '/static/css/dark.css');
localStorage.setItem('theme', 'dark');
console.log('changed to dark.css');
}
});