ngForm 无效时禁用按钮

Question

我有一个添加模式，因为我需要在内容填满之前禁用“保存”按钮。当内容被填充时，按钮应该得到 enabled.Here is my code

<div bsModal #editModal="bs-modal" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
<div class="modal-dialog modal-md">
    <div class="modal-content">
        <form name='groupForm' #groupForm="ngForm" novalidate>
            <div class="modal-header">
                <h4 class="modal-title wd-title-popup">Add Access Group</h4>
            </div>
            <div class="modal-body row">
                <div class="col-lg-12 col-md-12 col-sm-12 col-xs-12 accssContent paddingLeftClass">
                    <md-input-container style='width: 100%;margin-bottom: 6px !important;'>
                        <input type="textbox" mdInput name="admin" [(ngModel)]="group.groupName" placeholder="Access Group Name" required>
                    </md-input-container>
                </div>
            </div>
            <div md-theme="reports" class="modal-footer" style="text-align: center;">
                <div layout-align="end center" layout="row">
                    <button md-raised-button class="md-raised color-white" (click)="editModal.hide()" style="width: 45%;margin: 10px 5px;background-color: #FF5252;">Cancel</button>
                    <button md-raised-button class="md-raised color-white" [disabled]="!groupForm.form.valid" (click)="accessGroup(group)" style="width: 45%;margin: 10px 5px;background-color:#58B6A2;">Save</button>
                </div>
            </div>
        </form>
    </div>
</div>

这同样适用于其他按钮。我哪里做错了？

Answer 1

您的表单有 novalidate，这可能会导致表单跳过验证并且未设置有效变量

Answer 2

尝试使用 invalid 属性。像这样更改它：

<button md-raised-button class="md-raised color-white"  
        (click)="accessGroup(group)" 
        [disabled]="groupForm.invalid">Save</button>

Link 到 Plunker Demo.

ngForm 无效时禁用按钮

Disable button while ngForm is invalid

angular2-forms

angular