ember.js - 禁用/启用带有 ember 验证状态的表单提交按钮

Question

我正在使用“ember-validations”插件添加表单验证。我能够进行内联验证，但我需要根据验证状态禁用/启用按钮。

组件.js

export default Ember.Component.extend(EmberValidations, {
validations: {
    'model.firstName': {
      presence: true,
      presence: { message: 'Please enter valid first name.' }      
    },
    'model.lastName': {
      presence: true,
      presence: { message: 'Please enter valid last name.' }      
    },
    'model.email': {
      presence: true ,
      presence: { message: 'Please enter valid email name.' }     
    },
    'model.department': {
      presence: true,
      presence: { message: 'Please enter valid department name.' }      
    },
}
});

模板.hbs

<form class="form-horizontal" role="form">
<div class="form-group">
<label class="control-label col-sm-3" for="fname">First Name:</label>
<div class="col-sm-8">
    {{validated-input type="text" placeholder="First Name" value=model.firstName errors=errors.model.firstName}}
 </div>
 </div>
<div class="form-group">
<label class="control-label col-sm-3" for="lname">Last Name:</label>
<div class="col-sm-8">
  {{validated-input type="text" placeholder="Last Name" value=model.lastName errors=errors.model.lastName}}
  </div>
 </div>
<div class="form-group">
<label class="control-label col-sm-3" for="email">Email:</label>
<div class="col-sm-8">
   {{validated-input type="email" placeholder="Email" value=model.email errors=errors.model.email}}
</div>
</div>
<div class="form-group">
<label class="control-label col-sm-3" for="department">Department:</label>
<div class="col-sm-8">
    {{validated-input type="text" placeholder="Department" value=model.department errors=errors.model.department}}
</div>
</div>
{{#bs-button classNames="table-btn" action=(action "saveAction" model) buttonType="button" type="update"}}Save{{/bs-button}}
</form>

截屏

如何在使用ember 验证时获得总表单输入验证状态，以便我可以将该标志用于禁用/启用按钮？

Answer 1

查看ember-validations 文档：

user.validate().then(function() {
  // all validations pass
  user.get('isValid'); // true
}).catch(function() {
  // any validations fail
  user.get('isValid'); // false
}).finally(function() {
  // all validations complete
  // regardless of isValid state
 user.get('isValid'); // true || false
});

我猜你可以设置一个计算属性别名yourModel.get("isValid")：

// in your controller or component:
isSaveButtonDisabled: Ember.computed.not("user.isValid")

然后在您的模板中：

...
</div>
{{#bs-button classNames="table-btn" disabled=isSaveButtonDisabled action=(action "saveAction" model) buttonType="button" type="update"}}Save{{/bs-button}}
</form>

我只是不确定你的bs-buttonfor的语法是什么disabled=isSaveButtonDisabled。