ember.js - Ember Octane 如何清除表格错误？

Question

这个问题与Ember Octane How to Get Error Messages to be Displayed?有关

问题:清除表单错误的正确方法是什么，我该怎么做？我希望每次用户访问表单时都运行它。表单错误是在 Controller JS 文件中生成的。用例如下:

用户导航到表单

用户提供错误的输入，导致错误被
显示

用户离开表单并执行其他操作

用户返回表单并重新显示现有错误(我不
希望这发生)

在 Ember Classic 中，我可以使用以下代码片段清除组件 JS 文件中的表单错误:

从'@ember/array'导入{A}；

...

init() {
    this._super(... arguments);
    this.set('errors', A([]));
},

但是，在 Ember Octane 中，我收到以下 ESLint 错误:

Don't use this._super in ES classes ember/no-ember-super-in-es-classes

我尝试将代码片段更改为:

import { A } from '@ember/array';

...

init() {
    super(... arguments);
    this.set('errors', A([]));
}

不幸的是，我收到以下错误:

super() is only valid inside a class constructor of a subclass. Maybe a typo in the method name ('constructor') or not extending another class?

代码

模板组件 HBS:

<div class="middle-box text-center loginscreen animated fadeInDown">
    <div>
        <h3>Change Password</h3>
        <form class="m-t" role="form" {{on "submit" this.changePassword}}>
            {{#each @errors as |error|}}
                <div class="error-alert">{{error.detail}}</div>
            {{/each}}
            <div class="form-group">
                <Input @type="password" class="form-control" placeholder="Old Password" @value={{this.oldPassword}} required="true" />
            </div>
            <div class="form-group">
                <Input @type="password" class="form-control" placeholder="New Password" @value={{this.newPassword}} required="true" />
            </div>
            <div class="form-group">
                <Input @type="password" class="form-control" placeholder="Confirm Password" @value={{this.confirmPassword}} required="true" />
            </div>
            <div>
                <button type="submit" class="btn btn-primary block full-width m-b">Submit</button>
            </div>
        </form>
    </div>
</div>

模板 HBS:

<Clients::ChangePasswordForm @changePasswordModel={{this.model}} @changePassword={{action 'changePassword'}} @errors={{this.errors}} />

组件JS:

import Component from '@glimmer/component';
import { tracked } from '@glimmer/tracking';
import { action } from '@ember/object';

export default class ChangePasswordForm extends Component {

    constructor() {
        super(...arguments);
        this.errors  = []
    }

    @tracked oldPassword;
    @tracked newPassword;
    @tracked confirmPassword;
    @tracked errors;    

    @action
    changePassword(ev) {

        ev.preventDefault();

        this.args.changePassword({
            oldPassword: this.oldPassword,
            newPassword: this.newPassword,
            confirmPassword: this.confirmPassword
        });
    }
}

Controller JS

import Controller from '@ember/controller';
import { inject as service } from '@ember/service';
import { action } from '@ember/object';

export default class ChangePassword extends Controller {

    @service ajax;
    @service session;

    @action
    changePassword(attrs) { 

        if(attrs.newPassword == attrs.oldPassword)
        {
            this.set('errors', [{
                detail: "The old password and new password are the same.  The password was not changed.",
                status: 1003,
                title: 'Change Password Failed'
            }]);
        }
        else if(attrs.newPassword != attrs.confirmPassword)
        {
            this.set('errors', [{
                detail: "The new password and confirm password must be the same value.  The password was not changed.",
                status: 1003,
                title: 'Change Password Failed'
            }]);
        }
        else
        {
            let token = this.get('session.data.authenticated.token');

            this.ajax.request(this.store.adapterFor('application').get('host') + "/clients/change-password", {
                method: 'POST',
                data: JSON.stringify({ 
                    data: {
                        attributes: {
                            "old-password" : attrs.oldPassword,
                            "new-password" : attrs.newPassword,
                            "confirm-password" : attrs.confirmPassword
                        },
                        type: 'change-passwords'
                    }
                }),
                headers: {
                    'Authorization': `Bearer ${token}`,
                    'Content-Type': 'application/vnd.api+json',
                    'Accept': 'application/vnd.api+json'
                }
            })
            .then(() => {

                this.transitionToRoute('clients.change-password-success');
            })
            .catch((ex) => {

                this.set('errors', ex.payload.errors);
            });
        }
    }
}

我发布了一个 Ember-Twiddle:

https://ember-twiddle.com/364eaf05a2e1072994b61f255032eb62?openFiles=templates.application%5C.hbs%2C

Answer 1

经典的 Ember 是

 init() {
    this._super(...arguments);
  }

ember Octane 使用类构造函数

constructor() {
    super(...arguments);
  }

Ember.js Octane vs Classic Cheat Sheet

看看我做的这个例子:
example

我已经编辑了你的旋转文件，
我向 Controller 添加了一个 clearErrors 操作，

 @action
  clearErrors(){
     this.set('errors',[]);
  }

然后将其作为参数传递给组件，

<Clients::ChangePasswordForm @changePasswordModel={{this.model}} @changePassword={{action 'changePassword'}}
@clearErrors={{action 'clearErrors'}} 
@errors={{this.errors}} />

然后在组件的每个初始化中我调用 clearErrors ，

    constructor() {
        super(...arguments);
        this.args.clearErrors();
    }