如何从另一个组件 n ember.js 调用组件中的函数？

如何解决如何从另一个组件 n ember.js 调用组件中的函数？

单击编辑按钮后，我在打印用户组件中，我正在重定向编辑用户组件。 我必须将数据从打印用户发送到编辑用户。 所以我从打印用户组件类调用编辑用户组件类函数。 但它显示错误

app/components/print-user.hbs

</input5>
    <table class="styled-table">
        <thead>
            <tr><th>User Id</th>
                <th>Firstname</th>
                <th>Lastname</th>
                <th>Mailid</th>
                <th>Delete</th>
            </tr>
        </thead>
        {{#each this.dummyresponse.Users_data as |user|}}
            <tbody>
                <tr>
                    <td>{{user.id}}</td>
                    <td>{{user.firstname}}</td>
                    <td>{{user.lastname}}</td>
                    <td>{{user.mailid}}</td>
                    <LinkTo @route="edit-user" ><button {{on "click" (fn edituser user.id user.firstname user.lastname user.mailid )}} >Edit</button>r</LinkTo></td>
                </tr>
            </tbody>
        {{/each}}
    </table>
{{yield}}

app/components/print-user.js

import Component from '@glimmer/component';
import {action} from "@ember/object";
import {tracked} from "@glimmer/tracking";
import EditUserComponent from './edit-user';
export default class PrintUserComponent extends Component {
    @tracked dummyresponse="";
    @action 
    async printuser (){
        let response=await fetch("/UserManagement/SearchServlet",{   method: "POST",body: JSON.stringify({
                "type": "","searchtext": ""
            })
        });
        this.dummyresponse=await response.json();
        
    }
    edituser (id,firstname,lastname,mailid){
        alert("print-user.js entered");
        console.log(EditUserComponent.edituser(id,mailid));
        alert("print-user.js after method call entered");
    }
}

app/components/edit-user.hbs

import Component from '@glimmer/component';

export default class EditUserComponent extends Component {

    async edituser (id,mailid){
        alert("edit-user.js entered");
        let response=await fetch("/UserManagement/UserManagementServlet",body: JSON.stringify({
                "type": "edit","id": id,"firstname":firstname,"lastname":lastname,"mailid":mailid
            })
        });
    }
}

app/components/edit-user.js

import Component from '@glimmer/component';

export default class EditUserComponent extends Component {

    async edituser (id,"mailid":mailid
            })
        });
    }
}

Uncaught TypeError: _editUser.default.edituser is not a function
    at Proxy.edituser (print-user.js:88)
    at Proxy.<anonymous> (runtime.js:7105)

解决方法

您正在尝试将 edituser 的 EditUserComponent 方法用作 edituser 的 PrintUserComponent 方法中的静态方法。简化后的代码如下所示：

import EditUserComponent from './edit-user';
console.log(EditUserComponent.edituser(id,firstname,lastname,mailid));

您不是在类的实例上调用 edituser 方法，而是在类本身上调用。也许您正在寻找一个很好的旧效用函数？

// app/utils/edituser.js

async function edituser (id,mailid){
    alert("edit-user.js entered");
    let response=await fetch("/UserManagement/UserManagementServlet",{   method: "POST",body: JSON.stringify({
            "type": "edit","id": id,"firstname":firstname,"lastname":lastname,"mailid":mailid
        })
    });
}

export default edituser;

可以像这样使用该实用程序函数：

import edituser from '../utils/edituser';
console.log(edituser(id,mailid));

组件只能在模板中调用。所以他们肯定不是你想要的。