Ember.js Route set() 方法

Ember.js是一个开源的JavaScript框架，用于开发基于模型-视图-控制器（MVC）体系结构的大型客户端Web应用程序。Ember.js是最广泛使用的前端应用程序框架之一。它旨在加快开发速度并提高生产力。目前，它被许多网站使用，包括Square、Discourse、Groupon、Linked In、Live Nation、Twitch和Chipotle。

set() 方法将属性的键设置为传递的值。该方法与 object.keyName = value 相同。

语法：

set( keyName, value );

参数:

keyName： 要获取的属性名。
value： 要设置的值。

返回值： 返回具有传递值的对象。

安装和运行Ember.js的步骤：

步骤1： 要运行以下示例，您需要一个Ember项目。首先需要安装ember-cli。在终端中输入以下代码：

npm install ember-cli

步骤2： 现在，您可以通过键入以下代码来创建项目：

ember new <project-name> --lang en

要启动服务器，请键入：

ember serve

示例1: 输入以下代码以生成该示例的路线：

ember generate route set1

app/routes/set1.js

import Route from '@ember/routing/route';
 
export default class FruitsRoute extends Route {
    fruits = [
        {
            'name': 'Lady Finger',
            'isFruit': false,
            'color': 'green'
        },
        {
            'name': 'Brinjal',
            'isFruit': false,
            'color': 'purple'
        },
        {
            'name': 'Apple',
            'isFruit': true,
            'color': 'red'
        },
        {
            'name': 'Grapes',
            'isFruit': true,
            'color': 'green'
        },
        {
            'name': 'Mango',
            'isFruit': true,
            'color': 'yellow'
        },
        {
            'name': 'Watermelon',
            'isFruit': true,
            'color': 'red'
        },
        {
            'name': 'Orange',
            'isFruit': true,
            'color': 'orange'
        }
    ];
    item2;
    item3;
 
    model() {
        this.set('[]', this.fruits)
        return this;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('fruits', this.fruits);
    }
}

app/controllers/get1.js

import Ember from "ember";
import { addObject, isAny, isEvery } from "@ember/array";
import EmberObject from '@ember/object';
 
const Fruit = EmberObject.extend({
    init() {
        alert(`Name is ${this.get('name')}`);
    }
});
export default Ember.Controller.extend({
    actions: {
        removeItem(data) {
            let temp = this.fruits.find((item) => 
                item.color == data)
            this.fruits.set('[]', this.fruits.without(temp));
        },
        insertItem(data, data1, data2) {
            let temp = Fruit.create({
                name: data,
                isFruit: data1,
                color: data2
            });
            this.fruits.addObject(temp);
        }
    },
});

app/templates/set1.hbs

<h3>{{yield}}</h3>
<table>
    <tr>
        <th>Name</th>
        <th>Fruit</th>
        <th>Color</th>
      </tr>
      {{#each this.fruits as |detail|}}
    <tr>
        <td>{{detail.name}}</td>
          <td>{{detail.isFruit}}</td>
          <td>{{detail.color}}</td>
    </tr>
      {{/each}}
</table>
<br /><br />
<div>
    <label>Enter Fruit Name: </label>
      {{input value=this.item1}}
</div><br />
<div>
    <label>Item is Fruit: </label>
      {{input value=this.item2}}
</div><br />
<div>
    <label>Enter Fruit color: </label>
      {{input value=this.item3}}
</div><br />
<div>
    <input
        type="button"
        id="insert-item"
        value="Insert Fruit"
        {{action "insertItem" this.item1 this.item2 this.item3}}
  />
</div>
<br />
<div>
    <label>Enter Fruit color: </label>
      {{input value=this.item4}}
</div><br />
<div>
  <input
      type="button"
        id="remove-item"
      value="Remove Fruit"
      {{action "removeItem" this.item4}}
  />
</div>
{{outlet}}

输出：

Ember.js Route set() 方法

示例2： 输入以下代码以生成此示例的路由：

ember generate route set2

app/routes/set2.js

import Route from '@ember/routing/route';
import Ember from 'ember';
 
let Student = Ember.Object.extend({
    // these will be supplied by `create`
    firstName: null,
    lastName: null,
 
    init() {
        alert(` ${this.get('firstName')} is Listed`); }, fullName: Ember.computed('firstName', 'lastName', function () { return `$ {this.firstName} ${this.lastName}`;
    }),
 
});
export default class PartyRoute extends Route {
    students = [{
        Name: 'Balit',
        skill: 'Python',
        Id: 'stu2',
    },
    {
        Name: 'Permu',
        skill: 'PHP',
        Id: 'stu0',
    },
    {
        Name: 'Sam',
        skill: 'R',
        Id: 'stu1',
    },
    {
        Name: 'Pokhu',
        skill: 'JavaScript',
        Id: 'stu3',
    },
    {
        Name: 'Tanu',
        skill: 'Java',
        Id: 'stu4',
    },
    {
        Name: 'Arabh',
        skill: 'c++',
        Id: 'stu5',
    }];
 
    item3 = 'Gulshan';
    item2 = 'Verma';
    item1 = 'stu6';
    model() {
        return this.students;
    }
    setupController(controller, model) {
        super.setupController(controller, model);
        controller.set('students', this.students);
        controller.set('temp', this.temp);
        controller.set('item1', this.item1);
        controller.set('item2', this.item2);
        controller.set('item3', this.item3);
    }
}

app/controllers/set2.hbs

import Controller from '@ember/controller';
import { action, find } from '@ember/object';
import Ember from 'ember';
 
let Student = Ember.Object.extend({
    // these will be supplied by `create`
    firstName: null,
    lastName: null,
 
    init() {
        alert(` ${this.get('firstName')} is Listed`); }, fullName: Ember.computed('firstName', 'lastName', function () { return `$ {this.firstName}  ${this.lastName}`; }), Changed: Ember.observer('fullName', function () { console.log(`fullName changed to:$ {this.fullName}`);
    }),
});
export default class Array2Controller extends Controller {
 
    @action
    print(data1, data2, data3) {
        let temp = Student.create({
            firstName: data1,
            lastName: data2,
            Id: data3
        });
        this.students.addObject(temp);
    }
}

app/templates/set2.hbs

{{yield}}
<table>
    <tr>
        <th>Name</th>
        <th>skill</th>
        <th>Id</th>
      </tr>
      {{#each @model as |details|}}
    <tr>
        <td>{{details.Name}}</td>
          <td>{{details.skill}}</td>
          <td>{{details.Id}}</td>
    </tr>
      {{/each}}
</table>
<br />
<div>
    <label>Enter Student FirstName: </label>
      {{input value=this.item3}}
</div>
<br />
<div>
    <label>Enter Student LastName: </label>
      {{input value=this.item2}}
</div>
<br />
<div>
    <label>Enter Student Id: </label>
      {{input value=this.item1}}
</div>
<br />
<input
    type="button"
      id="set-code"
      value="Update Student details"
      {{action "print" this.item3 this.item2 this.item1}}
/>
<br />
<br />
<div>
    <label>Enter Student Name: </label>
      {{input value=this.item4}}
</div>
<br />
<input
    type="button"
      id="remove-student"
      value="Remove Student"
      {{action "remove" this.item4}}
/>

输出:

Ember.js Route set() 方法