在Emberjs删除记录

Question

我很努力地按照ember 2.0's documentation删除记录，然后重定向到一个新的网址。当我尝试时，我得到以下错误到控制台：

Error while processing route: pencils Attempted to handle event `pushedData` on <name-emberjs@model:pencil::ember523:null> while in state root.deleted.inFlight. Error: Attempted to handle event `pushedData` on <name-emberjs@model:pencil::ember523:null> while in state root.deleted.inFlight. 

我的文件如下。

途径：

import Ember from 'ember'; 
import config from './config/environment'; 

var Router = Ember.Router.extend({ 
    location: config.locationType 
}); 

Router.map(function() { 
    this.resource('pencilview', { path: '/pencils/:pencil_id' }); 
    this.resource('pencilcreate', { path: '/pencils/new' }); 
    this.resource('pencils'); 
}); 


export default Router; 
import Ember from 'ember'; 
import config from './config/environment'; 

var Router = Ember.Router.extend({ 
    location: config.locationType 
}); 

Router.map(function() { 
    this.resource('pencilview', { path: '/pencils/:pencil_id' }); 
    this.resource('pencilcreate', { path: '/pencils/new' }); 
    this.resource('pencils'); 
}); 


export default Router; 

路由/ pencilview.js

export default Ember.Route.extend({ 
    model: function(params) { 
     return this.store.find('pencil', params.pencil_id); 
    }, 

    actions: { 
     save(pencil){ 
      this.store.find('pencil', pencil.id).then(function(pencil){ 
       pencil.save(); 
      }) 
      this.transitionTo('pencils'); 
     }, 

     remove(id){ 
      this.get('store').find('pencil', id).then(function(pencil2){ 
       pencil2.destroyRecord(); 
      }); 
      this.transitionTo('pencils'); 
     }, 

     cancel(pencil){ 
      this.store.find('pencil'.pencil.id).then(function(pencil){ 
      }) 
     } 
    } 
}); 

模板/ pencilview.hbs

<h2>Single Pencil View</h2> 
<p>Pencil ID: {{model.id}}</p> 

<p> 
<label for='name'>Name</label> 
{{input type="text" id="name" value=model.name}}</p> 

<p> 
<label for='name2'>Name2</label> 
{{input type="text" id="n2" value=model.n2}}</p> 

<p> 
<label for='name3'>Name3</label> 
{{input type="text" id="n3" value=model.n3}}</p> 

<p><button {{action "remove" model.id}}>Delete</button></p> 
<p><button {{action "save" model}}>Save</button></p> 

{{#link-to 'pencils'}}Pencils{{/link-to}} 

控制器/ *

all missing except for pencilcreate.js, not applicable here 

模板/ pencils.hbs

<h2>All Pencils</h2> 
<p>{{#link-to 'pencilcreate' (query-params direction='pencils') class='btn btn-default' }}Create New Pencil{{/link-to}}</p> 

<table id='pencil_allTable' class='display'> 
<thead><tr><td>ID</td><td>Brand</td><</tr></thead> 
<tbody> 
{{#each model as |pencil|}} 
    <tr> 
    <td>{{#link-to "penciliew" pencil class='btn btn-default'}}{{pencil.id}}{{/link-to}}</td> 
    <td>{{pencil.brand}}</td> 
    </tr> 
{{/each}} 
</tbody></table> 

<script> 
$(document).ready(function() { 
    $('#pencil_allTable').DataTable(); 
    }); 
</script> 

路线/ pencil.js

export default Ember.Route.extend({ 
    model() { 
    return this.store.findAll('pencil'); 
    } 
}); 

Answer 1

这是另一个答案的版本，只是收紧了一下。

remove(id) { 
    this.get('store').find('pencil', id) . 
    then(pencil2 => pencil2.destroyRecord()) 
    .then(() => this.transitionTo('pencils')); 
} 

Answer 2

您已经通过this范围在被咬伤：

this.transitionTo('pencils').then(function(id){ 
    this.get('store') // <== this === undefined 

此代码应工作：

remove(id) { 
    this.get('store').find('pencil', id).then(pencil2 => { 
     pencil2.deleteRecord(); 
    }); 
    this.transitionTo('pencils'); 
}, 

Answer 3

让承诺履行本身：

remove(id){ 
     this.get('store').find('pencil', id).then((pencil2) => { 
      pencil2.destroyRecord().then(() => { 
       this.transitionTo('pencils'); 
      }); 
     });   
    }, 

编辑：摆脱const _this的。