Question

我正在努力让很多很多协会与Ember JS和Rails合作，但它似乎没有呈现Role Name

以下是文件：

用户/ index.hbs

{{#each}}
                <tr>
                    <td>{{id}}</td>
                    <td>{{email}}</td>
                    <td>{{title}}</td>
                    <td>{{first_name}}</td>
                    <td>{{last_name}}</td>
                    <td>{{position}}</td>
                    <td>{{work_phone}}</td>
                    <td>{{company}}</td>
                    <td>{{sign_in_count}}</td>
                    <td>{{last_sign_in_ip}}</td>
                    <td>{{confirmed_at}}</td>
                    <td>{{created_at}}</td>
                    <td>
                        {{#each role in roles}}
                            {{role.name}}
                        {{/each}}
                    </td>
                    <td>
                        {{#linkTo 'user' this class='btn btn-sm btn-primary'}}Show{{/linkTo}}
                        <a href="javascript:;" {{action delete this}} class="text-danger">Delete</a>
                    </td>
                </tr>
                {{/each}}

user.js.coffee

VirtualExhibition.User = DS.Model.extend
    email: DS.attr 'string'
    password: DS.attr 'string'
    title: DS.attr 'string'
    first_name: DS.attr 'string'
    last_name: DS.attr 'string'
    position: DS.attr 'string'
    work_phone: DS.attr 'string'
    company: DS.attr 'string'
    sign_in_count: DS.attr 'number'
    last_sign_in_ip: DS.attr 'string'
    confirmed_at: DS.attr 'date'
    created_at: DS.attr 'date'
    venue: DS.hasMany 'VirtualExhibition.Venue'
    roles: DS.belongsTo 'VirtualExhibition.Role'

role.js.coffee

VirtualExhibition.Role = DS.Model.extend
    id: DS.attr 'number'
    name: DS.attr 'string'
    users: DS.hasMany 'VirtualExhibition.User'

user_serializer.rb

class UserSerializer < ActiveModel::Serializer
  attributes :id, :email, :title, :first_name, :last_name, :position, :work_phone, :company, :sign_in_count, :last_sign_in_ip, :confirmed_at, :created_at
  has_many :roles, embed: :ids
end

role_serializer.rb

class RoleSerializer < ActiveModel::Serializer
  attributes :id, :name
  has_many :users, embed: :ids
end

我正在从我的Rails应用程序中获得role_ids作为数组的预期。

但我不确定为什么我从{{role.name}}

得到任何东西

为什么会这样？

JSON

{
users: [
{
id: 2,
email: "example1@gmail.com",
title: "Mr",
first_name: "AA",
last_name: "BB",
position: "Web Dev",
work_phone: "12314",
company: "CC",
sign_in_count: 0,
last_sign_in_ip: null,
confirmed_at: null,
created_at: "2013-11-08T14:27:32.401Z",
role_ids: [
4
]
},
{
id: 3,
email: "example2@example.com",
title: null,
first_name: "Host",
last_name: "Host",
position: null,
work_phone: null,
company: null,
sign_in_count: 0,
last_sign_in_ip: null,
confirmed_at: "2013-11-11T11:09:16.796Z",
created_at: "2013-11-11T11:09:16.832Z",
role_ids: [
1
]
},
{
id: 4,
email: "info@ggg.com.au",
title: null,
first_name: "Visitor",
last_name: "Visitor",
position: null,
work_phone: null,
company: null,
sign_in_count: 0,
last_sign_in_ip: null,
confirmed_at: "2013-11-11T11:09:17.123Z",
created_at: "2013-11-11T11:09:17.125Z",
role_ids: [
2
]
},
{
id: 1,
email: "aaa@saa.com.au",
title: "Mr",
first_name: "Hi",
last_name: "Hello",
position: "Web Developer",
work_phone: "123456",
company: "Comp",
sign_in_count: 11,
last_sign_in_ip: "127.0.0.1",
confirmed_at: "2013-10-29T12:26:00.583Z",
created_at: "2013-10-29T12:23:25.453Z",
role_ids: [
3
]
}
]
}

Answer 1

您的配置中存在一些错误：

<强> user.js.coffee

VirtualExhibition.User = DS.Model.extend
    email: DS.attr 'string'
    password: DS.attr 'string'
    title: DS.attr 'string'
    first_name: DS.attr 'string'
    last_name: DS.attr 'string'
    position: DS.attr 'string'
    work_phone: DS.attr 'string'
    company: DS.attr 'string'
    sign_in_count: DS.attr 'number'
    last_sign_in_ip: DS.attr 'string'
    confirmed_at: DS.attr 'date'
    created_at: DS.attr 'date'        
    venue: DS.hasMany 'venue', async: true
    # here I think that you want hasMany instead of belongsTo, additionally the async: true is needed, since your are fetching the data using ajax.
    # and instead of "VirtualExhibition.Role" you need to use just "role"
    roles: DS.hasMany 'role', async: true

<强> JSON

{
    id: 2,
    email: "example1@gmail.com",
    ...        
    created_at: "2013-11-08T14:27:32.401Z",
    // use roles instead of roles_id
    roles: [
        4
    ]
}

这是更新代码http://jsfiddle.net/marciojunior/MKu46/

的小提琴

此外，我建议您查看DS.ActiveModelAdapter，以便与rails active模型序列化程序实现最佳集成。

Answer 2

模板有拼写错误，角色中应该是角色，单数词

                    {{#each role in roles}}
                        {{role.name}}
                    {{/each}}

你应该兼顾角色

{
    users: [
        {
        id: 2,
        email: "example1@gmail.com",
        title: "Mr",
        first_name: "AA",
        last_name: "BB",
        position: "Web Dev",
        work_phone: "12314",
        company: "CC",
        sign_in_count: 0,
        last_sign_in_ip: null,
        confirmed_at: null,
        created_at: "2013-11-08T14:27:32.401Z",
        role_ids: [
        4
        ]
        },
        { more users...}
    ],
    roles: [
        {role object},
        {role object}
    ]
}

或者将您的Hasmany关系定义为async

VirtualExhibition.User = DS.Model.extend
email: DS.attr 'string'
password: DS.attr 'string'
title: DS.attr 'string'
first_name: DS.attr 'string'
last_name: DS.attr 'string'
position: DS.attr 'string'
work_phone: DS.attr 'string'
company: DS.attr 'string'
sign_in_count: DS.attr 'number'
last_sign_in_ip: DS.attr 'string'
confirmed_at: DS.attr 'date'
created_at: DS.attr 'date'
venue: DS.belongsTo 'VirtualExhibition.Venue'
roles: DS.hasMany 'VirtualExhibition.Role',{async:true}

祝你好运

试图让很多人与Rails和Emberjs合作

2 个答案: