Question

我试图创建一个具有belongs_to关联的记录。我有一个带有余烬前端的导轨后端。

我能够创建用户，但无法弄清楚如何为用户创建帖子，即

# rails/db/seeds.rb

user.posts.create(title: "bonjour")

滑轨

以下是铁轨模型

class Post < ActiveRecord::Base
  belongs_to :user
end

class User < ActiveRecord::Base
  has_many :posts, :dependent => :destroy
end

这是帖子控制器：

class Api::PostsController < ApplicationController

...

  def update
    post = Post.find(params[:id])
    post.title = params[:post]['title']
    post.save!
    render json: post
  end

  def create
    user = User.find(params[:id])
    post = user.posts.create(title: params[:title])
    render json: post
  end

end

以下是序列化程序＆＃39;文件

# app/serializers/posts_serializer.rb
class PostSerializer < ActiveModel::Serializer
  attributes :id, :title, :user_id
end

# app/serializers/user_serializer.rb
class UserSerializer < ActiveModel::Serializer
  embed :ids, include: true

  attributes :id, :name
  has_many :posts
end

灰烬

以下是Ember模型

// app/models/post.js

export default DS.Model.extend({
  title: DS.attr('string'),
  user: DS.belongsTo('user', { async: true})
});

// app/models/user.js

export default DS.Model.extend({
  name: DS.attr('string'),
  posts: DS.hasMany('post')
});

以下是帖子的create.js文件

// app/routes/posts/create.js

export default Ember.Route.extend({

model: function () {
    return this.store.createRecord('post', {
        title: ''
    });
},

actions: {
    create: function () {
        var my_model = this.controller.get('model');
        my_model.save();
        this.transitionTo('users.show', my_model);
    }
  }
});

这是create.hbs模板

app/templates/posts/create.hbs

<h4 class="create-new-post">Create New Post</h4>

{{input value=title class='post-title'}}

<p><button type='submit' {{action 'create'}} class='commit-post-creation'>Submit</button></p>

最后，这是app / router.js文件

...    

Router.map(function() {
  this.resource('users', function () {
    this.route('show', {path: ':user_id'});
    this.route('edit', {path: ':user_id/edit'});
    this.route('create', {path: 'create'});
  });

  this.resource('posts', function () {
    this.route('show', {path: ':post_id'});
    this.route('edit', {path: ':post_id/edit'});
    this.route('create', {path: 'create'});
  });

});

...

当我尝试创建帖子时，我收到错误：

POST http://localhost:4200/api/posts 404 (Not Found)

帖子最初显示，但没有与帖子关联的用户，然后在页面刷新时消失。

感谢。任何帮助将非常感激。我只是在学习Ember，对于这篇庞大的帖子感到抱歉。

如何创建与ember.js前端和rails后端的belongsTo关联记录

0 个答案: