關係模型軌道

Question

林關聯模型和IM卡我有我的餐廳控制器

before_action :set_restaurant, only: [:show, :edit, :update, :destroy] 

def new 
    @restaurant = Restaurant.new 
    @restaurant.build_chef 
end 

def create 
    @restaurant = Restaurant.new(restaurant_params) 

    respond_to do |format| 
    if @restaurant.save 
     format.html { redirect_to @restaurant, notice: 'Restaurant was successfully created.' } 
     format.json { render action: 'show', status: :created, location: @restaurant } 
    else 
     format.html { render action: 'new' } 
     format.json { render json: @restaurant.errors, status: :unprocessable_entity } 
    end 
    end 
end 

def set_restaurant 
    @restaurant = Restaurant.find(params[:id]) 
end 

def restaurant_params 
    params.require(:restaurant).permit(:avatar, :name, :description, 
    chef_attributes: [ :avatar, :name ] 
    ) 
end 

這是我_form，即時通訊在create.html.erb渲染

<%= form_for(@restaurant, multipart: true) do |f| %> 
    <div class="field"> 
    <%= f.label :restaurant_name %> 
    <%= f.text_field :name %> 
    </div> 
    <div class="field"> 
    <%= f.label :description %> 
    <%= f.text_field :description %> 
    </div> 
    <div class="field"> 
    <%= f.label :image %> 
    <%= f.file_field :avatar %> 
    </div> 

    <%= f.fields_for :chef do |f| %> 
    <div class="field"> 
     <%= f.label :chef_name %> 
     <%= f.text_field :name %> 
    </div> 
    <div class="field"> 
     <%= f.label :image %> 
     <%= f.file_field :avatar %> 
    </div> 
    <% end %> 
    <div class="actions"> 
    <%= f.submit 'Add new restaurant' %> 
    <%= link_to 'Nevermind', restaurants_path, class: 'button' %> 
    </div> 
<% end %> 

那麼這是我的廚師模型

class Chef < ApplicationRecord 
    belongs_to :restaurant 

    validates :name, presence: true 
    validates :avatar, 
    attachment_content_type: { content_type: /\Aimage\/.*\Z/ }, 
    attachment_size: { less_than: 5.megabytes } 

    has_attached_file :avatar, styles: { 
    thumb: '100x100>', 
    square: '200x200#', 
    medium: '300x300>' 
    } 
end 

，這是我的餐廳模型

class Restaurant < ApplicationRecord 
    has_one :chef 
    accepts_nested_attributes_for :chef 

    validates :name, presence: true 
    validates :avatar, 
    attachment_content_type: { content_type: /\Aimage\/.*\Z/ }, 
    attachment_size: { less_than: 5.megabytes } 

    has_attached_file :avatar, styles: { 
    thumb: '100x100>', 
    square: '200x200#', 
    medium: '300x300>' 
    } 
end 

我的問題是，當我保存一個新的餐廳，沒有任何反應只是重新加載和留在窗體中，我不知道發生什麼我卡在這裏，可能它只是一個愚蠢的事情，但即時學習，謝謝支持。

Answer 1

它看起來像你的問題是有關this question。在Rails 5中，有關於belongs_to關聯的隱式驗證，所以您需要添加required: false以便從嵌套屬性構建它。

class Chef < ApplicationRecord 
    belongs_to :restaurant, required: false 
    ... 
end