不寫入表格的方法

當我創建類別配方的新對象時，沒有數據被插入到方向模型表格中。不寫入表格的方法

配方控制器：

class RecipesController < ApplicationController 
    before_action :find_recipe, only:[:show, :edit, :update, :destroy] 
    def index 
     @recipe = Recipe.all.order("created_at DESC") 
    end 

    def show 
    end 

    def new 
     @recipe = Recipe.new 
    end 

    def create 
     @recipe = Recipe.new(recipe_params) 

     if @recipe.save 
      redirect_to @recipe, notice: "Dodano nowy przepis" 
     else 
      render 'new' 
     end 
    end 

    def edit 
    end 

    def update 
     if @recipe.update(recipe_params) 
      redirect_to @recipe 
     else 
      render 'edit' 
     end 
    end 

    def destroy 
     @recipe.destroy 
     redirect_to root_path, notice: "Przepis został usunięty" 
    end 



    private 

    def recipe_params 
     params.require(:recipe).permit(:tittle, :description, :image, :portion, :preparation_time, ingredients_attributes: [:id, :name, :_destroy], directions__attributes: [:id, :step, :_destroy], recipe_ingredients_attributes: [:id, :quantity, :_destroy]) 
    end 

    def find_recipe 
     @recipe = Recipe.find(params[:id]) 
    end 



end

配方型號：

class Recipe < ApplicationRecord 
    has_many :directions, inverse_of: :recipe 
    has_many :recipe_ingredients 
    has_many :ingredients, through: :recipe_ingredients 

    accepts_nested_attributes_for :ingredients, 
            reject_if: proc { |attributes| attributes['name'].blank? }, 
            allow_destroy: true 
    accepts_nested_attributes_for :directions, 
            reject_if: proc { |attributes| attributes['step'].blank? }, 
            allow_destroy: true 


    validates :tittle, :description, :image, presence: true 
    has_attached_file :image, styles: { :medium => "400x400#" } 
    validates_attachment_content_type :image, content_type: /\Aimage\/.*\Z/ 

end

方向模型：從控制檯

class Direction < ApplicationRecord 
    belongs_to :recipe, inverse_of: :directions 
end

線有關創建新配方對象：

Started PATCH "/recipes/5" for 127.0.0.1 at 2017-10-13 14:26:06 +0200 
Processing by RecipesController#update as HTML 
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"h4Htdlybl6hiej2msXb5jlNz0Yngz3Mw2Trju9822FgPatUASvQx+it7m+p3WSBX9k7vjLOhJU3vhgtEFlvzIw==", "recipe"=>{"tittle"=>"Tosty", "description"=>"Testowy przepis", "preparation_time"=>"10.0", "portion"=>"2", "ingredients_attributes"=>{"0"=>{"name"=>"Chleb tostowy", "_destroy"=>"false", "id"=>"1"}, "1"=>{"name"=>"Ser zółty", "_destroy"=>"false", "id"=>"2"}, "2"=>{"name"=>"Cebula", "_destroy"=>"false", "id"=>"3"}}, "directions_attributes"=>{"1507897562367"=>{"step"=>"sdfsfd", "_destroy"=>"false"}, "1507897565151"=>{"step"=>"sdfsdfs", "_destroy"=>"false"}}}, "commit"=>"Update Recipe", "id"=>"5"} 
    Recipe Load (0.2ms) SELECT "recipes".* FROM "recipes" WHERE "recipes"."id" = ? LIMIT ? [["id", 5], ["LIMIT", 1]] 
Unpermitted parameter: directions_attributes 
    (0.1ms) begin transaction 
    Ingredient Load (1.7ms) SELECT "ingredients".* FROM "ingredients" INNER JOIN "recipe_ingredients" ON "ingredients"."id" = "recipe_ingredients"."ingredient_id" WHERE "recipe_ingredients"."recipe_id" = ? AND "ingredients"."id" IN (1, 2, 3) [["recipe_id", 5]] 
    (0.5ms) commit transaction 
Redirected to http://localhost:3000/recipes/5 
Completed 302 Found in 21ms (ActiveRecord: 2.6ms)

正如你可以在上面的db查詢字符串中看到的，方向屬性不帶id，這可能是主要原因。 Altough ...我不知道如何解決這個問題。

請幫忙，因爲我在這個問題上奮鬥了很長一段時間。

來源

2017-10-13 MajQel

你需要'圖像'，但你不通過它。 –

這是因爲Unpermitted parameter: directions_attributes。

directions__attributes刪除額外的_強烈params。

內

def recipe_params 
     params.require(:recipe).permit(:tittle, :description, :image, :portion, :preparation_time, ingredients_attributes: [:id, :name, :_destroy], directions__attributes: [:id, :step, :_destroy], recipe_ingredients_attributes: [:id, :quantity, :_destroy]) 
    end

變化directions_attributes。它會起作用。

來源

2017-10-13 12:40:44

不寫入表格的方法

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