更新/验证大规模更新rails关联

Question

我的菜谱模型如下

has_many :quantities
has_many :ingredients, :through => :quantities, :uniq => true
has_many :sizes, :through => :quantities, :uniq => true

以及试图重构的控制器动作

class Admin::QuantitiesController < Admin::AdminController
  layout 'admin'

  authorize_resource :class => :controller

  def create
    recipe        = Recipe.find(params[:recipe_id])
    values      = params[:quantity][:ingredient]
    @quantities = Quantity.find(values.keys)

    @quantities_errors = {}
    @quantities.each do |quantity|
        if quantity.value != values[quantity.id.to_s]
            quantity.value = values[quantity.id.to_s]
            if quantity.valid?
                quantity.save
            else
                @quantities_errors[quantity.id] = quantity.errors.messages
            end
        end
    end

    unless @quantities_errors
        redirect_to edit_admin_recipe_path(recipe), notice: 'Ingredients was successfully added.'
    else
        redirect_to edit_admin_recipe_path(recipe), alert: @quantities_errors
    end

  end

end

Answer 1

一些注意事项：

• 这是一个edit_admin_recipe表单，所以您应该发布到Admin::RecipesController#update。
• 使用Rails基础设施为模型(接受_巢式_属性_为)保存嵌套数据。控制器必须保持简单和干净。