Question

我正在使用Simple_form / Rails 4并希望在同一表单上创建多个关系。我的模特是：

class Characteristic < ActiveRecord::Base
  has_and_belongs_to_many :recipes
end

和

class Recipe < ActiveRecord::Base
  has_and_belongs_to_many :characteristics
end

我有一个联接表

  create_table "characteristics_recipes", force: true do |t|
    t.integer "recipe_id"
    t.integer "characteristic_id"
  end

我的表单看起来像

<%= simple_form_for(@recipe, html: {class: 'form-horizontal' }) do |f| %>
  <div class="form-group">
    <%= f.association :characteristics, 
                      :as => :collection_select, 
                      collection: Characteristic.where(category: "Prep Time"), 
                      prompt: "Choose a Prep Time", label: "Prep Time", 
                      value_method: :id %>
  </div>
  <div class="form-group">
    <%= f.association :characteristics, 
                      :as => :collection_select, 
                      collection: Characteristic.where(category: "Cook Time"), 
                      prompt: "Choose a Cook Time", label: "Cook Time", 
                      value_method: :id %>
  </div>
   <%= f.button :submit %>
<% end %>

我的参数只捕获第二个关联，它是一个字符串而不是一个int ...

{"utf8"=>"✓", 
"authenticity_token"=>"GR2mvo1s7=", 
"recipe"=>{ "characteristic_ids"=>"7"}, 
"commit"=>"Create Recipe", 
"action"=>"create", 
"controller"=>"recipes"}

在我的控制器中，我有以下作为我允许的参数：

   def recipe_params
      params.require(:recipe).permit(:characteristic_ids)
    end

我已经尝试将其更改为但是这并不重要，因为我没有捕获第一个关联

   def recipe_params
      params.require(:recipe).permit(:characteristic_ids => [])
    end

如何让多个协会在这里工作？

谢谢!!!!

简单表格HABTM在同一表格上的多个关联

0 个答案: