RoR：其他模型属性中的嵌套表单模型属性

Question

我正在制作一个项目，其中“项目有_many 个任务，TASK 有 Task1，task1 有任务 2，task2 有 task3。”

但我坚持以一种形式插入所有这些任务，

我使用嵌套形式的 gem，

这是我认为可行的。

def task_params
  params.require(:task).permit(:projeto_id, :raiz, :descr, :hour, :typo, :tsk1s_attributes => [:raiz, :descr, :hour, :typo, :_destroy, :tsk2s_attributes => [:raiz, :descr, :hour, :typo, :_destroy, :tsk3s_attributes => [:raiz, :descr, :hour, :typo, :_destroy]]])
end

task.erb 模型

class Task < ActiveRecord::Base
 has_many :tsk1s
  belongs_to :projeto
   accepts_nested_attributes_for :tsk1s, allow_destroy: true
 end

tsk1.erb 模型

class Tsk1 < ActiveRecord::Base
 belongs_to :task
  has_many :tsk2s
   accepts_nested_attributes_for :tsk2s, allow_destroy: true
end

tsk2.erb 相同，tsk3 只属于_to

下面是我的一张表格，这是用于添加 tsk2，tsk3 和 tsk1 相同。

<%= f.fields_for :tsk2s do |tsk2| %>
   <ul class="step">
   <li>
   <%=  tsk2.number_field :raiz, :placeholder => "Identificador" %> 
   <%=  tsk2.text_field :descr, :placeholder => "Descrição" %> 
   <%=  tsk2.number_field :hour, :placeholder => "Carga Horária" %> 
   <%= tsk2.select("typo", {"Analitica" => "Analitica", "Sintetica" => "Sintetica"}) %>
     <%= tsk2.link_to_remove "-" %>  
    <%= f.link_to_add "+Galho", :tsk3s %> </li>
   <% end %>

这实际上只保存了task和tsk1属性，

任务控制器：

 def create
@task = Task.new(task_params)

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

结束

 def new
@task = Task.new

结束

完整的表格代码http://pastebin.com/DSwZGfNs

Answer 1

其中一个原因可能在于您的表单代码，:tsk2s、:tsk3s 嵌套在 tasks 中，但根据模型代码，:tsk2s 应该嵌套在:tsk1s 和:tsk3s 应该嵌套在:tsk2s。

相应地更改您的表单，如下所示

  <%= f.fields_for :tsk1s do |tsk1| %>

  <ul>
  <li>
  <%= tsk1.number_field :raiz, :placeholder => "Identificador" %>
  <%= tsk1.text_field :descr, :placeholder => "Descrição"  %>
  <%= tsk1.number_field :hour , :placeholder => "Carga Horária" %>
  <%= tsk1.select("typo", {"Analitica" => "Analitica", "Sintetica" => "Sintetica"}) %>
  <%= f.link_to_add "+Ramo", :tsk2s %>
  <%= tsk1.link_to_remove "-" %> </li>

  <%= tsk1.fields_for :tsk2s do |tsk2| %>

  <ul class="step">
  <li>
  <%= tsk2.number_field :raiz, :placeholder => "Identificador" %>
  <%= tsk2.text_field :descr, :placeholder => "Descrição" %>
  <%= tsk2.number_field :hour, :placeholder => "Carga Horária" %>
  <%= tsk2.select("typo", {"Analitica" => "Analitica", "Sintetica" => "Sintetica"}) %>
  <%= tsk2.link_to_remove "-" %>  
  <%= f.link_to_add "+Galho", :tsk3s %> </li>

  <%= tsk2.fields_for :tsk3s do |tsk3| %>

  <ul>
  <li>  

  <%= tsk3.number_field :raiz, :placeholder => "Identificador" %>
  <%= tsk3.text_field :descr, :placeholder => "Descrição" %>
  <%= tsk3.number_field :hour, :placeholder => "Carga Horária" %>
  <%= tsk3.select("typo", {"Analitica" => "Analitica", "Sintetica" => "Sintetica"}) %>
  <%= tsk3.link_to_remove "-" %> </li>
  </ul>
  </ul>
  </ul>
  <% end %>
  <% end %>
  <% end &>
  </ul>
  </ul>
  <br>
  <%= f.link_to_add "+Raiz", :tsk1s %> <br> <br> <br>
  <div class="actions">
  <%= f.submit %>
  </div>
  <% end %>