jquery - RoR: Nested Forms Model attributes inside other model attributes -

i'm making project "project has_many tasks, , task has task1, task1 has task 2 , task2 has task3. "

but im stuck in making way insert tasks in 1 form,

im using nested form gem,

this thought'd work.

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 model

class task < activerecord::base  has_many :tsk1s   belongs_to :projeto    accepts_nested_attributes_for :tsk1s, allow_destroy: true  end 

tsk1.erb model

class tsk1 < activerecord::base  belongs_to :task   has_many :tsk2s    accepts_nested_attributes_for :tsk2s, allow_destroy: true end 

same tsk2.erb, tsk3 belongs_to

a piece of form bellow, adding tsk2, tsk3 same , tsk1 too.

<%= f.fields_for :tsk2s |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 %> 

this saves task , tsk1 attributes,

task controller:

 def create @task = task.new(task_params)  respond_to |format|   if @task.save     format.html { redirect_to @task, notice: 'task 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 

end

 def new @task = task.new 

end

full form code http://pastebin.com/dswzgfns

one of reason in form code, :tsk2s, :tsk3s nested in tasks per model code, :tsk2s should nested in :tsk1s , :tsk3s should nested in :tsk2s.

change form accordingly below

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