Question

I'm using Rails 4.2 with cocoon gem for building nesting form. Everything is saving and displaying just fine except when I want to make new person through entities form. Goal is to make new person on the fly at the same form where i will make new entity.

Here is code:

Models:

class Entity < ActiveRecord::Base  
  has_many :bonds
  has_many :personas, :through => :bonds

  accepts_nested_attributes_for :bonds, allow_destroy: true, reject_if: :all_blank
  accepts_nested_attributes_for :personas, allow_destroy: false, reject_if: :all_blank
end

class Bond < ActiveRecord::Base
  belongs_to :entity
  belongs_to :persona
end

class Persona < ActiveRecord::Base
  has_many :bonds
  has_many :entities, :through => :bonds

  accepts_nested_attributes_for :entities
end

Here is my form that works, except of when i try to add new person to it.

/views/entities/_form.html.erb

<%= simple_form_for @entity do |f| %>

    <h3>Info:</h3>
        <%= f.label :name %>
        <%= f.text_field :name %>

        <%= f.label :number %>
        <%= f.number_field :number %>

    <h3>Bonds:</h3>
    <div id="bonds">
      <%= f.fields_for :bonds do |ff| %>
      <%= render 'bond_fields', :f => ff %>
      <% end %>
      <div class="links">
        <%= link_to_add_association 'add bond', f, :bonds %>
      </div>
    </div>

      <%= f.submit %>
  <% end %>

/entities/_bond_fields.html.erb

<div class='nested-fields'>
    <%= f.label "Persona: " %>
    <div class="persona">
      <div class="persona_from_list">
      <%= f.association :persona, :collection => Persona.order(:name), :prompt => 'Choose an existing owner' %>
      </div>
      <%= link_to_add_association "add a new person as owner", f, :persona %>
    </div>

    <%= f.label "how much: " %>
    <%= f.number_field :how_much %>

    <%= f.label "percent: " %>
    <%= f.number_field :percent %>

  <%= link_to_remove_association "remove bond", f %>
</div>

/entities/_persona_fields.html.erb

  <div class='nested-fields'>
      <%= f.label "Name: " %>
      <%= f.text_field :name %> 

      <%= f.label "Code: " %>
      <%= f.text_field :p_code %>

      <%= link_to_remove_association "chose from list", f %>
  </div>

I have added strong params everywhere so probably that's not the problem. Maybe you can help I have no ideas what is wrong!

Here is my params in /entities_controller

params.require(:entity).permit(:name, :number, :address, :registered_at, 
:bonds_attributes => [:id, :persona_id, :entity_id, :percent, :date, :_destroy, 
:personas_attributes => [:id, :name, :p_kods, :living ] ], 
:personas_attributes => [:id, :name, :p_kods, :living ] )

Thanks anyways...

Answer 1

仔细阅读服务器日志后，我看到有Unpermitted parameter: persona_attributes。

因此解决方案只是在personas_attributes中从persona_attributes更改为EntitiesController。奇怪但是轨道正在传递Persona单数形式的参数，而我写了多个。

希望它也能帮助别人......

Nested form in Rails not saving

1 个答案: