ruby on rails - cocoon gem not passing parameters -

so although have used cocoon before, i'm still relatively new , whatever reason can't seem pass through parameters (i've tried 2 different applications , on fedora 22 , mac 10.10.4).

for context i've been using standard rails forms in .erb , have both :post , :post_items have description. i'm using cocoon 1.2.6.

so in application.js have

//= require cocoon 

in post.rb

class post < activerecord::base   has_many :post_items   accepts_nested_attributes_for :post_items, :reject_if => :all_blank, :allow_destroy => true    validates :title, :post_items, presence: true   validates :title, length: {maximum: 255} end 

in post_item.rb

class postitem < activerecord::base     belongs_to :post end 

and relevant controllers (posts_controller.rb):

def index   @post = post.new end  def create   params[:post][:ip_address] = request.remote_ip   @post = post.create(post_params)    if @post.save     flash[:success] = "your post created"     redirect_to @post   else     flash[:failure] = "there error saving post"     render 'index'   end end  private  def find_post   @post = post.find(params[:id]) end  def post_params   params.require(:post).permit(:title, :tags, :hits, :ip_address, post_items_attributes: [:id, :description, :_destroy]) end 

and in views have (_form.html.erb)

<%= form_for @post, html: {multipart: true} |f| %>     <% if @post.errors.any? %>         <p>there <%= @post.errors.count %> errors</p>         <% @post.errors.full_messages.each |msg| %>             <p><%= msg %></p>         <% end %>     <% end %>            <!-- bunch of fields here --> <div class="six columns">     <h3>add images</h3>     <div id="post_items">         <% f.fields_for :post_items |post_item| %>             <%= render 'post_item_fields', f: post_item %>         <% end %>         <div class="links">             <%= link_to_add_association 'add image', f, :post_items, class: "add-button" %>         </div>     </div>     <%= f.button :submit, class: "button submit-button" %> <% end %> 

and lastly _post_item_fields.html.erb

<div class="nested-fields">   <div class="field">     <%= f.label :description %>     <%= f.text_area :description %>   </div>   <%= link_to_remove_association "remove", f %> </div> 

there css files modify html have no js other what's automatically built. i've literally been stuck on problem days , can't figure out what's wrong. have tried post.rb without validates code still doesn't work.

the lead have when print out parameters has dropped post_items parameters , life of me can't figure out why.

thanks help!

edit: sake of information i've added migrations.

in db/migrate/20150722191917_create_post_items.rb

class createpostitems < activerecord::migration   def change     create_table :post_items |t|       t.string :description       t.belongs_to :post, index: true, foreign_key: true     end   end end 

and in db/migrate/20150722173629_create_posts.rb

class createposts < activerecord::migration   def change     create_table :posts |t|       t.string :title       t.string :tags       t.integer :hits, null: false, default: 0       t.string :ip_address        t.timestamps null: false     end     add_index :posts, :ip_address   end end 

also if matters didn't use scaffold when generating them

well think figured out what's wrong (although don't understand we're supposed around it) once got rid of div class="six columns" worked, apparently interfering cocoon gems ability parse html.

thanks help!

edit: clarify had change _form.html.erb to:

<%= form_for @post, html: {multipart: true} |f| %>     <% if @post.errors.any? %>         <p>there <%= @post.errors.count %> errors</p>         <% @post.errors.full_messages.each |msg| %>             <p><%= msg %></p>         <% end %>     <% end %>            <!-- bunch of fields here -->     <h3>add images</h3>     <div id="post_items">         <% f.fields_for :post_items |post_item| %>             <%= render 'post_item_fields', f: post_item %>         <% end %>         <div class="links">             <%= link_to_add_association 'add image', f, :post_items, class: "add-button" %>         </div>     </div>     <%= f.button :submit, class: "button submit-button" %> <% end %> 

so guess little fault error have been easier spot if had used full html instead of parsing cocoon-relevant bits there regardless. (basically moral of story can't have div's inside of form)