When I press submit button in form in capybara, the data in the database disappears for some reason.

def update
    # When the post button is pressed, set published to true.If not pressed, save the draft automatically.
    published_torf=params[:commit]?true:false
    if published_torf
      @ranking.update(ranking_params)
      [email protected] lid?
        @ranking.published=true
        @ranking.save
      end
      response_with(@ranking)
    else
      @ranking.attributes=ranking_params
      @ranking.save validate: false
    end
  end

require 'rails_helper'

#Device Test Helper
includeWarden::Test::Helpers
Warden.test_mode!

describe 'login process' do
  let(:user) {create(:user)}
  let(:category) {create(:category)}
  describe 'post/edit' do
    before(:each)do
      category
      login_as(user,:scope=>:user)
    end
    scenario 'Post/Edit Successful' do
          visit root_path
          click_button 'Post'
          fill_in 'Ranking title', with: 'It's a title'
          find('#ranking_ranking_posts_attributes_0_title').set('Article Title 3')
          find('#ranking_ranking_posts_attributes_1_title').set('Article Title 2')
          find('#ranking_ranking_posts_attributes_2_title').set('Article Title 1')
          all('#edit').first.set('hey')
          all('#edit')[1].set('hey')
          all('#edit')[2].set('hey')
          # When I click the post button, for some reason, the editing article that existed in the database disappears.
          click_button 'Post'
          expect(page).to have_content 'Title' #=> Error Occurred
    end
  end
end

Failure/Error: expect(page).to have_content 'This is the title'
       expected to find text"Title: "in" RankingHook 100P New Arrival Order Bootflat PORTFOLIO Web Design Branding & Identity Mobile Design Print User Interface ABOUT The Company History Vision GALLERY Flickr PICASA iStockPhoto PhotoDune CONTACT Basic Infrastructure.Flight. 2014" All Flights

def new
    @ranking=Ranking.new
    # Make this number the currentuser number
    @ranking.posts_sum.times{
      @ranking.ranking_posts.build
    }
    @ranking.user=current_user
    @ranking.save validate: false
    redirect_to edit_ranking_path@ranking
  end

default
  end

<%=form_for(@ranking)do|f|%>
        <div class="row category_select">
          <div class="field col-sm-12">
            <div class="col-sm-4">
              <%=f.label:category_id%>
              <br of >
              <%=f.collection_select(:category_id,@categories,:id,:name,{}, {class:'form-control'})%>
            </div>
          </div>
          <div class="clearfix"></div>
        </div>
        <div class="edit-rankingtop row">
          <div class="field col-sm-2col-xs-12">
            <strong id="top_image_label">top image</strong><br/>
            <%[email protected]%>
                <%[email protected], size: '65', id: 'top_image_thumb'%>
            <%end%>
            <div class="field">
              <%=f.file_field: image%>
              <br>
              <%=f.hidden_field: image_cache%>
            </div>
          </div>
          <div class="field col-sm-10 col-xs-12">
            <%=f.label: title%>
            <br>
            <%=f.text_area: title, class: 'form-control', placeholder: 'Stuff up to 150 characters' %>
          </div>
          <br of >

          <div class="field">
            <%=f.hidden_field:user_id, :value=>current_user.id%>
          </div>
          <div class="clearfix"></div>
        </div>
        <!--Notification Location for Auto-Draft Save -->
        <%[email protected]==true%>
            <div class="create-temp col-sm-12 col-xs-12">/div>
        <%end%>

        <br of >
        <%[email protected]_sum%>
        <div class="col-sm-10col-xs-12row">
          <div class="field col-sm-12">
            <%=f.fields_for —ranking_posts, @ranking.ranking_posts do | p | %>
                <br of >
                <h4>%=i%>Location</h4>

                <%=p.hidden_field:rank, :value=>i%>

                <div class="field">
                  <%=p.label: title%>
                  <%=p.text_field: title, class: 'form-control'%>
                </div>

                <div class="field">
                  <%=p.label:description%>
                  <%=p.text_area:description, class: 'form-control', id: 'edit'%>
                </div>

                <%i=i-1%>
            <%end%>
          </div>

          <div class="actions col-sm-6 col-xs-12">
            <%=f.submit 'post',:class=>'btn btn-success btn-block'%>
          </div>
    <%end%>

class Ranking <ActiveRecord::Base
  belongs_to —user
  belongs_to —category
  has_many:ranking_posts,dependent::destroy
  accepts_nested_attributes_for —ranking_posts
  mount_uploader: image, ImageUploader
  # order
  default_scope->{order('created_at DESC')}

  values:title, :presence=>true, length: {maximum:150}
  values:category_id,:presence=>true
  Please complete validates_associated:ranking_posts, message:'.'
end

class RankingPost<ActiveRecord::Base
  belongs_to —Ranking
  default_scope->{order('rank DESC')}
  values:title,:description,:rank, presence:true
end