.html.erb file

 <% @sub_section = @section.sub_sections.where(name: "banner").take if @section %>

  <div id = "banner">
 <div class="header" id="banner_background" style="<%= background_color(@section, 'banner') if @section %>;">
 <% unless request.subdomain.present? %>
  <div class="pull-right" style="">
    <%if @sub_section.present? %>
      <span class="btn btn-default btn-file">
        Change Cover Image</i> <input type="file" name="coverImage" id="banner_image" class = "banner_image" data-section="banner" data-page="home" data-background="banner_background">
      </span>
      <span class="btn btn-default ">
        <a href="javascript:void(0)" id="dark-color" class = "text_desing_image" data-section="banner" data-page="home" data-color="rgb(255, 255, 255)" data-background="news_text" >Light Text </a>
      </span>
      <span class="btn btn-default ">
        <a href="javascript:void(0)" id="dark-color" class = "text_desing_image" data-section="banner" data-page="home" data-color="rgb(94, 97, 98)" data-background="news_text" >Dark Text </a>
      </span>
      <span class="btn btn-default"><a class="edit-text" style="background:none !important;color:#428bca">Edit Banner Text</a></span>
    <% end %>
     <span>
      <% if @sub_section %>
      <% if @sub_section.section_image.present? %>
        <%= edit_section_image_btn("banner_image0hsu0banner_background0hsu0#{@sub_section.id}", "#{request.protocol}#{request.host_with_port}#{@sub_section.section_image_url(:thumb)}", "banner_edit_btn", false ) %>
      <% elsif(!@sub_section.section_image.present?) %>
        <%= edit_section_image_btn("banner_image0hsu0banner_background0hsu0#{@sub_section.id}", "#{request.protocol}#{request.host_with_port}", "banner_edit_btn", true) %>
        <% end -%>
      <% end -%>
    </span>
  </div>
<% end %>
    <h3 class="heading text-center PadT2" >
      <mark class="mark section-title-font news_text" id="banner_text" style="<%= text_color(@section, 'banner') if @section %>">
         <% banner_text = "" %>
        <% if @sub_section && @sub_section.contents.present? %>
          <% banner_text = format_text(@sub_section.contents.try(:titleize).html_safe) %>
          <%= banner_text %>
        <% else %>
          <% banner_text = "" %>
          &nbsp;&nbsp;&nbsp;
        <% end %>
        <% unless request.subdomain.present? %>
          <% if @sub_section.present? %>
            
          <% end -%>
        <% end %>
      </mark>
      <div class="txtBox">
        <!-- <textarea rows="7" class="form-control"></textarea> -->
        <%= form_tag create_banner_text_website_path(@website), remote: true, method: :get do %>
          <%= cktext_area "banner", "content", :ckeditor => {:uiColor => "#999592"}, :value => banner_text, :required => :required %>
          <a class="btn btn-default close-box">Cancel</a>
          <%= submit_tag :Save , class:"btn btn-warning" %>
        <% end %>
      </div>
    </h3>

    <!-- <div class="col-md-6 center-block">
      <ul class="nav-btn">
        <li class="col-md-6"><a class="btn btn-default btn-orange">Volunteer Now</a></li>
        <li class="col-md-6"><a class="btn btn-default btn-blue">Donate</a></li>
      </ul>
    </div> -->

  </div>
</div>

controller code

class WebsitesController < BaseController
  layout :get_layout, except: [:saved_template]
  before_action :load_website
  before_action :show_page, only: [:index, :about, :our_work, :our_impact, :gallery, :get_involved, :find_us, :donate]

  def index;  end
  def about; end
  def our_work; end
  def our_impact; end
  def gallery; end
  def get_involved; end
  def find_us; end
  def donate; end

  def create
    redirect_to root_path
  end

  def save_font
    # to update template fonts only and avoid to run unpublished call back
    render json: { status: @website.update_columns(update_font_params) || @website.errors.full_messages  }
  end

  def saved_template
    current_ngo.websites.new(name: params[:template]).save
    redirect_to websites_path(template: params[:template]), notice: "Your layout successfully saved."
  end

  def upload_banner_image
    website = Website.find(params[:id])
    if website
      @sub_section = website.sections.find_by_name(params[:section]).sub_sections.where(name: params[:subsection]).take
      @sub_section.section_image = params[:banner_image]
      if @sub_section.save
        render json: {banner_image_url: s3_uploaded_url(@sub_section.section_image.current_path), success: true }
      else
        render json: {banner_image_url: nil, success: false }
      end
    end
  end

  def change_color_text
    website = Website.find(params[:id])
    if website
      @sub_section = website.sections.find_by_name(params[:section]).sub_sections.where(name: params[:subsection]).take
      @sub_section.text_color = params[:color]
      if @sub_section.save
        render json: {text_color:  @sub_section.text_color, success: true }
      else
        render json: {text_color: nil, success: false }
      end
    end
  end

  def create_banner_text
    website = Website.find(params[:id])
    if website
      @sub_section = website.sections.find_by_name("home").sub_sections.where(name: "banner").take
      @sub_section.contents = params[:banner]["content"]
      @sub_section.save
      render :layout => false
    end
  end

  def change_section_background
    website = Website.find(params[:id])
    if website
      @sub_section = website.sections.find_by_name(params[:page]).sub_sections.where(name: params[:type]).take
      @sub_section.contents = params[:color]
      @sub_section.remove_section_image!
      if @sub_section.save
        render :json => { success: true, type: params[:type], background_color: @sub_section.contents }
      else
        render :json => { success: false }
      end
    end
  end

#A method for updating the icons of subsections
  def change_subsection_icon
    website = Website.find(params[:id])
    if website
      @sub_section = website.sections.find_by_name(params[:page]).sub_sections.where(name: params[:type]).take
      @sub_section.contents = params[:color]
      @sub_section.remove_section_image!
      if @sub_section.save
        render :json => { success: true, type: params[:type], background_color: @sub_section.contents }
      else
        render :json => { success: false }
      end
    end
  end

  def edit_banner
    @website = Website.find(params[:id])
    @section = @website.sections.find_by_name("home")
  end

  def crop_image
    @section = Section.find(params[:id])
    @section.remote_section_image_url = params[:image_url]
    @section.save
    render :json => {image_url: s3_uploaded_url(@section.section_image.current_path(:thumb)) }
  end

  private

  def check_mysite
    redirect_to root_path unless current_ngo.mysite
  end

  def get_layout
    "#{@website.name}_layout"
  end

  def permit_section
    params.require(:section).permit(:crop_x, :crop_y, :crop_w, :crop_h)
  end

  def load_website
    @website ||= current_ngo.websites.where(name: params[:template]).first_or_initialize
    @section = @website.sections.find_by_name(page)
  end

  def show_page
    @site_data = ParseNgoData.new(session[:ngo_id], page).to_json
    # render json: @site_data
    # return
    render template: "#{@website.name}/#{page}"
  end

  def site_data_value
    @site_data
  end
  helper_method :site_data_value

  def page
    params[:action].eql?("index") ? 'home' : params[:action]
  end

  def update_font_params
    params.permit(:title_font, :sub_title_font, :text_font)
  end

end

error

Showing /home/ankit/copy/app/views/layouts/_template_1_index_banner.html.erb where line #48 raised:

No route matches {:action=>"create_banner_text", :controller=>"websites", :id=>nil} missing required keys: [:id]

routes.rb

NGOTemplate::Application.routes.draw do
  resources :abouticons, only: [:index, :new, :create, :destroy]

  mount Ckeditor::Engine => '/ckeditor'
  # The priority is based upon order of creation: first created -> highest priority.
  # See how all your routes lay out with "rake routes".

  concern :headers do
    get :about
    get :our_work
    get :our_impact
    get :gallery
    get :get_involved
    get :find_us
    get :donate
  end

  constraints(SubdomainBlank) do
    root :to => 'home#index'
    resources :websites, only: [:index, :create] do
      collection do
        delete :destroy_mysite
        get :publish_website
        get :saved_template
        concerns :headers
        put "/:template/save_font", to: "websites#save_font"
      end
      member do
        post :upload_banner_image
        get :create_banner_text
        get :change_section_background
        get :change_color_text
      end
    end
    resources :mysites do
      get :refresh_ngo, on: :collection
    end
  end

  # match 'mysites' => 'mysites#index', via: :get, :constraints => { :subdomain => /.+/ }
  constraints(SubdomainPresent) do
    match "/", to: 'published_sites#index', via: :get
    resources :published_sites do
      collection do
        concerns :headers
      end
    end
    # resources :websites, only: [:index, :create] do
    #   collection do
    #     delete :destroy_mysite
    #     get :publish_website
    #     get :saved_template
    #   end
    #   member do
    #     post :upload_banner_image
    #     get :create_banner_text
    #     get :change_section_background
    #   end
    # end
    # resources :mysites do
    #   post :upload_banner_image
    #   get :create_banner_text
    #   get :change_section_background
    #   get :edit_banner
    # end
  end
  get 'crop_image/:id' => "websites#crop_image"
  post "application/partners_status" => "application#partners_status"
  post "application/partners_update" => "application#partners_update"
  post "application/about_page_update" => "application#about_page_update"
  post "application/our_work_update" => "application#our_work_update"
  post "application/about_page_return" => "application#about_page_return"
  post "abouticons/destroy" => "abouticons#destroy"
  post "application/layout_update" => "application#layout_update"
  post "application/layout_hide" => "application#layout_hide"

end