i not able set form data into database in rails

hey i have project_site model where user uploads name file into database. and another model i have is project_manager which has accept and reject Boolean field and remark field along with each project_site entries. but i am unable to set remark and status boolean data into project_manager database. here is my code- project_manager.rb

class ProjectManager < ApplicationRecord
  belongs_to :project_site
end

project_site.rb

class ProjectSite < ApplicationRecord
  has_many :project_managers, dependent: :destroy
  validates :name,:attendance, presence: true
end

project_manager_dashboard

  <table>
    <thead>
      <tr>
        <th>Uploaded By</th>
        <th>Attendance File</th>
        <th colspan="2"></th>
      </tr>
    </thead>

    <tbody>
      <% @project_sites.each do |project_site| %>
        <tr>
            <td><%= project_site.name.titleize %></td>
            <% if project_site.attendance? %>
              <td><%= link_to "View Attendance", project_site.attendance.url, :class => "fi-page-export-csv" %></td>
            <% else %>
              <td>No File Present</td>
            <% end %>

            <td>
              <%= form_for [ @project_site, @project_manager ] do |f| %>
                <div class="row">
                  <div class="medium-6 columns">
                    <%= f.radio_button :status, true  %>
                    <%= f.label :approve %>
                    <%= f.radio_button :status, false  %>
                    <%= f.label :reject %>
                  </div>
                  <br>
                  <br>
                  <div class="medium-6 cloumns">
                    <%= f.label :remark %><br/>
                    <%= f.text_area :remark %>
                  </div>

                    </div>
                  <div>
                    <%= f.submit 'Submit', :class => 'button primary' %>
                  </div>

              <% end %>
            </td>
            <td><%= link_to 'Action', project_site, :class=>'button tiny primary' %></td>
        </tr>
      <% end %>
    </tbody>
  </table>

project_manager_controller.rb

class ProjectManagersController < ApplicationController

  def index
   @project_sites = ProjectSite.all.order("created_at DESC").paginate(page: params[:page], per_page: 10)
   @project_manager = ProjectManager.new
   #@project_manager.project_site_id = @project_site.id
  end


  def create
     @project_manager = ProjectManager.new(remark_params)
    @project_manager.project_site_id = params[:project_site_id]
    @project_manager.save

    redirect_to project_managers_path
  end

  def remark_params
    params.require(:project_manager).permit(:remark, :status)
  end
end

routes.rb

  resources :project_sites
  resources :project_managers